how do substances change into different substances during chemical reactions
Answers
Answer:
Chemical reaction are irreversible. Some of the example of chemical reaction are cooking, rusting, and burning. During a chemical reaction, the composition of substances changes and the particles rearrange to form a new substance. The new substance formed after chemical reaction of substance has different physical and chemical properties.
When a chemical reaction occur, the atoms or molecules of the substances change its physical and chemical properties such as while cooking of vegetable, the molecules of vegetable undergo changes in their properties and form a new substance which is different from the earlier.
Related Questions
Selecting reource with reliable credential and expertie i?
A. Not important, everyone’ idea are equally valid
B. Only important when you are looking for medical advice
C. Important for cientific reearch only
D. Important for any information you look up,, on any topic
Answers
Selecting resources with reliable credentials and expertise is important for any information we look up, on any topic.
The resources can be studied as reliable and credentials if they include the information that arises from an authentic source. And also, the resource that has been verified by many reviewers that exhibit special knowledge and expertise in the linked field of the topic can be contemplated as reliable and credential. That kind of resource can be looked upon for retrieving needed information on any topic.
It is important to evaluate our sources. When we do research, surely, we want to find the best information to support our ideas. This needs careful evaluation of the information we collect.
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What are the 3 types of zeros?
Answers
Captive zeros
Trailing zeros
Which of these are examples of negative tropism? (Select all that apply.)
a plant’s roots growing down into the soil due to gravitropism
a plant’s stem growing upward out of the ground due to gravitropism
a plant’s leaves growing toward the direction of the sun due to phototropism
a plant’s roots growing toward a water source due to hydrotropism
a plant’s leaves growing away from the sunlight due to phototropism
a plant’s roots growing away from a water source due to hydrotropism
Answers
Answer:a plant’s stem growing upward out of the ground due to gravitropism
a plant’s leaves growing away from the sunlight due to phototropism
a plant’s roots growing away from a water source due to hydrotropism
Explanation:
a btu is defined as the amount of energy required to raise the temperature of one lb of water by one degree celsius t or f
Answers
British thermal units (Btu) are a unit used to measure the amount of heat in fuels or other energy sources.
The amount of heat needed to raise a pound of liquid water's temperature by one degree Fahrenheit at the point where water has its highest density (approximately 39 degrees Fahrenheit).
Temperature is a physical parameter that, with the aid of a certain scale, indicates the kinetic energy and amount of energy transfer from an object or an entity to its environment (surrounding). Different temperature sensors, such as thermocouples, thermistors, and digital temperature sensors, can be used to control or maintain the temperature.
A unit of measurement that shows the amount of energy or heat required to raise the temperature associated with an object's hotness.
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The pressure of a gas is 780 torr when its volume is 400. mL and the temperature is 20.0°C. If the gas is allowed to expand to 500. mL at 25.0°C, what will the pressure be?
Answers
As volume increases, pressure decreases. This can be deduced from the equation above: P1V1 equals P2V2 and so on. P2 = (780 torr)(400 mL) (500 mL) P2 = 780 torr x 400/500 mL/ 624 torr pressure.
What will the gas's pressure be?As a result, the gas pressure that a gas experiences is equal to the product of the forces the gas molecules exert on the walls of the its container divided by the entire surface area of a container walls.
Why is there pressure in petrol?The force created when gas molecules slam into surfaces of objects produces gas pressure (Figure 1). Even though there is very little force involved in each collision, any surface with a sizeable area is subject to many of them quickly, which can lead to a high pressure.
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If you leave your home at noon, and the speed limit is 50 km/h on the highway, what is the approximate time will you get to Atlantic City if Atlantic City is 150 km away? (obeying the speed limit of course)
Answers
Answer:
The time you will get to Atlantic City is 3 pm
Explanation:
Given;
speed limit, v = 50 km/h
distance to be traveled, d = 150km
The time of the motion is given as;
time = distance / speed
t = (150 km) / (50 km/h)
t = 3 hours
Thus, if you leave your home at noon, the time you will get to Atlantic City is given as;
time to get home = 12 pm + 3hours = 3 pm
Therefore, the time you will get to Atlantic City is 3 pm
5.13 Lab Report Online Form ES A
PLEASE HELP I NEED IT NOW
I WILL GIVE YOU 10 POINTS!
Answers
A sample lab report form based on the given parameters is given below:
The Lab ReportTitle: Investigating the Efficiency of Solar Panels in a Residential Setting
Introduction:
The purpose of this experiment was to investigate the efficiency of solar panels in a residential setting. The primary focus was on analyzing the output power of the solar panels under various conditions, such as the angle of incidence of sunlight and the distance from the light source.
Problem and Constraints:
The main problem was to ensure that the experiment was conducted in a controlled environment to obtain accurate results. Other constraints included the availability of equipment and weather conditions.
Plan and Design:
To conduct this experiment, a small-scale solar panel was set up in a controlled environment. The experiment involved measuring the output power of the solar panel under different conditions, including the angle of incidence of sunlight and the distance from the light source. The data collected was analyzed using statistical methods.
Procedure:
The solar panel was placed in a location where it would receive sunlight throughout the day. The angle of incidence was varied using an adjustable stand. The distance from the light source was also varied by moving the solar panel closer or farther from the light source. The output power of the solar panel was recorded at each variation of the angle of incidence and distance.
Evaluation and Revision:
The results showed that the efficiency of the solar panel decreased as the angle of incidence of sunlight increased. Similarly, as the distance from the light source increased, the efficiency of the solar panel decreased. Based on these results, we revised our experiment by adjusting the position of the solar panel to optimize its output power.
Conclusion:
In conclusion, the experiment successfully investigated the efficiency of solar panels in a residential setting. The results showed that the angle of incidence of sunlight and the distance from the light source significantly affect the efficiency of the solar panel. Further studies could be conducted to investigate the efficiency of solar panels under various weather conditions.
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A student is working with four different solid substances: sodium (Na), calcium (Ca), copper (Cu), and iodine (I). Which substance is most likely to break easily into many smaller pieces?
Answers
Answer: iodine
Explanation: Its right trust me I took quiz.
The substance that is most likely to break easily into many smaller pieces is iodine.
Metals are found around the left hand side of the periodic table while nonmetals are found around the right hand side of the periodic table.
Metals are strong and not brittle. They do not break easily like the nonmetals do. Since iodine is a nonmetal, it is brittle. It breaks easily into smaller pieces unlike the metals; sodium, calcium and copper.
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The following galvanic cell has a potential of 1.214 V at 25∘C:
Hg(l)|Hg2Br2(s)|Br−(0.10M)||MnO4−(0.10M),Mn2+(0.10M),H+(0.10M)|Pt(s)
Calculate the value of Ksp for Hg2Br2 at 25∘C.
Express your answer using one significant figure.
Answers
The value of Ksp for Hg2Br2 at 25∘C is 1.0 × 10^-12.
The given galvanic cell involves the reaction between Hg(l), Hg2Br2(s), Br−(0.10M), MnO4−(0.10M), Mn2+(0.10M), H+(0.10M), and Pt(s). The potential of the cell is given as 1.214 V at 25∘C.
To calculate the value of Ksp for Hg2Br2 at 25∘C, we can use the Nernst equation:
Ecell = E°cell - (0.0592/n) * log(Q)
Where Ecell is the cell potential, E°cell is the standard cell potential, n is the number of electrons transferred, and Q is the reaction quotient.
Since Hg2Br2 is a solid and its concentration does not appear in the reaction quotient, we can assume its activity is 1. Therefore, the reaction quotient simplifies to the concentrations of the other species involved in the cell:
Q = [Br−] / [MnO4−][Mn2+][H+]
By substituting the given concentrations and the calculated cell potential into the Nernst equation, we can solve for E°cell. Then, using the Nernst equation at equilibrium (Q = Ksp), we can solve for Ksp. In this case, the value of Ksp for Hg2Br2 at 25∘C is found to be 1.0 × 10^-12, rounded to one significant figure.
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Pls help
Protons: 4
Neutrons: 4
Electrons: 3
What element is it ?
Boron
Aluminum
Beryllium
Carbon
Answers
Answer:
The answer would be beryllium
You were probably confused but the correct answer would actually be a beryllium ion.
for the following reaction, to get the rate of consumption of o2, what must we multiply the rate of consumption of nh3 by? 4nh3 5o2→4no 6h2o
Answers
To get the rate of consumption of O2, we must multiply the rate of consumption of NH3 by 5.
The reaction rate is the speed at which a chemical reaction occurs. It is determined by the time taken for the concentration of reactants to decrease or the concentration of the products to increase. The rate of reaction is expressed as the change in concentration of reactants or products per unit of time. To get the rate of consumption of O2, we must multiply the rate of consumption of NH3 by 5.
The reaction rate is a critical component of any chemical reaction. It influences the amount of product created, the speed at which the reaction occurs, and the energy required to create the reaction. A chemical reaction's rate determines the quantity of product generated and the energy required to generate that product.
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Part D
In part D of task 1, you identified at least two ways in which the reaction of nitrogen
and hydrogen could be changed to alter the equilibrium. Use the simulation to test
those changes. Describe how you used the simulation to model the changes and the
results they produced. Use these methods if you find them helpful:
• Look at the pie graph to see how the system changes.
• Use the Temperature slider at the bottom to cool or heat the mixture.
Click the pause button on the simulation to observe the number of particles at
any point of time.
Answers
I used the simulation to model the changes by adjusting the Temperature slider at the bottom. As I increased the temperature, the equilibrium shifted towards the products side.
What is the temperature?The temperature is a measure of how hot or cold something is. It is measured using a thermometer and can be expressed in Celsius, Fahrenheit, or Kelvin. Temperature can be affected by many factors, including air pressure, humidity, wind, and the time of day.
I also observed the pie graph to see how the system changed. As the temperature increased, the number of molecules for both nitrogen and hydrogen decreased, while the number of molecules for ammonia increased. I also used the pause button on the simulation to observe the number of particles at any point of time. This allowed me to see how the reaction was progressing and how the equilibrium shifted as the temperature increased.
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When the ____________ group of fatty acids reacts in a dehydration synthesis reaction with the ____________ group of glycerol, fats or oils are formed.
Answers
When the carboxyl group of fatty acids reacts in a dehydration synthesis reaction with the hydroxide group of glycerol, fats, or oils are formed.
Fats and oils are made up of fatty acids and glycerol.
A fatty acid has a carboxyl group attached to a long chain of carbon atoms.
Based on the presence or absence of double bonds, fatty acids are of two types, saturated (without double bond) or unsaturated (with one or more C=C double bonds), as shown in the adjoining diagram.
Glycerol is chemically trihydroxy propane. It has three hydroxyl groups.
When the carboxylic group of fatty reacts in a dehydration synthesis reaction with the hydroxyl group of glycerol, fats or oils are formed. When these groups react, an ester bond is formed.
This reaction is illustrated in the adjoining diagram.
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How many atoms are represented by the formula CaF2
Answers
Answer:
3 atoms
Explanation:
There is 1 atom in Ca and 2 atoms in F (from F2) giving a total of 3 atoms
A tank initially contains 60 gal of pure water. Brine containing 1lb of salt per gallon enters the tank at 2gal/min, and the (perfectly mixed) solution leaves the tank at 3gal/min; thus the tank is empty after exactly 1 hour. Let y(t) be the amount of salt in the tank after t minutes. (a) Write an Initial Value Problem for the amount of salt in the tank at any time t<60). (b) Solve the IVP in part (a) to find the amount of salt in the tank at any time t<60). (c) Determine the amount of salt when the tank is half empty.
Answers
(a) Writing an Initial Value Problem for the amount of salt in the tank at any time t<60)Initial Value Problem (IVP) is a differential equation accompanied by initial conditions. The differential equation we will use is:
y′(t) = 2(1 − y(t)/V) − 3y(t)/Vwhere V is the volume of the tank and y(t) is the amount of salt in the tank at time t. The initial condition will be y(0) = 0(b) Solving the IVP in part (a) to find the amount of salt in the tank at any time t<60)To solve this differential equation, we can use the integrating factor method. The integrating factor is:
IF = e^(3t/V)Multiplying both sides by the integrating factor, we get:e^(3t/V) y′(t) + 3/V e^(3t/V) y(t) = 2e^(3t/V) − 2y(t)/V(e^(3t/V) y(t))′ = 2e^(3t/V)We integrate both sides with respect to t:(e^(3t/V) y(t)) = (2/3) e^(3t/V) + Cwhere C is the constant of integration. Using the initial condition, we find that:C = (2/3) e^0 = 2/3Therefore, the solution is:e^(3t/V) y(t) = (2/3) e^(3t/V) + (2/3)e^0y(t) = (2/3) + (2/3)e^(-3t/V)(c) Determining the amount of salt when the tank is half emptyThe tank is half empty when there is 30 gallons of solution in it. Since the tank is emptied in one hour, this happens when there is 30 gallons of brine in the tank. Therefore, the amount of salt in the tank when it is half empty is:y(60) = (2/3) + (2/3)e^(-3 × 60/V)We need to find V to solve for y(60). We know that the tank starts with 60 gallons of water, and 1 gallon of brine enters every minute and 3 gallons of solution leave every minute. Therefore, the volume of the tank is:
V = 60 + (1 − 3) t = 60 − 2tWhen t = 60, V = 60 − 2 × 60 = −60Therefore, the tank does not have a volume of −60. Instead, the problem has an error.About SaltSalt is a collection of chemical compounds with the main component Sodium Chloride (NaCL) being the same as table salt. The process of making salt in Indonesia is generally by evaporating seawater using sunlight or other heat sources. Salt is made by collecting seawater and then evaporating it with sunlight so that only the salt crystals remain. Traditional salt making is by channeling seawater into ponds with the help of windmills.Apart from being a natural preservative, salt also has many other benefits. As for some of the benefits of salt for the body is to help the digestive system. Salt is believed to help the digestive system because salt can stimulate the digestive enzymes chloride and protein which help digestion.
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Give one safety precaution should take during carbon and lead oxide experiment
Answers
Answer:
use safety goggles
Explanation:
plz give me brainleist
Explanation:
Which option describes energy being released as heat?
A.Lions sleeping after a big meal
B.A baby bird eating a worm
C.A child shivering in the cold
D.A surfer on a surfboard
Answers
Answer: C. A child shivering in the cold
Explanation:
Did the test. :)
In the Millikan oil droplet experiment, the oil is sprayed from an atomizer into a chamber. The droplets are allowed to pass through the hole into the chamber so that their fall can be observed. The top and bottom of the chamber consist of electrically charged plates. The upper plate is positively charged, and the lower plate is negatively charged. X rays are introduced into the chamber so that when they strike the oil droplets, the droplets will acquire one or more negative charges. The electric field (voltage) is applied to the metal plates.
Watch the animation and identify the effects of an electric field on the motion of a negatively charged oil droplet. Consider the gravitational force as Fg and the electric force as Fe. All the other forces acting on the oil droplet can be ignored as their effect on the motion of the oil droplet is negligible.
A/ In the absence of an electric field, the oil droplet falls freely due to the gravitational force.
B/ If Fe is increased until it is equal to Fg, the negatively charged oil droplet will remain stationary.
C/ If Fe is greater than Fg, the negatively charged oil droplet will move freely toward the negatively charged plate.
D/ In the presence of an electric field, the negatively charged oil droplet moves freely toward the negatively charged plate.
** I chose B, but that was the wrong answer
Answers
C/ If Fe is greater than Fg, the negatively charged oil droplet will move freely toward the negatively charged plate.
In the Millikan oil droplet experiment, the negatively charged oil droplets are subjected to an electric field created by the charged plates. The electric force (Fe) acts on the oil droplet in a direction opposite to the gravitational force (Fg). When Fe is greater than Fg, the electric force overcomes the gravitational force, causing the negatively charged oil droplet to experience an upward force. As a result, the oil droplet moves freely upward toward the negatively charged plate.
Option B is incorrect because if Fe is equal to Fg, the forces balance each other, resulting in a stationary droplet. However, the question states that Fe is increased until it is greater than Fg, implying that the droplet is no longer stationary but moves in response to the electric force.
Therefore, option C is the correct answer, as it describes the effect of an electric field on the motion of a negatively charged oil droplet in the Millikan oil droplet experiment.
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1. The maximum amount of one substance that can dissolve in another substance is referred to as its ______________.
Answers
The maximum amount of one substance that can dissolve in another substance is referred to as its solubility.
Solubility is a physical property that describes the ability of a substance (the solute) to dissolve in another substance (the solvent) to form a homogeneous mixture. The amount of solute that can dissolve in a given amount of solvent at a specific temperature and pressure is determined by the solubility of the solute in the solvent. The solubility of a substance is influenced by several factors, including temperature, pressure, and the chemical nature of the solute and solvent. The solubility of a substance can also be affected by the presence of other solutes in the solvent, as well as by the pH and ionic strength of the solution.
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Which star has the highest surface temperature
A. blue star
B. yellow star
C. white star
D. red star
Answers
Answer:
The blue star is the hottest star.
Explanation:
Red stars are cooler than the sun, with surface temperatures of 3,500 K for a bright red star and 2,500 K for a dark red star. The hottest stars are blue, with their surface temperatures falling anywhere between 10,000 K and 50,000 K
HELPPPPPP PLEASE
1. How many elements are in the formula?
2. How many atoms are in the formula?
3. How many compounds are in the formula?
4. How many oxygen atoms are in the formula?
5. What do coefficients tell you about a chemical formula? to show the
relative amounts of each substance present.
6. What do subscripts tell you about a chemical formula? the number of
atoms of the element immediately before the subscript.
7. Draw a picture of the formula.
Answers
Answer:
There are 3 elements, Sodium, Carbon, and oxygen. There are 2 Sodium atoms 2*2=4, one carbon, and 3 Oxygen so 4+1+3=8 total atoms. one compound CO3
Explanation:
that's all I know
1. what property of gas does not change?
2. Name two gases besides oxygen found in Earth's atmosphere
Answers
Answer:
hydrogen and nitrogen or something?
Explanation:
Answer:
nitrogin and i forgot the other one srry!!
Explanation:
Can solid FeBrą react with Cl, gas to produce solid FeCl, and Br2 gas? Why or why not? A. Yes, because Cl2 has lower activity than Br2 B. No, because Cl, has lower activity than Bra C. No, because Cl, and Br, have the same activity D. Yes, because Cl2 has higher activity than Br2
Answers
Answer:The reaction can occur since Cl2 gas has a higher activity than Br2 gas. Therefore, solid FeBr2 can react with Cl2 gas to produce solid FeCl2 and Br2 gas. The reaction can be represented as follows:
FeBr2 (s) + Cl2 (g) -> FeCl2 (s) + Br2 (g)
Thus, the correct answer is D: Yes, because Cl2 has higher activity than Br2.
Explanation:
Which file type should be used if the highest priority is ensuring that a text and image file stays intact?
A. GIF
B. SVG
C. BMP
D. JPG
I need the right answer
Answers
Answer:
JPG
Explanation:
Answer:
I believe JPG would be the correct file.
Explanation:
A 134.0 g sample of an unknown metal is heated to 91.0⁰C and then placed in 125 g (125 mL) of water at 25.0⁰C. The final temperature of the water is measured at 31.0⁰C. Calculate the specific heat capacity of the unknown metal.
Answers
Answer:
The specific heat capacity of the metal is approximately 0.3903 J/(g·°C)
Explanation:
The mass of the sample of the unknown metal, \(m_m\) = 134.0 g
The temperature to which the metal is raised, \(t_m\) = 91.0°C
The mass of water into which the mass of metal is placed, \(m_w\) = 125 g
The temperature of the water into which the metal is placed, \(t_w\)= 25.0°C
The final temperature of the water, \(t_f\) = 31.0°C
The specific heat capacity of water, \(c_w\) = 4.184 J/(g·°C)
The specific heat capacity of the metal = \(c_m\)
Therefore, by the first laws of thermodynamics we have;
The heat transferred = Heat supplied by the metal = Heat gained by the water
The heat transferred, ΔQ, is given as follows;
ΔQ = \(m_w\)×\(c_w\)×(\(t_f\) - \(t_w\)) = \(m_m\)× \(c_m\)×(\(t_m\) - \(t_f\))
125 × 4.184 × (31 - 25) = 134 × \(c_m\) × (91 - 31)
∴ \(c_m\) = (125 × 4.184 × (31 - 25))/(134 × (91 - 31)) ≈ 0.3903 J/(g·°C)
The specific heat capacity of the metal = \(c_m\) ≈ 0.3903 J/(g·°C)
What process results in a new substance being formed?
Chemical reaction
Physical change
Mixing
Answers
Answer:
Chemical reaction
Explanation:
Using the data for one of your trials, calculate the molarity of the HCl solution (see equation 8; themolar mass of Na2CO3 is 105.99 g/mol).
Answers
The molarity of the HCl solution in the chemical equation given : Na2CO3 + 2HCl → 2NaCl + H2O + CO2 is 1.66 M.
Molarity is defined as the number of moles of solute present per liter of solution. It is denoted by M. In order to calculate the molarity of HCl solution, we can use the equation of molarity i.e.
Molarity = moles of solute / volume of solution in liters.
We are given with the balanced chemical equation of Na2CO3 and HCl i.e. Na2CO3 + 2HCl → 2NaCl + H2O + CO2. From this equation, we know that 1 mole of Na2CO3 reacts with 2 moles of HCl. It means that 2*0.0207 mol of HCl will be reacted with 0.0207 moles of Na2CO3. Hence, moles of HCl = 2*0.0207 mol = 0.0414 mol.
Using the given volume of HCl solution used in the experiment i.e. 25.0 mL = 0.0250 L and the given concentration of HCl solution i.e. 0.100 M, we can calculate the molarity of HCl solution as follows:
Molarity = moles of solute / volume of solution in liters= 0.0414 mol / 0.0250 L= 1.66 M
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Determine the primary means of melting that would occur at divergent boundaries, convergent boundaries, and within a plate (intraplate). drag the appropriate labels to their respective targets.
Answers
By determining the primary means of melting that would occur at divergent boundaries and the appropriate labels to the respective Convergent plate boundary.
What is the Convergent plate boundary?
As the plate delves deeper into the convergent boundary, pressure and temperature rise along with it. When the pore water is released, this contributes to partial melting.
As a result, when the situation is at the melting curve, a rise in temperature will result in a large partial melt because of the presence of water. As seen in the wet peridotite melting curves in the aforementioned curves.
Only the peridotite's temperature changes during intraplate melting, not the pressure. Therefore, as the temperature rises, it will begin to melt.
Decompression causes melting at diverging boundaries. Temperature plays no part in this. As the plate delves deeper into the convergent boundary, pressure and temperature rise along with it.
When the pore water is released, this contributes to partial melting. As a result, when the situation is at the melting curve, a rise in temperature will result in a large partial melt because of the presence of water. As seen in the wet peridotite melting curves in the aforementioned curves.
Only the peridotite's temperature changes during intraplate melting, not the pressure. Therefore, as the temperature rises, it will begin to melt Decompression causes melting at diverging boundaries. Temperature plays no part in this.
Hence, the answer is Convergent plate boundary
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What controls the volumes of water in each cylinder once equilibrium is established?
Answers
Equilibrium is a state of balance or a stable situation where the opposing forces cancel each other out and where no changes are occurring.
How to explain the equilibrium?Your information is incomplete. Therefore, an overview will be given. In a chemical reaction, chemical equilibrium is a state where the reactants and products are present in concentrations that have no further tendency to change with time.
In terms of volume changes within a system at equilibrium, the following applies:
When there is a decrease in volume, then the equilibrium will shift to favor the direction that produces fewer moles of gas.When there is an increase in volume, then the equilibrium will shift to favor the direction that produces more moles of gas.In conclusion, if you increase the pressure of a system at equilibrium, the stress will be reduced by reaction that favors the side with the fewest moles of gas.
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when the liquids wax cools it hardens how is wax Harding similar to liquids water turning to ice?