During nuclear fission and fusion, matter that seems to disappear is actually converted intoa. massb. energyc. volumed. nuclei
Answers
Answer: B. Energy
Explanation: The matter is converted into energy, which is released in the form of radiation, this is due to the fact that the mass of the products of the reaction is less than the mass of the reactants, and this difference in mass is converted into energy. Aka (\(E=mc^{2}\)).
Related Questions
if the Kaka of a monoprotic weak acid is 7.3×10−6,7.3×10−6, what is the phph of a 0.23 m0.23 m solution of this acid?
Answers
The pH of a 0.23 M solution of the given monoprotic weak acid is approximately 1.42.
To determine the pH of a 0.23 M solution of a monoprotic weak acid with a Ka value of 7.3×10^(-6), we can use the Henderson-Hasselbalch equation:
pH = -log10(sqrt(Ka * C))
where Ka is the acid dissociation constant and C is the concentration of the acid.
Substituting the given values into the equation:
pH = -log10(sqrt(7.3×10^(-6) * 0.23))
Calculating the expression within the square root:
sqrt(7.3×10^(-6) * 0.23) ≈ 1.442×10^(-3)
Taking the square root:
sqrt(1.442×10^(-3)) ≈ 0.038
Substituting this value into the Henderson-Hasselbalch equation:
pH = -log10(0.038)
Calculating the logarithm:
pH ≈ 1.42
Therefore, the pH of a 0.23 M solution of the given monoprotic weak acid is approximately 1.42.
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A plane flies from NY to LA at a constant speed of 800 km/hr. How long will it take the plane to fly the 4200 km? 5
Answers
As the plane plane flies at a constant speed of 800 km/hr the plane will take 5 hours 25 minutes to fly distance of 4200 km.
What is speed?Speed is defined as the rate of change of distance with time. It has the dimension of distance by time. Thus, the SI unit of speed is given as the combination of the basic unit of distance and the basic unit of Time. Thus, the SI unit of speed is metre per second. In everyday life, kilometre per hour or in countries like US and UK miles per hour are used as the unit of speed.
The SI unit of speed can be derived from the formula of velocity. Basically, velocity is the vector equivalent of speed. Mathematically, velocity is given as the ratio of displacement to the time taken.So, 800 km is traveled in 1 hour so 4200 km will be traveled 4200/800=5.25 which is 5 hours and 25 minutes.
Thus, the plane will take 5 hours 25 minutes to fly distance of 4200 km.
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introduction to scientific investigation (kaylangan ko na po yung answer)
Answers
Answer:
1) A
2) P
3) B
4) M
5) I
6) C
7) H
8) J
9) F
10) L
11) N
12) G
13) O
14) K
15) D
Here ya go friend, these should be correct, for the most part.
An object has a mass of 10 kg. when a net force of 40 n north acts on the object, what is it’s acceleration ?
Answers
Answer:
4m/s² north.
Explanation:
Data obtained from the question include the following:
Mass (m) = 10Kg
Force (F) = 40N North.
Acceleration (a) =...?
Force is simply the product of mass and acceleration. It is represented mathematically as:
Force (F) = Mass (m) x acceleration (a)
F = ma
With the above formula, we can obtain the acceleration of the object as follow:
40 = 10 x a
Divide both side by 10
a = 40/10
a = 4m/s²
Since the force was applied in the north direction, the object will also accelerate in the north direction. Therefore, the acceleration of the object is 4m/s² north.
An electron cannot have the quantum numbers n = ________, l = ________, ml = ________.
A) 2, 0, 0
B) 2, 1, -1
C) 3, 1, -1
D) 1, 1, 1
E) 3, 2, 1
Answers
An electron cannot have the quantum numbers n = 1, l = 1, and ml = 1. Therefore, option (D) is correct.
What are the quantum numbers?The set of numbers that can describe the position and energy of a particular electron are known as quantum numbers. Four quantum numbers are principal quantum numbers, azimuthal, magnetic, and spin quantum numbers.
Principal quantum numbers (n) can designate the principal electron shell and the most probable distance between electrons and the nucleus. The azimuthal quantum number (l) can designate the shape of an orbital and has a value equal to n -1.
The magnetic quantum number can designate the total number of orbitals in a particular subshell and the orientation of orbitals. It has value -l to l.
Therefore, n = 1 then l = 0, and ml = 0 as well.
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what is the term for a liquid that combines with a pigment to make paint?
Answers
The term for a liquid that combines with a pigment to make paint is the vehicle oil or the water.
The liquid that combines with a pigment to make paint is the vehicle oil or water. The liquid is the substance which is used to bind the particles of the pigment together is called as the Binder. The color of the oil paint is derived from the small particles of the colored pigments that is mixed with the oil.
Paint has the component called as the binder, that is a liquid which is responsible for the holding the pigment particles together and will allowing the paint to be applied to the surface.
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Can someone please try and help me with this? I'll give brainliest if I can
Answers
Answer:
boom Corvette Corvette pop in the popular vet like that like that why you walk like that why you talk like that like I said boom boom boom I'm in the cold Mira, she needs to be back I remember seeing everyone Nee u i
Balance chemical equation Calcium hydroxide + carbon dioxide = calcium carbonate + water
Answers
Answer:
yaeh
Explanation:
a)Ca(OH)
2
+CO
2
⟶CaCO
3
+H
2
O
No. of atoms:Ca−1;O−4;H−2;C−1
b)Zn+AgNO
3
⟶ZnNO
3
+Ag
No. of atoms:Zn−1;Ag−1;N−1;O−3.
how many ml of 0.245 m naoh are needed to deliver 1.75 moles of naoh?
Answers
7140 ml of the 0.245 M NaOH solution are needed to deliver 1.75 moles of NaOH
To determine how many milliliters (ml) of a 0.245 M NaOH solution are needed to deliver 1.75 moles of NaOH, we can use the equation:
moles = molarity * volume
Rearranging the equation, we have:
volume = moles / molarity
Substituting the given values:
moles = 1.75 mol
molarity = 0.245 M
volume = 1.75 mol / 0.245 M
volume = 7.14 L
However, the given volume is in liters, but we need to convert it to milliliters. Since 1 liter is equal to 1000 milliliters, we can multiply the volume by 1000:
volume = 7.14 L * 1000 ml/L
volume = 7140 ml
Therefore, 7140 ml of the 0.245 M NaOH solution are needed to deliver 1.75 moles of NaOH.
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What are the criteria of high-quality scientific research?
Provide at least three examples and explain them in detail.
Answers
High-quality scientific research is characterized by several key criteria. Three examples of such criteria include: rigorous experimental design and methodology, reliable data analysis and interpretation, and clear and transparent reporting of results.
These criteria ensure that research is conducted in a systematic and reliable manner, leading to trustworthy and valid findings.
Rigorous Experimental Design and Methodology: High-quality scientific research requires a well-designed experimental approach. This involves careful planning, proper control groups, randomization, and replication. A rigorous methodology ensures that experiments are conducted under controlled conditions, minimizing bias and confounding variables, and allowing for accurate and reliable data collection.
Reliable Data Analysis and Interpretation: After data collection, high-quality research involves thorough and appropriate analysis of the data. This includes using appropriate statistical methods to evaluate the significance of the results and drawing valid conclusions. Proper data analysis helps researchers identify patterns, trends, and relationships, supporting or refuting their hypotheses in an objective and reliable manner.
Clear and Transparent Reporting of Results: High-quality research demands transparent reporting of the methods, procedures, and findings. This includes providing detailed descriptions of the experimental setup, data collection processes, and statistical analyses used. Clear reporting allows other researchers to replicate the study and verify its results. Additionally, complete reporting ensures that readers can understand the research methodology and draw their own conclusions based on the evidence presented.
By adhering to these criteria, high-quality scientific research maintains integrity, credibility, and reproducibility. It fosters trust among the scientific community and facilitates the advancement of knowledge by building upon reliable foundations.
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3 AgNO3 + K3PO4 - Ag3PO4 + 3 KNO3
What is the reaction
Answers
Answer:
its a Double Displacement (Metathesis) reaction
the balanced equation is 3AgNO3 + K3PO4 → Ag3PO4 + 3KNO3
Explanation:
An example of a solution is vinegar because it has 5% acid and 95% water True orFalse
Answers
Answer:
The answer is true!
Explanation:
Do you think we can use flame tests to identify unknown metals in a mixture?
Answers
Flame tests are used to identify the presence of a relatively small number of metal ions in a compound. Not all metal ions give flame colors. For Group 1 compounds, flame tests are usually by far the easiest way of identifying which metal you have got.
Methanol + oxygen -> carbon dioxide + water
If I have 25g of methanol, how many grams of water are produced?
How many moles of oxygen are needed to react with an excess of methanol to produce 150.0 grams
H2O?
If there is 5g of methanol and 5g of oxygen gas, which is the limiting reactant?
Answers
The amount of water produced would be 28.8 grams.
The moles of oxygen needed would be 6.24 moles.
The limiting reactant would be O2.
Stoichiometric problemsThe balanced equation for the reaction is:
2 CH3OH + 3 O2 → 2 CO2 + 4 H2O
Molar mass of CH3OH = 12.01 + 3(1.01) + 16.00 = 32.04 g/mol
Number of moles of CH3OH = 25 g / 32.04 g/mol = 0.780 mol
From the balanced equation, we know that 2 moles of CH3OH produce 4 moles of H2O, so:
0.780 mol CH3OH × (4 mol H2O / 2 mol CH3OH) × (18.015 g/mol H2O) = 28.8 g H2O
Therefore, 28.8 grams of water are produced when 25g of methanol is used.We need to first find the number of moles of H2O produced:
Molar mass of H2O = 2(1.01) + 16.00 = 18.02 g/mol
Number of moles of H2O = 150.0 g / 18.02 g/mol = 8.32 mol
From the balanced equation, we know that 2 moles of CH3OH react with 3 moles of O2 to produce 4 moles of H2O. Therefore:
8.32 mol H2O × (2 mol CH3OH / 4 mol H2O) × (3 mol O2 / 2 mol CH3OH) = 6.24 mol O2
So, 6.24 moles of O2 are needed to produce 150.0 grams of H2O.To determine the limiting reactant, we need to compare the amount of product that can be produced from each reactant. Let's first find the number of moles of each reactant:
Molar mass of CH3OH = 12.01 + 3(1.01) + 16.00 = 32.04 g/mol
Number of moles of CH3OH = 5 g / 32.04 g/mol = 0.156 mol
Molar mass of O2 = 2(16.00) = 32.00 g/mol
Number of moles of O2 = 5 g / 32.00 g/mol = 0.156 mol
From the balanced equation, we know that 2 moles of CH3OH react with 3 moles of O2 to produce 4 moles of H2O. The ratio of moles of CH3OH to O2 needed is therefore:
2 mol CH3OH / 3 mol O2 = 0.67 mol CH3OH/mol O2
Since the actual ratio of moles of CH3OH to O2 is 1 mol CH3OH/mol O2, we have excess O2. Therefore, O2 is the limiting reactant.
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Ten kilograms of -10C ice is added to 100kg of 20C water. What is the eventual temperature, in C, of the water. Assume an insulated container
Answers
The eventual temperature of the water will be approximately 15.44°C.
When ten kilograms of -10C ice is added to 100kg of 20C water in an insulated container, the ice will start to melt and absorb heat from the water. This process will continue until all the ice has melted and reached the same temperature as the water, which is 20C.
During the melting process, the ice absorbs a specific amount of heat known as the latent heat of fusion, which is the amount of heat required to change the phase of a substance from solid to liquid. This means that the water will lose heat as it melts the ice, which will slow down the rate at which the water temperature rises.
To calculate the eventual temperature of the water, we need to use the specific heat capacity of water, which is 4.184 Joules per gram per degree Celsius. Using this value and the mass and temperature of the water and ice, we can calculate the total amount of heat energy in the system and then divide it by the total mass to get the final temperature.
Assuming that the specific heat capacity of ice is 2.108 Joules per gram per degree Celsius, the calculation will be:
Q = (100kg x 4.184 J/g°C x (20°C - T) + 10kg x 2.108 J/g°C x (T + 10°C))
Where Q is the total heat energy in the system and T is the final temperature of the water.
Solving for T, we get:
T = 15.44°C
Therefore, the eventual temperature of the water in the insulated container will be approximately 15.44C after all the ice has melted.
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suppose you want to produce 2.00 moles of co2 using the equation below what mass of sodium bicarbonate should you use?
Answers
The mass of sodium bicarbonate required to produce 2.00 moles of CO2 is 1.00 mole × 84.01 g/mol = 84.01 grams.
The balanced equation for the reaction is: 2NaHCO3 -> Na2CO3 + CO2 + H2O.
From the equation, we can see that the molar ratio between NaHCO3 and CO2 is 2:1. This means that for every 2 moles of NaHCO3, 1 mole of CO2 is produced.
To produce 2.00 moles of CO2, we need half that amount of NaHCO3, which is 1.00 mole.
The molar mass of NaHCO3 is calculated by adding the atomic masses of its constituent elements: Na (22.99 g/mol) + H (1.01 g/mol) + C (12.01 g/mol) + O (16.00 g/mol) + 3O (16.00 g/mol) = 84.01 g/mol.
Therefore, the mass of sodium bicarbonate required to produce 2.00 moles of CO2 is 1.00 mole × 84.01 g/mol = 84.01 grams.
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Lab: Acids and Bases Assignment: Lab Report
What is the purpose of the lab, the importance of the topic, and the question you are trying to answer?
What is your hypothesis (or hypotheses) for this experiment?
What methods are you using to test this (or each) hypothesis?
Section II: Data and Observations
Locate the data and observations collected in your lab guide. What are the key results? How would you best summarize the data to relate your findings?
Do you have quantitative data (numerical results or calculations)? Do you have qualitative data (written observations and descriptions)? How can you organize this date for your report?
Section III: Analysis and Discussion
What do the key results indicate?
If you constructed graphs, what trends do they indicate in your data?
Were there any problems with the experiment or the methods? Did you have any surprising results?
Section IV: Conclusions
What do the results tell you about your hypothesis(es)?
How do the data support your claim above?
If you could repeat the experiment and make it better, what would you do differently and why?
Answers
Answer:
Lab: Acids and Bases Assignment: Lab Report
The main point is to help the scientific method and to also see how it works.Sometimes people refer to the tentative answer as "an educated guess." Keep in mind, though, that the hypothesis also has to be testable since the next step is to do an experiment to determine whether or not the hypothesis is right! A hypothesis leads to one or more predictions that can be tested by experimenting.>State the hypotheses. Every hypothesis test requires the analyst to state a null hypothesis and an alternative hypothesis. The hypotheses are stated in such a way that they are mutually exclusive. That is, if one is true, the other must be false; and vice versa.>Formulate an analysis plan. The analysis plan describes how to use sample data to accept or reject the null hypothesis. It should specify the following elements.>Analyze sample data.Using sample data, perform computations called for in the analysis plan.>Interpret the results. If the sample findings are unlikely, given the null hypothesis, the researcher rejects the null hypothesis. Typically, this involves comparing the P-value to the significance level, and rejecting the null hypothesis when the P-value is less than the significance level and etc.Section II: Data and Observations
In a lab guide, the key results are those that support my working hypotheses or serve to reject these assumptions. Moreover, the key results may also be other discoveries that are important to understand the processes and/or mechanisms investigated in the experiment.•?
Section III: Analysis and Discussion
Key Results are the measures and milestones that indicate how you know you will accomplish our Objective.A linear pattern is a continuous decrease or increase in numbers over time. On a graph, this data appears as a straight line angled diagonally up or down (the angle may be steep or shallow). So the trend either can be upward or downward.Yes, i was surprised and learn so much and it was no problem.Section IV: Conclusions
Results will tell you which hypothesis is true.describe specific part of the procedure.If I were able to repeat the lab and do it differently I would try to do two different things to improve it. I would try to create the model in a simpler manner that allowed me to better see how the erosion factored in. I would also try to take more detailed notes on it if I were to repeat it.i hope it's helpAnswer:
anyone know the section II answers for a lab like this but its the thermal energy transfer lab
Explanation:
^^
An ideal sample weighing 1.28g at 127C (temp) and 1 atm has a volume of 0.250L. Determine the molar mass of the gas.
Answers
Answer:
Molar mass of gas = 160 g/mol
Explanation:
Given data:
Mass of sample gas = 1.28 g
Temperature of sample gas = 127°C (127+273 = 400K)
Pressure of sample gas = 1 atm
Volume of sample gas = 0.250 L
Molar mass of gas = ?
Solution:
Formula:
PV = nRT
R = general gas constant = 0.0821 atm.L/ mol.K
Now we will put the values in formula.
1 atm × 0.250 L = n × 0.0821 atm.L/ mol.K ×400K
0.250 L.atm = n ×32.84atm.L/ mol
n = 0.250 L.atm/32.84atm.L/ mol
n = 0.008 mol
Molar mass of gas:
Number of moles = Mass/molar mass
0.008 mol = 1.28 g / molar mass
Molar mass = 1.28 g / 0.008 mol
Molar mass = 160 g/mol
Rocks that form from lava does not contain fossils. Explain why
Answers
As sedimentary rocks are formed from the accumulation of sediment, fossils can be buried and preserved over time, leading to the formation of fossil-rich sedimentary rocks.
What is Fossils?
Fossils are the remains or traces of prehistoric plants, animals, and other organisms that are preserved in rocks. Fossils provide valuable insights into the evolution of life on Earth, as they can help scientists to understand the types of organisms that lived in the past, how they evolved, and how they interacted with their environment.
Rocks that form from lava, such as igneous rocks, typically do not contain fossils because the high temperatures involved in the formation of lava can destroy organic matter, including the remains of plants and animals.
When lava flows onto the surface of the Earth, it can quickly cool and solidify, forming an igneous rock. This rapid cooling process does not allow for the preservation of any organic material that might have been present in the lava, including fossils.
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what are some damages for aftershocks
Answers
Some consequences of aftershocks are further worsening structural damage already caused by the earthquake (which leads to further loss of property and lives), building collapses, and moving places that are along fault lines (California for example drifts northward a tiny bit each year).
Identify one natural process that may cause sudden climate changes.
Answers
Answer:
Global Warming , Volcanic Eruption
which of these is not recovered through dry heating(evaporation)
Answers
The correct answer is C
Brainliest?
matching question match each description of molecular shape to the correct implication for polarity. instructions individual bond dipoles will cancel individual bond dipoles will cancel drop zone empty. individual bond dipoles will not cancel individual bond dipoles will not cancel drop zone empty. a species will be nonpolar overall a species will be nonpolar overall drop zone empty. a species will be polar overall a species will be polar overall drop zone empty. if individual bond dipoles cancel. for a species that has identical bonds and a symmetrical geometry. if individual bond dipoles do not cancel. for a species with an unsymmetrical geometry. need help? review these concept resources.
Answers
Answer: B
Explanation:
the ratio of student tickets to adult tickets for a drama production is 4 to 3. How many of each kind were sold if 840 tickets were sold in all?
Answers
Answer:
Adult tickets = A (cost $8)
student tickets = S (cost $4)
8(80) + 4(60) = 880
Explanation:
Substitution.
Adult tickets = A (cost $8)
student tickets = S (cost $4)
The drama class sold 20 more adult tickets than student tickets:
A = S + 20 (equation 1)
The class collected $880 from tickets:
8A + 4S = 880 (equation 2)
How many adult tickets were sold?
A = S + 20
8A + 4S = 880
we substitute the first equation into the second:
8(S+20) + 4S = 880
8S + 160 + 4S = 880
12S = 720
S = 60
Next we find the adult tickets by substituting back:
A = S + 20
A = 60 + 20
A = 80
Check our answer by substituting our answers in equation 2:
8A + 4S = 880 (equation 2)
8(80) + 4(60) = 880
640 + 240 = 880
880 = 880
If magnesium nitrate and sodium hydroxide are reacted together. What is the resultant colorless jelly-like precipitate that forms?
Answers
If magnesium nitrate and sodium hydroxide are reacted together the product formed are magnesium hydroxide and sodium nitrate.
Sodium nitrate is the chemical compound having the formula NaNO₃. This alkali metal nitrate salt is also known as Chile saltpeter to distinguish it from ordinary saltpeter, potassium nitrate. It is used as preservative agents in cured meats such as bacon, sausage and in some cheeses. It appears as a white crystalline solid. It is Noncombustible but accelerates the burning of combustible materials. It May explode under prolonged exposure to heat or fire. The toxic oxides of nitrogen are produced in fires. It is used in solid propellants, explosives, fertilizers, and for many other uses.
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When the equation
Cu + AgNO3 → Cu(NO3)2 + Ag
is balanced, the coefficient of copper (II) nitrate is
A. 0.
B. 3.
C. 1
Answers
An equation which follow the law of conservation of mass is called the balanced equation. The coefficient of copper (II) nitrate is 1 .The correct option is C.
What is a balanced equation?A chemical equation in which the number of atoms of reactants and products on both sides of the equation are equal is defined as the balanced chemical equation.
The coefficients are the numbers which are used to balance the chemical equation. They are added in front of the formulas. According to law of conservation of matter, mass can neither be formed nor be destroyed.
The balanced equation for the given reaction is:
Cu (s) + 2AgNO₃ (aq) → Cu (NO₃)₂ (aq) + 2Ag (s)
Here the coefficient of Cu (NO₃)₂ is 1. The number of 'Cu', 'Ag', 'N' and 'O' atoms are equal. So the given equation is balanced. The coefficient of AgNO₃ is 2, and 'Ag' is 2.
Thus the correct option is C.
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Potato plants with a Jellyfish gene will glow when they need to be watered.
is it
True or
False
Answers
This statement is true, potato plants with jellyfish genes do in fact glow when they need to be watered!
May i have brainliest? I need 1 more!
Answer:
Hello!!! Princess Sakura here ^^
Explanation:
True the chemist are working to develop more feature on to this plant as well.
Which statements best describe the first stage of cellular respiration? Check all that apply.
The stage happens in cytoplasm.
The stage happens in mitochondria.
Oxygen combines with small molecules.
Glucose is broken down.
Energy is released.
( 20 points) HELP ME QUICK IM TIMED
Answers
Answer:b
Explanation:
Answer:
The correct answer is The stages happens in the cytoplasm.
Explanation:
Explanation:Cellular respiration helps in the complete breakdown of carbohydrates basiclly glucose to form carbon dioxide,water and ATP molecules as energy source.Aerobic respiration consist of 3 principle steps
The first step is called glycolysis which deals with the catabolism of glucose into pyruvate by 10 enzymes catalyzed reactions.
Glycolysis occurs in the cytoplasm as many of the glycolytic enzymes are present in the cytoplasm of the cell in which the glycolysis is occuring.
Why don't we see clouds everywhere in the air all the time?
Answers
Answer:
Below:
Explanation:
The usual reason for the absence of clouds will be the type of pressure, with the area being under the influence of a high pressure or anticyclone. Air would be sinking slowly, rather than rising and cooling.
Hope it helps.....
It's Muska.... :)
Clouds generally appear when the air can't hold all the water. Since air at the ground holds more water, the water in the air won't condense out to form clouds.
How clouds are formed?Clouds can be described as tiny droplets of water or crystals of ice, which float in the air. They are capable to float since they are very small. Air gets moist as a result of the evaporation that occurs by the sun.
The moist air rises from the surface and progresses higher to become cooler furthermore. At sufficient altitudes, water vapor in the air condenses to produce droplets. These water droplets remain in the air and appear as clouds.
After reaching a point known as frost point in the air, droplets stop rising further. Then dewdrops in the sky come together and produce large water droplets as a cluster of molecules of water, which we know as clouds.
If the humidity is high enough then cooler and less dense won't hold water then it condenses to form clouds.
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how are sex cells different from body cells
Answers
Answer:
Sex cells are different in body cells because the sex cells are eggs while body cells are formed.