indicate whether the statement is true or false the ripening of a banana is an example of a chemical change
Answers
Answer:
True. Ripening of a banana is a chemical change
Related Questions
The melting point of three solids X,Y and Z are 298K, 314 K and 398K respictively.Arrange these in increasing order of their inter particle force of attraction
Answers
Answer:
Explanation:
The higher the melting point of a substance, then the higher the force of attraction. Which means there is direct relationship between the melting point and force of attraction.
The increasing order of interparticle force of attraction of the the three particles are
Z(398) Y(314) X (298)
I.e Particle " Z " have highest melting point, follows by particle "Y" follows by particle "X
NOTE: The melting point of a substance refers to the
temperature whereby there there is a change from solid state to liquid state, it is dependent on the pressure of the system
A swimming pool has a volume of one million liters. How many grams of HCI would need to be added to that swimming pool to bring the pH down from 7 to 4? C Assume the volume of HC)
is negligible)
Answers
When the concentration of HCl is given in mol/L and the volume is given in litres, the product C_HCl * V_HCl will tell us how many moles of HCl are required. We must multiply this by the molar mass of HCl, which is 36.46 g/mol, in order to convert it to grammes.
We must take into account the concentration of HCl required to produce this change in pH in order to determine how much HCl (hydrochloric acid) is required to lower the pH from 7 to 4 in a swimming pool with a volume of one million litres.
Since the pH scale is logarithmic, a change in one unit corresponds to a tenfold change in acidity. Three units separate pH 7 from pH 4, for example.
Assuming that the volume of HCl is denoted by V_HCl and its concentration by C_HCl, we can use the equation: C1V1 = C2V2 where C1 is the beginning concentration, V1 is the initial volume, C2 is the final concentration, and V2 is the final volume.
We may calculate the hydrogen ion concentration using the equation [H+] = 10(-pH) with an initial pH of 7 and a final pH of 4.
[H+]1 = 10(-7) mol/L, initial hydrogen ion concentration
[H+]2 = 10(-4) mol/L, the final hydrogen ion concentration.
Since the concentration of hydrogen ions in a strong acid is equal to the concentration of HCl, we have:
[H+]2 * V_pool = C_HCl * V_HCl
We obtain the following by substituting the values: C_HCl * V_HCl = 10(-4) mol/L * 1,000,000 L
The product C_HCl * V_HCl will give us the number of moles of HCl required because the volume of HCl is given in litres and the concentration is in mol/L. We must multiply this by the molar mass of HCl, which is 36.46 g/mol, in order to convert it to grammes.
Consequently, the formula is as follows: Mass of HCl = C_HCl * V_HCl * Molar mass of HCl.
Remember that the volume needed must be calculated based on the desired HCl concentration. We are unable to give a precise response to the query in the absence of this information.
For more question on concentration
https://brainly.com/question/28564792
#SPJ8
Which one of the samples contains the most molecules?
o
A. 1 mol of CO2(g)
B. 1 mol of UF6(g)
O C. 1 mol CH3COOH()
D. They all have the same number of molecules
Answers
Answer: D is right
Explanation: One mole contains 6.0225 ·10^23 molecules
Despite of the substance
consider the following initial rate data (at 309 k) for the decomposition of a substrate (substrate 1) which decomposes to product 1 and product 2: [substrate 1] (m) initial rate (m/s) 0.5 0.595 1 0.595 2 0.595 determine the half-life for the decomposition of substrate 1 when the initial concentration of the substrate is 2.01 m.
Answers
The half-life for the decomposition of substrate 1 when the initial concentration is 2.01 M cannot be determined from the given data.
The half-life of a reaction is the time it takes for the concentration of the reactant to decrease by half. In this case, we are given the initial rate data for the decomposition of substrate 1 at different concentrations, but we don't have information on the rate of change of concentration over time.
To determine the half-life, we need to observe the decrease in concentration over a period of time and calculate the time it takes for the concentration to decrease by half. However, the given data only provides information about the initial rates of the reaction at different substrate concentrations, which is not sufficient to determine the half-life.
To determine the half-life, additional data points with corresponding concentrations and reaction times would be required. With such data, we could plot a graph of concentration versus time and determine the time it takes for the concentration to reach half of its initial value.
To learn more about half-life click here
brainly.com/question/17438356
#SPJ11
How many times wider is a human hair
than an atom?
Answers
1. You may be using medium for shoot regeneration from leaf explants of a plant in Expt-5. The plant media may contain the plant growth regulators (hoones) BA and NAA. The molecular weight of BK is 72 A : and NAA is 186. The media is pH to 5.8. (a) Before making the plant media, you found the pH to be 3.6. What would you add quiekly to get it to a pH of 5.8 (give a specific name of the solution)? Why? (1 pt) (b) How much BA will be weighed fot a 1M solution? (Y po) (c) Convert your answer from (b) to mg/ml. (Y/ pt) (d) Convert your answer from (c) to mg 1 . (1 pt) (e) How much BA will be weighed for a 5mM solution? (1/4pt) (f) Convert your answer from (c) to mg/ml. ( /4pt ) (g) Convert your answer from (f) to mg/L. (H/ pt) (h) Your stock solution of BA is 5mM and your working solution is 0.2mg/.. What volume of the stoc be added to 250ml of medium? [Hint: fook at the previous answers Keep to 4 decimal pts.) (3 pts Convert your answer from (h) to μI, and which pipettor will you use to aliquot the B. A? (1 pt)
Answers
(a) To get the pH of the media to 5.8, you would add NaOH solution. NaOH is used as a basic solution, and when it is added to a solution, it will increase the pH of the solution.
(b) The molecular weight of BA is 225.3. To prepare a 1M solution, you would have to weigh out 225.3 grams of BA.(c) To convert a 1M solution of BA to mg/mL, you can use the following equation: 1 mole = molecular weight in grams; 1000 millimoles = 1 mole. So, 1 M = 1000 mg/mL. Therefore, a 1M solution of BA is equivalent to 1000 mg/mL .(d) To convert a concentration of 1000 mg/mL .
Therefore, to calculate the weight required for a 5 mM solution, use the following formula :Mass of BA = molarity × volume × molecular weight= 5 × 0.001 × 225.3= 1.1265 grams(f) To convert a concentration of 5 mM to mg/mL, we use the following formula: Concentration (mg/mL) = (Concentration (mM) × Molecular weight) / 1000= (5 × 225.3) / 1000= 1.1265 mg/mL(g)
To convert a concentration of 1.1265 mg/mL to mg/L, we multiply by 1000, so 1.1265 mg/mL = 1126.5 mg/L.(h) Given that the stock solution of BA is 5 mM and the working solution is 0.2 mg/mL.
To know more about increase visit:
brainly.com/question/19383315
#SPJ11
what are two benefits and one drawback of using models to represent scientific processes?
Answers
Two benefits of using models to represent scientific processes are that they can simplify complex systems and make predictions about how the system will behave. One drawback is that models are inherently simplified and may not fully represent the complexity of the real system.
How are models used in scientific research?
Models are used in scientific research to represent complex systems or phenomena, allowing scientists to make predictions, test hypotheses, and explore the behavior of the system under different conditions. Models can take many forms, including physical models, mathematical models, and computer simulations.
What are some examples of scientific models used in different fields of science?Examples of scientific models used in different fields of science include climate models used to predict future weather patterns, molecular models used to study chemical reactions and interactions, and ecological models used to understand the dynamics of ecosystems. Other examples include economic models used to study market behavior, anatomical models used to study the human body, and cosmological models used to study the structure of the universe.
Learn more about ecosystems here:
https://brainly.com/question/13979184
#SPJ1
I just need 4-8! Plz hurry!!!!!!!!!!!
Answers
Answer:
4: 90N
5: 7.77777m/s
6: 4
7: 12.5609756098
8: 187.5
Explanation:
Identify each of the following compounds as a nonelectrolyte, a weak electrolyte, or a strong electrolyte: (a) lactose (C12H22O11), (b) lactic acid (HC3H5O3), (c) dimethylamine [(CH3)2NH], (d) barium hydroxide Ba(OH)2.
Answers
The classification of the given compounds is as follows:
(a) lactose (C₁₂H₂₂O₁₁) - non-electrolytes
(b) lactic acid (HC₃H₅O₃) - weak electrolytes
(c) dimethylamine [(CH₃)₂NH] - weak electrolyte
(d) barium hydroxide Ba(OH)₂ - strong electrolytes
What are electrolytes?Electrolytes are substances that when in the molten or solution state conduct electricity and are decomposed by the direct current passing through them.
Electrolytes dissociate into the component ions when they are dissolved in water or in molten form. Some examples of electrolytes are acids and bases.
Strong electrolytes dissociate completely into one while weak electrolytes dissociate partially.
Non-electrolytes do not dissociate into ions in solution but remain as molecules. Some example of non-electrolytes is organic solvents.
Learn more about electrolytes at: https://brainly.com/question/17089766
#SPJ1
I’m learning about heredity
1. How can environment influencers inherited traits
2. How many chromosomes do humans have? Explain where these chromosomes come from.
Answers
Answer:
1. (See explanation)
2. 46. 23 from the mother’s egg and 23 from the father’s sperm.
Explanation:
ok for number one I am not entirely sure, but I am pretty sure that light, chemicals and temperature can all affect which genes get turned on and off. I am not entirely sure if the question is asking about the environment influencing inherited traits in the form of natural selection tho? If that is something you’re seeing right now, it might be a possible answer. But honestly I am not completely sure.
2- Humans have 46 chromosomes half from their mom and half from their dad.
Temperature is a measure of the _______ energy of the molecules within a substance.
Answers
Answer:
average kinetic energy
Explanation:
if dfb = 3 and dft = 29 and fobt = 3.15, what would you conclude using a = 0.05?
Answers
if dfb = 3 and dft = 29 and fobt = 3.15, using the given we can can reject our null hypothesis, H_0.
Option (a) is the correct choice.
From the available information,
d fB=3, d fT=29, alpha=0.05, F_{obt}=3.15
Then, dfw = dfT-dfB = 29-3 = 26
In variance analysis, the F value is utilized (ANOVA). Two mean squares are divided to calculate it.
The ratio of explained variance to unexplained variance is calculated using this formula. A theoretical distribution is the F distribution.
In hypothesis testing, F Statistics are looked up using the F Table. Although it's more typical to perform tests using software like Excel or SPSS, the F Table might be helpful for rapidly searching up several data at once.
From the F-table,
The tabulated value at F_{0.05}(3,26) is 2.975.
Here the calculated value 3.15 is greater than the tabulated value 2.975,
So, we can reject our null hypothesis, H_0.
For more questions on null hypothesis
https://brainly.com/question/4436370
#SPJ4
The complete question should be like:
if dfb = 3 and dft = 29 and fobt = 3.15, what would you conclude using a = 0.05?
(a) reject H_0
(b) reject H_1
(c) retain H_0
(d) retain H_1
if it turned out instead that some carbon 14 from the environment had contaminated the charcoal from the last part, would the true age of the same be younger or older than we thought, or would our age estimate be unaffected?
Answers
It turned out instead that some carbon 14 from the environment had contaminated the charcoal from the last part, would the true age of the same be (lower) / estimation is younger than its true age Contaminated samples, naturally, will have inaccurate results.
Radiocarbon dating has revolutionized how we think about the last 50,000 years. In 1949, Professor Willard Libby established the first radiocarbon dates. He later won the Nobel Prize for his work on dating by contrasting the three distinct carbon isotopes. The number of protons in the nuclei of different isotopes of a given element are the same, but the number of neutrons varies. This indicates that they have distinct masses despite having extremely similar chemical properties.
The number superscript denotes the isotope's total mass. The heaviest isotope, 14C (radiocarbon), is radioactive while the lighter isotopes, 12C and 13C, are stable. This indicates that because its nucleus is so massive, it is unstable. 14C decomposes to nitrogen over time (14N). The majority of 14C is created in the upper atmosphere when neutrons from cosmic rays interact with 14N atoms. After that, it undergoes oxidation to produce 14CO2, which is released into the atmosphere where it mixes with 12CO2 and 13CO2. After being utilized by plants for photosynthesis, this CO2 moves up the food chain.
Find out more about Carbon dating
brainly.com/question/29581952
#SPJ4
when something is melting is the energy going into the object or leaving the object
Answers
Answer:
The energy is absorbed which causes an increase in kinetic energy of particles hence increase in temperature (which is defined as the average kinetic energy of particle) thereby causing melting
Hope this helps :)
I'd appreciate if you'd mark me brainliest because I've
been stuck on the same rank for wayyy too long :(
Goodluck! :)
What is the percent by mass of hydrogen in sodium hydroxide?.
Answers
The percent by mass of hydrogen in sodium hydroxide is 2.88%.
Sodium hydroxide is also known as lye or caustic soda. It is a white crystalline or colorless, odorless solid that is soluble in water and has a bitter taste. Sodium hydroxide has the chemical formula NaOH, and its molar mass is 40.00 g/mol. The compound contains sodium, oxygen, and hydrogen.In order to find the percent by mass of hydrogen in sodium hydroxide, we need to calculate the mass of hydrogen and the mass of sodium hydroxide. Then we divide the mass of hydrogen by the mass of sodium hydroxide and multiply by 100 to get the percentage.In one mole of sodium hydroxide, there is one mole of hydrogen, so the mass of hydrogen in one mole of sodium hydroxide is 1.008 g. The mass of one mole of sodium hydroxide is 40.00 g, which is the sum of the atomic masses of sodium, oxygen, and hydrogen.
Therefore, the percent by mass of hydrogen in sodium hydroxide is:
mass of hydrogen/mass of sodium hydroxide x 100% = 1.008 g/40.00 g x 100%
= 2.52%
However, this is the percent by mass of hydrogen in the chemical formula of sodium hydroxide, which is NaOH. In a real sample of sodium hydroxide, there may be impurities or water molecules, which would affect the mass of hydrogen and the mass of sodium hydroxide.
Therefore, the percent by mass of hydrogen in a real sample of sodium hydroxide would be slightly different from 2.52% The percent by mass of hydrogen in sodium hydroxide is 2.88%. The mass of hydrogen in one mole of sodium hydroxide is 1.008 g. The mass of one mole of sodium hydroxide is 40.00 g.
To know more about sodium hydroxide visit:
brainly.com/question/10073865
#SPJ11
A certain gas has a volume of 195 mL at 20°C and 1.00 atm. What is the its volume in mL at60°C and 600 mm Hg?
Answers
To solve this question we will assume that the moles of gas do not change and that the gas behaves like an ideal gas.
For an ideal gas we have that its behavior will be according to the following equation:
\(PV=nRT\)Where,
P is the pressure of the gas, in atm
V is the volume of the gas, in liters
n are the moles of the gas
T is the temperature of the gas, in Kelvin
R is a constant, 0.08206 atm.L/mol.K
We have for this gas two states, an initial state (1) and a final state (2), so for each state we can apply the ideal gas law, we will have:
Initial state:
\(\begin{gathered} P_1V_1=nRT_1 \\ nR=\frac{P_1V_1}{T_1} \end{gathered}\)Final state:
\(\begin{gathered} P_2V_2=nR_T_2 \\ nR=\frac{P_2V_2}{T_2} \end{gathered}\)Since nR are constants, we can equate both equations:
\(\frac{P_1V_1}{T_1}=\frac{P_2V_2}{T_2}\)For each state the conditions of pressure, volume and temperature will be:
P1=1.00atm
V1=195mL = 0.195L
T1=20°c = 293.15K
P2= 600mmHg=0.79atm
T2=60°C=333.15K
V2=Unknown
We clear V2 and replace the known data:
\(V_2=\frac{P_1V_1}{T_1}\times\frac{T_2}{P_2}\)\(\begin{gathered} V_2=\frac{1atm\times0.195L}{293.15K}\times\frac{333.15K}{0.79atm} \\ V_2=\frac{1\times0.195\times333.15}{293.15\times0.79}L \\ V_2=0.280L=280mL \end{gathered}\)Answer: The final volume of the gas will be 280mL
the minister in change of religious and charititable patreonage was known as
Answers
Answer:
sadr
Explanation:
Pls give brainlist
Which of the following is an advantage angiosperms and gymnosperms have over mosses?
they do not need water
they are seed-producing so can populate more areas
they can photosynthesize
they can use oxygen
Answers
Answer:
they are seed producing so can populate more areas
5
Select the correct answer.
A chemistry student heated Iron (a graylsh solid) with sulfur (a yellow solid) and observed a black, lumpy solid forming. What is the student's
conclusion?
A. A physical change has occurred, and a new substance has formed.
B. A chemical change has occurred, and a new substance has formed.
OC A physical change has occurred, and the reactants and products have the same properties.
D. A chemical change has occurred, and the reactants and products have the same properties.
Reset
Next
O 2020 Edmentum. All rights reserve
Answers
Answer:
B.
Explanation:
The change in color and the indistinguishable states of the substances must indicate a chemical change.
hi, put the following bonds in order from shortest to longest: single, double, triple. which is the strongest and which is the weakest? explain...please :)
Answers
strongest bond is the triple bond
The weakest is the single bond
Explanation:
Q4. When 20 g of salt is added to a beaker containing 100 g of water, the salt dissolves and seems to disappear as a solution is formed. A) What is the mass now? B) Explain your answer.
Answers
B. This is because the salt forms a solution with the water hence their individual masses will be summer giving you a mass greater than both individual masses.
The mass of the solution is equal to 120 g. As the salt dissolves in water so it disappears when the solution is formed.
Why does salt dissolve in water?The salt dissolves in water at the molecular level, due to electrical charges. Due to this fact that both water and salt are polar, with positive and negative charges on opposite sides of their molecule. The bonds in salt are ionic and have an electrical charge.
Likewise, a water molecule is also ionic in nature, but the covalent bonds are present with two hydrogen atoms and one oxygen atom, which has a negative charge. The salt dissolves because the covalent bonds of water molecules are stronger than the ionic bonds present in the salt molecules.
The mass of the given salt is equal to 20 g while the mass of water is 100g. The total mass of the solution is equal to the sum of the mass of the solute and the mass of the solvent. Therefore, the mass of the solution will be equal to 120 grams whether the salt gets dissolved in water and get disappeared.
Learn more about salt dissolution, here:
https://brainly.com/question/14515128
#SPJ5
If a car traveling at 75 mph west, changes its direction to east, does its acceleration change?
yes or no (1pt)
and explain why you chose the answer
Answers
Answer:
No because it changes velocity, instead of accelerating
Explanation:
and yes, I am in K12 ツ
Answer:
no
Explanation:
it changes velocity, instead of accelerating
An atom is neutral. Its nucleus contains two protons and two neutrons. How
many electrons does the atom have?
Answers
Answer: zero
Explanation:
its zero because when something is neutral is not on either team because with numbers there is positive numbers and negative numbers but zero isn't positive or negative so its neutral. ps: can I get branliest
Why are there airlock on Mars and how do you think they work
Answers
Answer:
to protect astronauts from dieing from no air or presurre
Explanation:
what do u mean by change in state of matter?define it.
Answers
Answer:
The mode of changing from one state of matter into another state and back to the former or original state is called change in state of matter .
hope it is helpful to you
Answer:
change in one state from another and back in its own original is known as change in state of matter
What are the coefficients of the balanced chemical reaction of
Fe + Cl2 --> FeCl3 ?
Answers
Answer:
Iron reacts with chlorine gas to form ferric chloride. Thus two moles of Iron reacts with three moles of chlorine gas to form two moles of ferric chloride salt. Thus the coefficient of chlorine is 3.
Explanation:
Can someone plz help me :<
Answers
Answer: cats r alliens because they r kind of like ufos they would usually wonder around rather u know it or not when they spy on us it could b with us sleep cooking anything so they r like aliens
Explanation:
Which one of the following is not true about transition metals?A. They typically have low melting pointsB. Their compounds frequently exhibit magnetic propertiesC. Their compounds are frequently coloredD. They frequently have more than one common oxidation state
Answers
Option A is not true about transition metals.
Option A is not true about transition metals. Transition metals are known to have high melting points due to the strong metallic bonds between their atoms. This is because transition metals have partially filled d-orbitals that contribute to their metallic bonding, making them stronger and harder than other metals. Additionally, transition metals often have more than one common oxidation state, which makes them versatile and useful in various chemical reactions. Their compounds are frequently colored due to the presence of partially filled d-orbitals that can absorb light of certain wavelengths, resulting in the observed colors. Lastly, their compounds frequently exhibit magnetic properties due to the presence of unpaired electrons in their d-orbitals. Therefore, it is clear that option A is not true about transition metals, and they typically have high melting points instead.
To know more about transition metals visit: https://brainly.com/question/29828769
#SPJ11
This running horse has a mass of 450 kg, and it is moving at 25 m/s, what it's momentum?
Answers
Answer:
Explanation:
jsjshwanjakansksnsnnanjaja
11,250 is its momentum
Explanation:
The formula for momentum is p(momentum)=m(mass)v(velocity). So plug those in.
p=(450kg)(25m/s)
p=11,250
The illustration below shows the Gulf Stream carrying warm water up the east coast of America on its way to Western Europe. These warm equatorial surface currents are responsible for the moderate winter climates of certain countries such as France and Spain. Which of the following is most responsible for this occurrence?
The sun heats earth’s oceans causing convection currents to travel from the equator to the poles.
Differences in the ocean’s salinity cause deep water convection currents.
Convection within earth’s mantle caused by a hot iron core.
Global wind patterns that determine the direction of surface curren
Answers
Answer: The sun heats earth’s oceans causing convection currents to travel from the equator to the poles
Explanation: found it on a quizz thingy :D
The following is most responsible for the occurrence is the sun heats earth’s oceans causing convection currents to travel from the equator to the poles. Hence option A is correct.
Current is defined as a movement of electrical charge carriers, most frequently electrons or atoms deficient in electrons. Electric current is a term used to describe how much electricity flows across a circuit and how it flows in an electronic circuit. Three elements are required to create an electric current: a supply of freely flowing electric charges (electrons), some kind of push to move the charges across the circuit, and a path to carry the charges.
Convection current is defined as a procedure when energy is transferred from one location to another. It is also known as heat transfer by convection. Plate tectonics is fueled by magma convection currents. Magma is produced by the heat produced by the radioactive decay of materials in the Earth's interior.
Thus, the following is most responsible for the occurrence is the sun heats earth’s oceans causing convection currents to travel from the equator to the poles. Hence option A is correct.
To learn more about current, refer to the link below:
https://brainly.com/question/3110787
#SPJ6