Answer:
stroke
Explanation:
What is a neutralization reaction?
1. Calculate the molar mass of sucrose (C12 H11 O22)?
Answer:
=342g
Explanation:
atomic mass of C = 12g
atomic mass of H = 1g
atomic mass of O = 16g
Solution;
C12 H22 O11
= 12 (12) + 22 (1) + 11(16)
= 144+ 22 + 176
= 342g
13) A gas has an initial state of 500 K, 6.5 atm, and occupies 8.0 L. What will the final volume be if the pressure is kept constant and the temperature is decreased to 150 K?
What is the reciprocal of cell constant?
Explanation:
resistivity is the reciprocal of cell constant
What happens when two substances of different temperatures come in contact with each other?
Answer:
The hotter one loses heat and the cooler one gains heat until they become equal in temperature.
What is the IUPAC name of the compound N2O?
Answer:
Nitrous Oxide
Explanation:
If you had 1 mol of Cr7(PO4)3 how many moles of Cr would there be?
Besides drinking water, how is water helpful for life and nature?
Answer:
The composition of a water molecule is one of the first chemical compounds we learn—H2O—two hydrogen atoms and one oxygen atom. The atoms connect in a slightly offset or triangular structure, which creates a positive charge on one side of the molecule and a negative charge on the other.
Explanation:
Water is essential to life—we learn this early in our elementary school years. This information is often accompanied by the fact that over 50% of our bodies are made up of water. However, the lesson does not always go on to explain what it is about water that makes it so essential.
(Hope this was helpful!)
what are three classes of levers? (science)
The three classes of lever include first, second and third class lever.
What are levers?Levers are simple type of machine that are used to transfer the force used to lift a load.
Examples of lever include the following:
First class lever: This is the type of lever where the fulcrum is between the load and the effort.Second class lever: This is the type of lever that has the load between the fulcrum and effort.Third class lever: This is the type of lever that has the effort between the fulcrum and the load.Therefore, the three classes of lever include first, second and third class lever.
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Write two equations for the neutralization of nitric acid, HNO, with magnesium hydroxide, Mg(OH). In the first equation, include the spectator ions. In the second, do not include the spectator ions.
Answer:
where the formula
Explanation:
Answer:
Explanation:
Your answer should include the total ionic equation (for the equation with spectator ions) and net ionic equation (for equation that does not include spectator ion).
ignore the top equation labelled molecular equation
Disclaimer: the solid MgOH2 works only for Mg(OH)2 in solid phase.
If we assume the Mg(OH)2 is aqueous, then I have attached a second picture (replace Ca with Mg), the boxed equations are your answers.
The volume of a gas filled balloon is 22L at 313K and 1.5 atm. What would the volume be at 273K and 1 atm?
Answer:
28L
Explanation:
V1 = 22L V2 = ?
T1 = 313K T2 = 273K
P1 = 1.5atm P2 = 1.0atm
Using the combined gas law equations;
[tex]\frac{P1V1}{T1}= \frac{P2V2}{T2}[/tex]
∴[tex]V2 = \frac{P1V1}{T1} * \frac{T2}{P2}[/tex]
= [tex]\frac{1.5*22}{313} * (\frac{273}{1})[/tex]
V2 = 28L
From the calculations and the statement of the general gas equation, the volume of the gas becomes 28.8 L
What are gas laws?The gas laws are used to show the relationship between the variables in problems that has to do with gases.
In this case, we have to apply the general gas law as follows;
P1V1/T1 = P2V2/T2
P1V1T2 = P2V2T1
V2 = * 22L * 1.5 atm * 273K/313K * 1 atm
V2 = 28.8 L
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Most enzymes work best at 37C because at lower and higher temperatures, the conditions are not optimal for their performance. Explain in DETAIL what happens at low temperatures, optimal temperature and high temperatures with the molecular speed, energy and interactions. Be sure to explain what denaturation means.
That's because the solubility
Temperature is directly proportional to solubilityHigher the solubility higher the temperature
Lower the temperature lower the solubility
So
Less temperature makes enzymes work faster
What other organisms feed on the same material?
Answer:
A heterotroph is an organism that eats other plants or animals for energy and nutrients. The term stems from the Greek words hetero for “other” and trophe for “nourishment.”
Imagine you are in Spain and begin cooking some pasta for your dinner.
You notice the recipe reads "Bring water to a boil at 100 C". What is the
temperature of your water in Kelvin?
Ο OK
100 K
273 K
373 K
11. How many molecules of oxygen will be consumed when 33.6 liters of water is produced?
Answer:
67.2 litres of oxygen will be consumed
Explanation:
Step 1 : Write the balanced chemical equation:
2H₂ + O₂ → 2H₂O
Step 2: find the ratio of O₂ : H₂O
O₂ : H₂O
1 : 2
67.2 : 33.6
Thus, 67.2 litres of oxygen will be consumed
How many molecules ?
Answer:
42 millions of single cells
What environment will produce the largest crystal sizes?
Construct a short Essay (Make sure you include information about Temp, Pressure, amount of dissolved solids, & cooling time)
Is there support for your Claim?
Answer:
one factor is the speed at which crystals are formed
explanation:crystals that are formed near or on the surface tend to crystalize faster and therefore are usually smaller crystals deeper in the crust tend to crystalize slower and therefore are larger
1) Students are interested in quickly completing their lab experiment before going to lunch. What are 4
ways to increase the reaction rate below?
Zn() + 2HCl(aq)
Hz(s) + ZnCl2(g) + heat
The reaction rate can be increased by increasing the temperature, increasing the concentration of reactants, using catalysts, or increasing the surface area of the reactants.
Factors affecting rates of reactionsThe factors affecting the rate of reactions include:
Temperatureconcentration of reactantsAddition of catalystsSurface area of reactantsEach factor affects the rate of reaction as follows:
Increased temperature increases the rate of reactionIncreasing the concentration of reactants increases the rate of reactionAdding catalysts increases the rate of reactionsIncreasing the surface area of reactants increases the rate of reactions.More on factors affecting rates of reactions can be found here: https://brainly.com/question/14817541
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solubility constant 5
For the dissolving of CaF2, the equilibrium constant expression, Ksp, is
Select one:
O Ksp = [Ca2+] [F]²
Ksp = [Ca2+] [F] / [CaF₂]
O Ksp = [Ca²+] [F]
O
Ksp = [Ca2+] [F]²/[CaF₂]
O
Ksp = [CaF₂] / ([Ca²+] [F] ²)
The Ksp of the compound CaF2 is given as; Ksp = [Ca2+] [F]²
What is solubility product?The term solubility product has to do with the extent to which a substance dissolves in solution.
For the compound CaF2, we have; CaF2(s) ⇆Ca^2+(aq) + 2F^-(aq). Hence, the Ksp of the solution is Ksp = [Ca2+] [F]²
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A state government is trying to decide between using biomass or nuclear power to generate electricity. What advantage does biomass have over nuclear power?
0
A. Biomass does not produce pollution
0
B. Biomass releases less carbon dioxide.
0
C. Biomass is a nonrenewable source.
A
D. Biomass produces no radioactive waste
Answer:
D Biomass produces no radioactive waste
Explanation:
An alpha particle is made up of
O one proton and one neutron
Otwo protons and two neutrons
Oone electron
Otwo electrons
Answer: two protons and two neutrons
Explanation:
An alpha particle is just a helium-4 isotope, which obviously has 2 protons and 2 neutrons.
A process in which a large nucleus splits into two or more parts is called ?
(A) nuclear fission
An alpha particle is made up of _____.
(C) two protons and two neutrons
Which statement best describes the type of radioactive decay shown in the model?
(D) The model shows alpha decay, which is a type of nuclear fission.
Is beta decay a form of nuclear fission?
Responses
(A) No, it is not because the mass number does not change.
Which statement correctly classifies gamma emission?
(D) Gamma emission is a type of radioactive decay, but it is not a fission reaction.
Explanation:i just did the quick check, hope this helps UwU
How Is Your Mind Related to Your Body
Answer:
The brain and body are connected through neural pathways made up of neurotransmitters, hormones and chemicals. These pathways transmit signals between the body and the brain to control our everyday functions, from breathing, digestion and pain sensations to movement, thinking and feeling.
Which of the following do sound waves generally travel most
quickly through?
Answer:
Sound waves travel faster through solids, because they can better transmit the soundwaves to your eardrum faster since they are closer together than air.
Answer:
Sound waves generally travel most quickly through gases.. Sounds can travel through air and water but not through solids. Sound waves travel hope this helps!
a gas sample has a total pressure of 1.7atm. if the sample contains 2 gases and 1 gas has pressure of 0.7 atm, what is the pressure exerted by the other gas?
Answer:
1 atm
Explanation:
The other gas exerts the remaining pressure
1.7 - .7 = 1 atm
Besides drinking water, how is water helpful for life and nature?
Answer:
It keeps us alive, helps us grow plants, helps plants thrive, gives us food, helps keep our animals and crops healthy, cleans us, and so much more
Explanation:
The provided map shows the location of an earthquake under the ocean.
The data on the map would best support a prediction of which of the following events?
O A tsunami in Sri Lanka
O An earthquake in South Africa
O A hurricane in Somalia
O Flash floods in Madagascar
Answer:
Option 1
Explanation:
An underwater earthquake will most likely cause a tsunami. Sri Lanka lies very close to the source of the earthquake, hence the answer is :
A tsunami in Sri Lanka
The substance being dissolved
A) Solute
B) Solubility
C) Solvent
Answer:
A) Solute
Explanation:
In forming a solution, the substance which is dissolved by the action of the solvent is called solute.
Select the correct structure that
corresponds to the name.
2,2,3-trichloro-3-fluorohexane
A.
B.
CI
CI
CI
CI
F
חד
CI
C. both
Answer:
C
Explanation:its right
The correct structure that corresponds to the name 2,2,3-trichloro-3-fluorohexane is both. Thus option C is correct.
What is chemical structure?Chemical structure is defined as the physical configuration of atoms within a molecule. The molecular geometry of the molecule is determined by its chemical structure. By illustrating how the atoms and chemical bonds are arranged in space within the molecule, chemical structure can be used to establish the molecular geometry of a product. Chemists can now see a crucial visual depiction of a chemical formula thanks to this.
2,2,3-trichloro-3-fluorohexane structure given is both are correct as one of the structure is trans form and the other is cis form of the structure. Option A is trans form while option B is cis form of structure.
Thus, the correct structure that corresponds to the name 2,2,3-trichloro-3-fluorohexane is both. Thus option C is correct.
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Activist groups have helped increase awareness of the dangers of drinking and driving.
A. True
B. False
Define reaction rate.
a. An unstable arrangement of atoms that forms momentarily at the peak of the activation-energy
barrier
b. The minimum energy that colliding particles must have in order to react
c. A measure of speed of any change that occurs within an interval of time
d. Atoms, ions, and molecules can react to form products when they collide with one another,
provided that the colliding particles have enough kinetic energy.
Answer:
B
Explanation:
Answer:
B
Explanation:
Reaction rate can be defined as :
the minimum energy that colliding particles must have in order to react