Which statement describes the differences between chemical reactions and nuclear decay rates? Chemical reaction rates vary, but nuclear decay rates are constant. Both chemical reaction rates and nuclear decay rates vary. Nuclear decay rates vary, but chemical reaction rates are constant.

Answers

Answer 1

Answer:

Answer the last one Nuclear decay rates vary, but chemical reaction rates are constant

Explanation:

Correct me if im wrong

Answer 2

Answer:

Chemical reaction rates vary, but nuclear decay rates are constant.

Explanation:

gradepoint


Related Questions

Write a strong claim about the question:

What shape are cells?
( i don't really need a long answer)

Answers

Answer:

Usually, the cells are round, elongated or spherical. There are also some cells which are long and pointed on both the ends. Such cells exhibit spindle shape. In some cases, the cells are very long.

Explanation:

Hope I helped! Brainliest plz!

Plants and animals require large amounts of water in order to survive. Although vast numbers of plants and animals have lived throughout time, the amount of water in our environment has remained relatively constant. Which of the following statements explains why this occurs?


A. Water continually flows from the center of Earth.
B. Vast quantities of water are created by lightning in clouds.
C. Organisms return water to the environment after they use it.
D. Organisms combine hydrogen and oxygen to make their own water.
please help me

Answers

Answer: C - Organisms return water to the environment after they use it.

Explanation: The amount of water on earth will always remain the same. Water goes in and out of all organisms. It is not possible to be more or less.

CAN SOMEONE PLEASE HELP ME WITH THIS?!!!!

Answers

Answer:

1. A. 9 eggs

2. B. 5:3

3. C. Exactly 44 g

4. C. Mass and atoms only

5. D. 6.81 g of PH₃

6. C. 88.4%

7. B. O₂

8. D. 30.8 g CO₂

9. B.

10. B.

11. C. 99 g

12. D. mole ratio

13. C. Theoretical

14. A. 6.0 mol H₂O

15. D. 39.7 g CH₃OH

16. A. 650 g HgO

17. D. 8.8 mol H₂

18. B. 82.6%

Explanation:

1. The number of eggs it takes to make 1 cake = 3 eggs

The number of eggs it takes to make 3 × 1 = 3 cake = 3 × 3 = 9 eggs

Therefore, the correct option is;

A. 9 eggs

2. The given reaction is presented as follows;

C₃H₈(g) + 5O₂(g) → 3CO₂(g) + 4H₂O(l)

In the above reaction, we have;

Moles of , O₂, reacted = 5 moles

Moles of , CO₂, produced = 3 moles

The ratio of the of O₂ reacted to moles of CO₂ produced = 5 moles:3 moles

∴ The ratio of the of O₂ reacted to moles of CO₂ produced = 5:3

The correct option is;

B. 5:3

3. The reaction is presented as follows;

O₂ (g) + C(s) → CO₂ (g)

From the reaction, 1 mole (12 g) of carbon produces 1 mole of CO₂

The molar mass of CO₂ = The mass of 1 mole of CO₂ = 44.01 g/mol

Given that the reaction is completed, the mass of CO₂ produced = The mass of 1 mole of CO₂ ≈ 44 g

The correct option is;

C. Exactly 44 g

4. The given reaction is presented as follows;

N₂ + 3 F₂ → 2NF₃

The initial number of atom = 2 + 6 = 8

The final number of atom = 2 × 4   = 8

∴ The initial number of atom = The final number of atom

Therefore, the number of atoms is conserved;

The mass of the reactants ≈ 28 g/mol + 3 × 37.996806 g/mol ≈ 141.993612 g/mol ≈ 142 g/mol

The mass of the product ≈ 2 × 71 g.mol = 142 g/mol

∴ The mass is conserved

Moles of reactants = 1 + 3 = 4

Moles of products = 2

∴ The number of moles is not conserved

The correct option is

C. Mass and atoms only

5. The molar mass of P₄ = 123.895048 g/mol

One mole of P₄ (123.895048 g) produces four moles (4 × 34.00) of PH₃

6.20 g of P₄. will produce (4 × 34.00)/(123.895048) × 6.20 g ≈ 6.80576 g ≈ 6.81 g

The correct option is D. 6.81 g of PH₃

6. The percentage yield = ((The actual yield)/(The ideal yield)) × 100

The actual yield of silver = 38.1 g

The ideal yield of silver = 43.1 g

∴ The percentage yield = ((38.1 g)/(43.1 g)) × 100 = 88.3990719258% ≈ 88.4%

The percentage yield = 88.4%

The correct option is C. 88.4%

7. The given chemical equation is presented as follows;

CS₂ (g) + 3 O₂ (g) → CO₂ (g) + 2 SO₂ (g)

The number of moles in 192 g of O₂ = 192 g/(32 g/mol) = 6 moles

Given that 3 moles of O₂ reacts with 1 mole of CS₂ to produce 1 mole of CO₂ and 2 moles SO₂,  therefore 2 × 3 = 6 moles of O₂ will reacts with 2 × 1 = 2 moles of CS₂ to produce 2 moles of CO₂ and 4 moles SO₂

∴ The limiting reactant is;

B. O₂

8. The given chemical equation is presented as follows;

2 C₈H₁₈ (g) + 25 O₂ (g) → 16 CO₂ (g) + 18 H₂O (l)

The number of moles in 10 g of C₈H₁₈, n₁ = (10 g)/(114.26 g/mol)

The number of moles of CO₂ produced, n₂ = (10 g)/(114.26 g/mol) × 16/2 ≈ 0.7 moles

The mass of CO₂ produced, m ≈ 44.01 × n₂ ≈ 44.01 g/mol × 0.7 moles ≈ 30.807 grams ≈ 30.8 grams

The theoretical yield of CO₂ from completely burning 10.0 g of C₈H₁₈ ≈ 30.8 grams of CO₂

The correct option is D. 30.8 g CO₂

9. The correct option is B. The limiting reactants determine the maximum amount of product that can be formed

10. Option B, which has 3 atoms of each element combining to form a product with 1 atom of one element and 2 atoms of the other element

The correct option is B.

11. By the conservation of mass, we have;

The mass of the reactants = The mass of the products

Let 'x' represent the mass of zinc in the products of the reaction

Therefore, we have;

61 g of calcium + 207 g of zinc chloride = 169 g of calcium chloride + x g of Zinc

∴  x g = 61 g + 207 g - 169 g = 99 g

The mass of zinc in the products of the reaction, x g = 99 g

The correct option is;

C. 99 g

12. The quantity that must be used to convert from one chemical substance to another is the mole ratio

The correct option is D. mole ratio

13. The maximum mass of the product that could form in a reaction is called the theoretical yield, which is option C.

The correct option is C. Theoretical

14. 1 mole of O₂ produces 2 moles of water (H₂O), therefore;

3 × 1 = 3.0 moles of O₂ will produce 3 × 2 = 6 moles of H₂O

The correct option is

A. 6.0 mol H₂O

15. 2 mole × 2.02 g/mol = 4.04 g of H₂ (g) produces 32.05 g CH₃OH (l)

∴ 5 g of H₂ (g) will produce 32.05 g × 5/4.04 ≈ 39.6658416 g ≈ 39.7 g of CH₃OH

The correct option is;

D. 39.7 g CH₃OH

16. 2 (2 × 216.59 g = 433.18 g) moles of HgO produces 1 mole of O₂

1.5 mole of O₂ will be produced by 1.5 × 2 = 3 moles (3 × 216.59 g = 649.77 g ≈ 650 g) of HgO

The correct option is A 650 g HgO

17. 3 moles of H₂ produces 2 moles of NH₃

The number of moles of NH₃ in 100 g of NH₃, n = 100 g/(17.04 g/mol) = 5.868544 moles

The number of moles of H₂ that will produce 5.868544 moles of NH₃ = 3/2 × 5.868544 moles = 8.802816 moles ≈ 8.8 moles

Therefore, the correct option is;

D. 8.8 mol H₂

18. The theoretical yield of PbO = (223.2/331.2) × 9.90 g = 6.67173913 g

The percentage yield = (5.51 g)/(6.67173913 g) × 100 ≈ 82.6%

The correct option is option B 82.6%.

In what direction does erosion always occur?
a. Downhill
b. Uphill
C. South
d. West

Answers

I'm going to take a guess here and say it is downhill because water runs down the hill eroding the ground which is why landslides can happen. I'm sorry if I'm wrong.

Does sanitizer conduct electricity

Answers

Answer:

Yes, since it has alcohol, it conducts electricity.

Can someone help me Balance chemical equations please

Answers

2NaClO3 = 2NaCl + 3O2
Hopes this helps <33

If the mass of all the reactants in a chemical reaction is 100g, what will the mass of all products be?

Answers

HUNDRED GRAMS too because of the law of conservation of mass. The law of conservation of mass states that mass is neither created nor destroyed. So both sides will have the same mass

How many moles are in 281 g of Ca(OH)2?

Answers

Answer:

3.79 moles

Explanation:

To convert moles to gams of a substance we need to find the molar mass of the substance. For Ca(OH)₂ th molar mass is:

1Ca = 40.08g/mol

2O = 2*16g/mol = 32g/mol

2H = 2*1.01g/mol = 2.02g/mol

The molar mass is:

40.08g/mol + 32g/mol + 2.02g/mol = 74.1g/mol

And moles are:

281g * (1mol / 74.1g) =

3.79 moles

What should you do with a chemical burn?

A. use butter on the burn, bandage, and send the employee home to rest

B. use ice on the burn, bandage, and send the employee to the hospital

C.do not touch the victim, keep the victim quiet and call for medical assistance

D. call for medical assistance and check the MSDS for emergency interventions

Answers

Answer:

C. do not touch the victim keep the victim quiet and call dor medical assistance

Answer:

D.

Explanation:

MSDS if available should have tx instructions once a call for emergency medical assistance has been made

The energy transformation in an electromagnetic is from chemical to electrical to electromagnetic waves.

True or False?

Answers

True I think but I could be wrong
I think false sounds best but try true first

what is the answer to N2+H2=NH3

Answers

Explanation:

This can be fixed by multiplying the product contacting nitrogen by 2. o The new chemical equation is N2 +H2 →2 NH3. Reactants. Products. Nitrogen. 2. 2.

which of the following solids would not decompose on heating​

Answers

Answer:

Anhydrous sodium carbonate is stable to heat and does not decompose even when it is heated to redness. This is because sodium carbonate salt on heating with acids react to release carbon dioxide.

5. What is characteristic of an opaque object.​

Answers

Not transparent, opaque objects don’t reflect light nor let light through

Determine the empirical formula of the compound with the percent composition of 26.6% K, 35.3% Cr and 33.0% O. *
3 points

Answers

Answer:

KCrO₃

Explanation:

26.6% K, 35.3% Cr and 33.0% O

The steps in obtaining the empirical formulae from percentage composition is given as;

Step 1:

Divide the percentage composition by the atomic mass of the elements

K = 26.6 / 39.0983  = 0.6803

Cr = 35.3 / 51.9961 = 0.6789

O = 33.0 / 16  = 2.0625

Step 2:

Divide all though by the smallest number (0.6789)

K = 0.6803 / 0.6789 = 1.002

Cr = 0.6789 / 0.6789 = 1

O = 2.0625 / 0.6789 = 3.038

The Empirical formular is the ratio between the elements. This given as;

KCrO₃

Cart A has a mass of 24 kg and is being pulled with a force of 32 N. Cart B has a mass of
27 kg and is being pulled with a force of 33 N. Which cart will have the faster acceleration?

Answers

Cart b because it has greater force and higher mass

Where are the volcano located

Answers

Answer:

In the ring of fire

Hope this acc helps

Task B: Use the following maps to complete the questions:
Plantsburgh
2090
30
Watertown
35920
988
Lake Ontario
Rochester
317
Buffalo
2911
20
29 960
18
Lake
Erie
-992-
Utica
42,
983)
39
Albany
Ithaca
-996
051
36
40 960
1000
38
1004
1008
1. Which type of pressure center is shown on the map?
a) Low pressure
b) High pressure
une used to collect this data

Answers

Answer:

1. B2. A3. B4. B5. CI HOPE IT HELPS :) 100% sureness

Which substances are most likely acids? Check all that apply. CH4, HI, NH3, HNO3, NaCI

Answers

Answer is: CH4 and NaCI hope this helps you

7. H3PO4 →
H4P207+
H20
Balance the equation

Answers

This should hopefully help

2H³PO⁴ --> H⁴P²O⁷ + H²O

Can someone please help I need help?!?!

Answers

Answer:

a: 6 moles

b: 6.75 moles

c: 5 grams

Explanation:

a: mole ratio 2:3

b: mole ratio 2:3

c: mole ratio 2:2

How
much heat must be added to
85g
of water
to raise its temperature 225?

Answers

Answer:

One of water's most significant properties is that it takes a lot of heat to it to make it get hot. Precisely, water has to absorb 4,184 Joules of heat (1 calorie) for the temperature of one kilogram of water to increase 1°C.

Explanation:

3. What tool do we use to measure force?

Answers

Spring Scale or a force gauge

Answer:

A force meter

How many molecules are in 41.8 g H2O?

Answers

Answer:

7.63 × 10²³ molecules

Explanation:

First, convert grams to moles using the molar mass of water (32.988 g/mol).

41.8 g  ÷  32.988 g/mol  =  1.267 mol

Next, convert moles to molecules using Avogadro's number (6.022 × 10²³).

1.267 mol  ×  6.022 × 10²³ molecules/mol = 7.63 × 10²³ molecules

Please help! Find the distance to each destination in AU. Use the correct conversion factor.

Answers

Explanation:

The question involves converting from one unit (Kilometres) to another unit (Astronomical unit)

The relationship between both units is given as;

1 Km = 6.68459e-9 Au

Kulper belt

6.5 billion km = 6.5e9 Km

1 Km = 6.68459e-9 Au

6.5e9 Km = x

Solving for x;

x = 43.45 Au

Alpha Centauri

44 trillion km = 4.4e13

1 Km = 6.68459e-9 Au

4.4e13 km = x

Solving for x;

x = 294121.83 Au

what is in veins and artery

Answers

Answer:

the veins and arteries are the things that distribute blood throughout your body. There was a lot more blood in the arteries, that's making them very important and should not be cut ever. Veins on the other hand can be cut but you should still not cut them to begin with as if to not lose any blood. They distribute blood throughout your body that comes from your heart and helps muscles skeletal another systems of your body work.

Blood? I’m not 100% though


2 HCl (9)
=H2(g) + Cl2 (9)
K = [H][CI]/[HCI)
UK = [H][CI]/2[HCI]
K = 2[HC]/[H]CI.)
K = [HCI)?/[H][1]

Answers

Answer:

(K) = [H2] [Cl2]  /  [HCl]²

Explanation:

The equation of the reaction is given as;

2 HCl (g)  ⇔ H2 (g) + Cl2 (g)

The Equilibrium constant is the ratio of the concentration of the products and reactants raised to the power of their coefficients

Products =  H2 and Cl2

Reactants =  HCl

Equilibrium constant (K) = [H2] [Cl2]  /  [HCl]²

Identify the shape below:
PLEASE HELP

Answers

Answer:

linear angleee

Explanation:

lol i dont know what to put here

Answer:

B) Bent

There are a lot of types of bents but this one is linear bent.

How is the Methane on Titan similar to water on Earth?

Answers

Both in the phase of a liquid & has similar qualities like both molecules.
Saturn's largest moon Titan is the only world in our solar system besides Earth known to have bodies of liquid on its surface. ... It's now known that Titan's hydrologic cycle is surprisingly similar to Earth's, with one big exception: the liquid on Titan is liquid methane/ethane instead of water, due to the extreme cold.

PLEASE HELP: 60 POINTS

Select all that apply!

The emission of a Beta particle has the effect of:


a change in mass of an electron emitted from the nucleus
decreasing mass by one unit
increasing mass by one unit
adding a proton to the nucleus
converting 1 neutron to 1 electron and 1 proton

Answers

Answer:

all of they above

Explanation:

calculate the [H+] if the [OH-] is 7.34x10^-10
pls show work

Answers

[H+] if the [OH-] is 7.34x10^-10
Other Questions
Study the illustration below of the plate tectonics affecting the continent of Africa. Divergent plates are causing the East African Rift Zone to spread. This area is a deep valley surrounded by mountains, similar to a mid-ocean ridge. What do you predict will eventually happen at the East African Rift Zone? African plate tectonics showing the Eurasian Plate, Arabian Plate, Indian Plate and African Plate (Nubian) and (Somalian). A rift zone is shown extending from the edge of the Arabian Plate through the Indian Plate and extending into the African Plate (Somalian). 2015, Brooklyn College Lake Victoria will shrink and disappear as all of the plates converge. The African plate will grow larger as all of the plates converge. Water from the Gulf of Aden and the Indian Ocean will flow into the rift and flood the area. The Indian Ocean will shrink and disappear as the Rift Zone gets larger. select the correct anwser from the drop down menu.what equation has no solutionA. 13y + 2-2y = 10y + 3 - yB. 9 (3y + 7) - 2 = 3 ( - 9y + 9)C. 32.1y + 3.1 + 2.4y - 8.2 = 34.5y - 5.1D. 5 (2.2y + 3.4) = 5 (y - 2) + 6y Please help, I'm in trouble for not doing my homework, this is missing btw. First correct answer gets brainlist!!!!! Please help me on this factor if posible X/2-4X-12 Which statement about Egyptian, Chinese, Viking, Moche, and Roman jewelry is true?It had few symbolic images.Most jewelry was made of copper and pieces of glass and marble.It could have standard images made using formulas or be personalized.The common person wore the finest pieces of jewelry. Read and choose the correct option to complete the sentence.Marisa hizo ________ de cinco horas a pie y mir las estrellas por la noche. (1 point)un autobs tursticoun punto de referenciauna tienda de campaaun viaje por el da I NEED THIS ASAP!!!! LIKE RIGHT NOW I'LL GIVE BRAINLIEST!!!!Which statement explains what happens at the water table?Water rises to a place above the surface where people can collect it and use it for drinking water.Materials such as clay or granite prevent water from seeping into the ground at the water table.A boundary forms between an area filled with water and an area with both moisture and air.Water from rivers, lakes, and streams seeps into the ground and saturates it to reach the water table. (b) The student collects the H2(g) produced by the reaction and measures its volume over water at 298 K after carefullyequalizing the water levels inside and outside the gas-collection tube, as shown in the diagram below. The volume ismeasured to be 45.6 mL. The atmospheric pressure in the lab is measured as 765 torr, and the equilibrium vapor pressureof water at 298 K is 24 torr,4546GasWaterCalculate the following.() The number of moles of h2 produced in the reaction The process by which organisms with favorable traits pass them onto offspring is called...A. Mutations B. Natural selection C. Adaptations D. Fitness help pls asap!!! ill give brainliest Which skull bone is part of the facial bones and contains teeth? HELP THIS IS URGENT, ANSWER FOR BRAINLIEST A beetle was running along a number line...The the bug ran from 78 to 13. What distance did it cover?If it took the bug 5 seconds, what was its average speed? CaN Someone PLEAAASSEEE HELP ME!!!!! Line segmentAB has vertices A(3, 4) and B(1, 2). A dilation, centered at the origin, is applied to AB. The image has vertices A(1, 43) and B(13, 23).A: 1/6B: 1/3C: 3D: 6 WILL GIVE BRAINLYIST A stone pyramid in Egypt has a square base that measures 160 m on each side. The height is 91 m. What isthe volume of the pyramid? brainliest to right answer Rob, a college senior was given $10,000 by an aunt. Before she died, she toldRob to put the money to work and leave it alone, so that some day he couldleave money to his heirs. Rob is pumped. He has two great ideas, both of whichhe learned about on late-night TV. One is to buy foreclosure properties. Theother is to speculate in gold. The people on TV made a killing doing very littlework. Their DVD's will tell him all he needs to know. He asks you which soundsbetter to you.