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raketka [301]
2 years ago
9

Gravitational force is dependent upon a. the distance and mass

Chemistry
1 answer:
Shtirlitz [24]2 years ago
3 0

A.) mass and distance.

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According to the Arrhenius equation, changing which factors will affect the
slamgirl [31]

Answer:

e−(Ea/RT): the fraction of the molecules present in a gas which have energies equal to or in excess of activation energy at a particular temperature

6 0
3 years ago
___∆ 1. Erosion is / is not caused by water, ice, wind, chemicals, and sand. (pick one)
svlad2 [7]

Answer:

1. Chemicals

2. Erosion

3. Solids

4. Expands

5. Chemical

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Explanation:

7 0
3 years ago
A 4.86-gram sample of calcium reacted completely with oxygen to form 6.80 grams of calcium oxide. This reaction is represented b
sesenic [268]
The number of mole of Ca reacted is:
4.86 g Ca/ (40.08 g/mol Ca)= 0.121 mol Ca

Because Ca reacted completely with oxygen and there is 2 mol Ca, there is 1 mol O2 reacted.

Total mass of oxygen that reacted is:
0.121 mol Ca* (1mol O2/ 2 mol Ca)* (32 g O2/ 1 mol O2)= 1.94 g O2 reacted.

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8 0
3 years ago
A student tests the pitch of different-sized rubber bands by stretching them around a box and then plucking them. What pitch doe
Nostrana [21]

Answer:

your answer will be C

Explanation:

remember low souunds carry sound waves farther than high pithed sounds.

4 0
3 years ago
PLEASE HELP ME!!! ASAP
shtirl [24]

Answer:

Theoretical yield of the reaction = 34 g

Excess reactant is hydrogen

Limiting reactant is nitrogen

Explanation:

Given there is 100 g of nitrogen and 100 g of hydrogen

Number of moles of nitrogen = 100 ÷ 28 = 3·57

Number of moles of hydrogen = 100 ÷ 2 = 50

Reaction between nitrogen and hydrogen yields ammonia according to the following chemical equation

N2 + 3H2 → 2NH3

From the above chemical equation for every mole of nitrogen that reacts, 3 moles of hydrogen will be required and 2 moles of ammonia will be formed

Now we have 3·57 moles of nitrogen and therefore we require 3 × 3·57 moles of hydrogen

⇒ We require 10·71 moles of hydrogen

But we have 50 moles of hydrogen

∴ Limiting reactant is nitrogen and excess reactant is hydrogen

From the balanced chemical equation the yield will be 2 × 3·57 moles of ammonia

Molecular weight of ammonia = 17 g

∴ Theoretical yield of the reaction = 2 × 3·57 × 17 = 121·38 g

5 0
3 years ago
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