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Karo-lina-s [1.5K]
2 years ago
11

Please help I’ll mark you as brainliest if correct!

Chemistry
1 answer:
Brums [2.3K]2 years ago
8 0

Answer:

C.

Explanation:

Gas molecules are diatomic which means it usually comes in 2.

So, H2(g)+O2(g) is H2O (l)

The first one is OH(hydroxide, not water)

Second one is not gas(not diatomic)

Answer is C.

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According to collision theory, the rate of reaction depends on atoms colliding in the correct _________ with enough ________ for
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Answer: orientation , energy , frequency

Explanation:

According to the collision theory , the number of collisions that take place per unit volume of the reaction mixture is called collision frequency. The effective collisions are ones which result into the formation of products.

Effective collisions depends on the following  two factors:-

1. Orientation factor: The colliding molecules must have proper orientation at the time of collision to result into formation of products.

2. Energy factor:  For collision to be effective,  the colliding molecules must have energy more than a particular value called as threshold energy.

4 0
3 years ago
What is the independent variable, and the dependent variable in this?
Doss [256]

Answer:

The salt and sugar as well as the baby power and granulated sugar are the independent variables.

The dependent variable is how it reacts (will it dissolve or not)

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5 0
2 years ago
Read 2 more answers
Calculate the volume occupied by 272g
cupoosta [38]

The answer for the following problem is mentioned below.

<u><em>Therefore volume occupied by methane gas is  184.78 × 10^-3 liters </em></u>

Explanation:

Given:

mass of methane(CH_{4}) = 272 grams

pressure (P) = 250 k Pa =250×10^3 Pa

temperature(t) = 54°C =54 + 273 = 327 K

Also given:

R = 8.31JK-1 mol-1 ,

Molar mass of  methane(CH_{4}) = 16.0​  grams

We know;

According to the ideal gas equation,

<u><em>P × V = n × R × T</em></u>

here,

n = m÷M

n =272 ÷ 16

<u><em>n = 17 moles</em></u>

Therefore,

250×10^3 × V = 17 × 8.31 × 327

V = ( 17 × 8.31 × 327 ) ÷ ( 250×10^3 )

V = 184.78 × 10^-3 liters

<u><em>Therefore volume occupied by methane gas is  184.78 × 10^-3 liters </em></u>

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6 0
2 years ago
A physical change _____ change the composition or identity of the substance. will will not 2. An example of a physical change is
Sav [38]

Answer:

not sure

Explanation:

a physical change (can)change.,....

6 0
3 years ago
A balloon is filled with 2000 mL of air at a pressure of 2 atm. What is the volume of the balloon if the pressure is
artcher [175]

Answer:

800mL

Explanation:

Using Boyle's law which states that the volume of a given mass of gas is inversely proportional to the pressure, provided temperature remains constant

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V2 = 4000 ÷ 5

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I hope this was helpful, please mark as brainliest

6 0
3 years ago
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