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lisov135 [29]
3 years ago
8

Which step in the scientific method has an if/then statement

Chemistry
1 answer:
kiruha [24]3 years ago
7 0

independent and dependent variables.

1)

Now it's time to state your hypothesis. ...

2) The hypothesis is often written using the words "IF" and "THEN." For example, "If I do not study, then I will fail the test." The "if' and "then" statements reflect your independent and dependent variables.

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If 120.3 mL of water is shaken with oxygen gas at 2.1 atm, it will dissolve 0.0043 g O2. Estimate the Henry's law constant for t
nikklg [1K]

<u>Answer:</u> The Henry's law constant for oxygen gas in water is 1.702\times 10^{-5}g/mL.atm

<u>Explanation:</u>

To calculate the molar solubility, we use the equation given by Henry's law, which is:

C_{O_2}=K_H\times p_{O_2}

where,

K_H = Henry's constant = ?

C_{O_2} = solubility of oxygen gas = 0.0043g/120.3mL

p_{O_2 = partial pressure of oxygen gas = 2.1 atm

Putting values in above equation, we get:

0.0043g/120.3mL=K_H\times 2.1atm\\\\K_H=\frac{0.0043g}{120.3mL\times 2.1atm}=1.702\times 10^{-5}g/mL.atm

Hence, the Henry's law constant for oxygen gas in water is 1.702\times 10^{-5}g/mL.atm

7 0
3 years ago
What is the atomic mass of<br> an atom?
Alborosie

Answer:

1 unit

Explanation:

It is expressed as a multiple of one-twelfth the mass of the carbon-12 atom, 1.992646547 × 10−23 gram, which is assigned an atomic mass of 12 units.

1/12 * 12 = 1. I think so.

4 0
3 years ago
1. The two qualities used to describe winds are________ and speed. 2. a local wing that blows during the day from an ocean towar
Mazyrski [523]
<span>1. The two qualities used to describe winds are direction and speed.
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4. Temperature differences between the equator and poles produce convection currents.
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To vaporize/condense a substance, does the substance have to absorb or release heat?
lilavasa [31]

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Explanation:

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3 years ago
The Law of Superposition states
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In an undisturbed sequence of layers of rocks, the younger layers lie on top of the older layers
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