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oksian1 [2.3K]
3 years ago
14

Give two reasons why scientists use the scientific method

Chemistry
1 answer:
forsale [732]3 years ago
6 0
They use it because it's standerize and evidence vase
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What is the number of atoms per unit cell for each metal?<br> (c) Silver, Ag
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5 0
1 year ago
What is the mass of bromine gas if it has a pressure of 720 mmHg, volume of 25mL and a temperature of 18.3 degrees Celsius
Annette [7]

Answer:

             Mass = 0.158 g

Explanation:

Formula used,

P V = n R T

Or,

n = P V / R T

Putting values,

n = 0.948 atm . 0.025 L / 0.0821 L.atm.K⁻¹.mol⁻¹ . 291.45

n = 0.00099 mol

Note: we have changed pressure from mmHg to atm, volume from mL to L and temperature from C to K)

Also,

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Mass = 0.158 g

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