4 years ago

How do scientists design a system?

Chemistry

1 answer:

Shtirlitz [24]4 years ago

3 0

Answer: D

Explanation:

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3 years ago

A procedure calls for 0.250 kg of sugar. Your balance is in ounces. What mass in ounces should be weighed out on this balance?

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8.81849

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Masja [62]

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B. Angle BOA

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3 years ago

as a gas occupied a volume of 250cc at 250at 700mm pressure temperature,25degree Celsius what additional pressure is required?re

Allisa [31]

Additional pressure required : 175 mm

<h3>Further explanation</h3>

Boyle's Law

At a constant temperature, the gas volume is inversely proportional to the pressure applied

$\rm p_1V_1=p_2.V_2\\\\\dfrac{p_1}{p_2}=\dfrac{V_2}{V_1}$

V₁=250 ml

P₁=700 mmHg

$\tt V_2=\dfrac{4}{5}\times 250=200~ml$

$\tt P_2=\dfrac{P_1.V_1}{V_2}\\\\P_2=\dfrac{700\times 250}{200}=875~mmHg$

Additional pressure :

$\tt 875-700=175~mm$

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3 years ago