4 years ago

1. Which weather instrument is used to measure air temperatures recorded on a weather

Chemistry

2 answers:

poizon [28]4 years ago

5 0

Answer:

3. Thermometer

miskamm [114]4 years ago

4 0

The correct answer is thermometer.

Most thermometers are closed glass tubes containing liquids such as alcohol or mercury. When air around the tube heats the liquid, the liquid expands and moves up the tube. A scale then shows what the actual temperature is.

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3 years ago

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2. Which shapes are most likely to be polar?

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A square and rectangle because they are parcélele

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3 years ago

What volume does 1.70 ×10–3 mol of chlorine gas occupy if its temperature is 20.2 °C and its pressure is 795 mm Hg?

Cerrena [4.2K]

Explanation:

The given data is as follows.

No. of moles = $1.70 \times 10^{-3}$ , V = ?

T = 20.2 + 273 K = 293.2 K, P = $\frac{795 mm Hg}{760.0 mm Hg/atm}$ = 1.046 atm, R = $0.0821 L atm K^{-1}mol ^{-1}$

Calculate the volume using ideal gas equation as follows.

P V = n R T

$1.046 atm \times V = 1.70 \times 10^{-3} \times 0.0821 L atm K^{-1}mol ^{-1} \times 293.2 K$

V = $\frac{1.70 \times 10^{-3} \times 0.0821 L atm K^{-1}mol ^{-1} \times 293.2 K}{1.046 atm}$

= $\frac{40.921 L atm}{1.046 atm}$

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Thus, we can conclude that volume of the gas is $39.122 \times 10^{-3}$ L.

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3 years ago

PLEASE HELP ME ASAP What is the volume of 28.9 g of mercury if the density is 13.8 g/mL? *

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Answer:

2.09 mL

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density = mass/volume

13.8 = 28.9/v

13.8v = 28.9

v = 2.09 mL

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3 years ago