3 years ago

Which of the following is an anion?

Chemistry

1 answer:

satela [25.4K]3 years ago

5 0

A . O2- because it is a negatively charged ion

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What contains most of earths water

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The ocean hold 97 percent of earths water.

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3 years ago

Part A

PilotLPTM [1.2K]

Answer:

4200ml

Explanation:

Converting 3.1kg to g

3.1*1000= 3100g

Since density = mass/volume, then

volume = mass/ density

Therefore volume = 3100/0.74

= 4189.2ml

converting it to two significant figures

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2 years ago

Which is the formula for dinitrogen pentoxide?

nadya68 [22]

Answer:

N2O5

Explanation:

IUPAC ID: Dinitrogen pentoxide

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Density: 1.64 g/cm³

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3 years ago

A sample of N2(g) was collected over water at 25°C and 730 torr in a container with a volume of 340 mL. The vapor pressure of wa

AnnZ [28]

Answer:

D. 0.36 g

Explanation:

When a gas is collected over water, the total pressure is the sum of the pressure of the gas and the pressure of the water vapor.

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PN₂ = Ptotal - Pwater = 730 torr - 23.76 torr = 706 torr

We can find the mass of N₂ using the ideal gas equation.

$P.V=n.R.T=\frac{m}{M} .R.T\\m=\frac{P.V.M}{R.T} =\frac{730torr.0.340L.28g/mol}{(0.08206atm.L/mol.K).298K} .\frac{1atm}{760torr} =0.36g$

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3 years ago

If a substance has a ph of 3, what is it

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It is is then referred to as Acidic

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3 years ago

Read 2 more answers