3 years ago

When water boils and evaporates, it reaches what temperature?

Chemistry

1 answer:

Alexandra [31]3 years ago

3 0

Its boiling point is 212^F or 100^C

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Help How many atoms of hydrogen(gas) form if 10 grams of aluminum react? 2Al + 6HCl = 2AlCl3 + 3H2

arlik [135]

Answer: 3.35x10²³atoms H2

Explanation: solution attached:

Convert mass of Al to moles

Do the mole to mole ratio between Al and H2

Convert moles of H2 to atoms using Avogadro's number.

4 0

3 years ago

Which total mass is the smallest?

andreev551 [17]

The mass of electrons, protons, and neutrons:
electrons 9.10938291*10^-31 kg
protons 1.67262178*10^-27 kg
neutrons 1.6749*10^-27 kg
the mass of electrons is way smaller than both, the mass of protons and neutrons
therefore, 1) the mass of 2 electrons is the smallest

8 0

3 years ago

5. Which are generally less soluble, compounds with chlorate ions or carbonate ions?

Vitek1552 [10]

Answer:

Compounds with Carbonate ions are less soluble than the compounds with Chlorate ions.

Explanation:

The reason is that the compounds with carbonate ions have less attraction between positive and negative charges. (Solvation)

7 0

3 years ago

What is the mass in grams of 120 liters at STP oh He gas

skad [1K]

The mass of He gas = 21.428 g

<h3>Further explanation</h3>

Given

120 liters of He gas

Required

the mass in grams

Solution

Conditions at T 0 ° C and P 1 atm are stated by STP (Standard Temperature and Pressure). At STP, Vm is 22.4 liters/mol.

Mol for 120 L :

$\tt \dfrac{120}{22.4}=5.357~moles$

Mass of He gas(MW=4 g/mol) :

$\tt mass=mol\times Ar\\\\mass=5.357\times 4=21.428~g$

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2 years ago

Answer fast, please. Match the following chemical reactions with the correct word choices

brilliants [131]

Answer:

I could help you but I need to do it on a separate paper/document

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3 years ago