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2 years ago

What do you use to determine molar mass?

Chemistry

1 answer:

levacccp [35]2 years ago

5 0

Answer:

the molar mass of any element can be determined by finding the atomic mass of the element on the periodic table for example, if the atomic mass of sulfer is 32.066 amu, then it's molar mass is 32.066 g / mol

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Fe2O3 + 3H2 --> 2Fe + 3H2O Is this right?

lesantik [10]

Answer:

3Fe2O3 + H2 --> 2Fe3O4 + H2O

7 0

2 years ago

According to the pattern of carbon and hydrogen atoms in alkenes, if a molecule has three carbon atoms, how many hydrogen atoms

Gekata [30.6K]

6.

Because the general formula for alkenes is CnH2n

4 0

2 years ago

Read 2 more answers

How many moles of helium are 8.84×10^24 atoms of He?

viva [34]

Answer:

14.77 mol.

Explanation:

It is known that every 1.0 mole of compound or element contains Avogadro's number (6.022 x 10²³) of molecules or atoms.

Using cross multiplication:

1.0 mole of He contains → 6.022 x 10²³ atoms.

??? mole of He contains → 8.84 x 10²⁴ atoms.

∴ The no. of moles of He contains (8.84 x 10²⁴ atoms) = (1.0 mol)(8.84 x 10²⁴ atoms)/(6.022 x 10²³ atoms) = 14.77 mol.

8 0

2 years ago

Is a pencil a compound or an element and is a pencil heterogeneous or homogeneous

masya89 [10]

Answer:

Pencil is an element and a heterogeneous mixture

Explanation:

6 0

3 years ago

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Which of the following statements best explains the observation that hydrogen fluoride has the highest boiling point of all the

olasank [31]

Answer:

c. HF can participate in hydrogen bonding.

Explanation:

The boiling points of substances often reflect the strength of the intermolecular forces operating among the molecules.

If it takes more energy to separate molecules of HF than of the rest of the hydrogen halides because HF molecules are held together by stronger intermolecular forces, then the boiling point of HF will be higher than that of all the hydrogen halides.

A particularly strong type of intermolecular attraction is called the hydrogen bond, which is a special type of dipole-dipole interaction between the hydrogen atom in a polar bond, such as N-H, O-H, or F-H, and an electronegative O, N, or F atom.

7 0

2 years ago