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3 years ago

What is the approximate mass of one mole of zinc?

Chemistry

1 answer:

VikaD [51]3 years ago

6 0

The answer is (a) 30g. Zinc = 30. 1 mole = 30 x 1 = 30g

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What is the empirical formula for a compound that has 1. 5 moles of copper and 0. 5 moles of phosphorus

astraxan [27]

The empirical formula for a compound that has
1.5 moles of copper and 0.5 moles of
phosphorus is CuP.

6 0

2 years ago

Bromine has two naturally occurring isotopes. Bromine-79 has a mass of 78.918 amu and is 50.69% abundant. Using the atomic mass

dsp73

Explanation:

Given parameters:

Mass of Br-79 = 78.918 amu

Abundance = 50.69%

Unknown:

Mass of Br - 81 = ?

Solution:

Relative Atomic mass of Br = 80

The proportion by which each fraction of an isotope occurs in nature is called the geonormal abundance.

RAM = Ma Ba + McBc

The formula above is used to find the average mass of the given isotopes.

Since we know the percentage abundance of Br-79, that of Br-81 = 100-50.69= 49.31%

RAM = Ma Ba + McBc

RAM = relative atomic mass

Ma Ba = mass and abundance of Br-79

McBc = mass and abundance of Br-81

80 = (78.918 x $\frac{50.69}{100}$ ) + ( $\frac{49.31}{100}$ x C)

80 = 40 + 0.49C

0.49C = 40

C = $\frac{40}{0.49}$ = 81.63amu

learn more;

Isotopes brainly.com/question/10862182

#learnwithBrainly

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3 years ago

How many charged particles in a hydrogen atom?

ikadub [295]

Hydrogen is the first element in the periodic table and only has one proton, one neutron, and one electron. The charge is zero but there are two charged particles.

5 0

4 years ago

Which salt is most soluble at 10°C?

serg [7]

Answer:

Explanation:

7 0

3 years ago

The Lewis structure for ethylene, C2H4, is shown. How many valence electrons do the two carbon atoms in the molecule share with

DochEvi [55]

So,

The Lewis structure for ethylene is two carbons double-bonded to each other, and two hydrogens single-bonded to each carbon atom.

Each bond symbolizes two shared valence electrons. Since the carbon atoms are double-bonded, they share four (4) valence electrons (the other electrons are in lower energy levels and do not appear because they typically don't react when higher energy-level electrons are on top of them).

4 0

3 years ago

Read 2 more answers