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Aneli [31]
3 years ago
10

A sample of an unidentified compound contains 29.84% sodium, 67.49% chromium, and 72.67% oxygen. What is the compound's empirica

l formula? If the molar mass of the molecular formula is 523.96 g/mol, find the molecular formula.
Empirical Formula:
Molecular Formula:​
Chemistry
1 answer:
vladimir1956 [14]3 years ago
5 0

Answer:

i would help i just dont know sorry

Explanation:

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Napisz równania reakcji chemicznych w formie cząsteczkowej, jonowej i jonowej skróconej. Podkreśl wzory soli trudno rozpuszczaln
Ierofanga [76]

Answer:idioma equivocado ????

Explanation:

3 0
4 years ago
How many grams of water can be produced from 10 moles of hydrogen gas?
Veseljchak [2.6K]
10 moles of H2 reacts with 5 moles of O2 creating 10 moles of water.
Water has the molar mass 18 g/mole
10 · 18g = 180 g 
180 g of water can be produced from 10 moles of hydrogen gas.
8 0
4 years ago
What initial temperature of the copper metal which equal to the temperature of the coffee?
Alekssandra [29.7K]
It is this because it is okay
6 0
3 years ago
A dark grey rock has a mass of 80 grams. When dropped in water, it makes the water level rise from 70 mL to 90 mL. What is the d
podryga [215]

Answer:

I don't remember how to label it, but it is 20.

Explanation:

The answer is 20 because once you dat the rock in the water, that is how much it changed.

5 0
3 years ago
Read 2 more answers
For Lewis acids and bases, the base is defined as an electron pair donor / acceptor (circle the correct answer).
damaskus [11]

Answer: electron donor.

Explanation:

According to Arrhenius concept, a base is defined as a substance which donates hydroxide ions (OH^-) when dissolved in water and an acid is defined as a substance which donates hydronium ions (H_3O^+) in water.

According to the Bronsted Lowry conjugate acid-base theory, an acid is defined as a substance which donates protons and a base is defined as a substance which accepts protons.

According to the Lewis concept, an acid is defined as a substance that accepts electron pairs and base is defined as a substance which donates electron pairs.

NH_3+H^+\rightarrow NH_4^+

Here NH_3 acts as lewis base and H^+act as lewis acid.

Thus lewis base is defined as an electron pair donor.

8 0
4 years ago
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