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LekaFEV [45]
3 years ago
14

How can i solve this formula

Chemistry
1 answer:
Dima020 [189]3 years ago
8 0

Answer:

K2 Cr2 O7 is the empirical formula

Explanation:

Assume we have 100 g of the compound, because it makes the number of grams equal to the percentage.

Then convert grams of each element into moles

Then divide the moles of each element by the smallest number of moles attained to get the whole number mole ratios of the empirical formula

However, if you don't get whole numbers when you divide by the smallest number of moles, then multiply all moles by one common factor that  makes them all whole numbers.

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Natasha2012 [34]

Answer:

ridge push and slab pull

Explanation:

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6 0
3 years ago
ICI(g) + Cl₂(g) → ICl3(s). The AG(f) of ICI(g) is -5.5 kJ/mol and the
DENIUS [597]

Answer:

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3 0
2 years ago
234+34.1 add and round to 2 significant figures
marin [14]
Like this? 234+34.1= 268.1 then round. If it is less than 5 then you round down if it is more then you round up. Because it is less the final number would be 268.1=268
3 0
4 years ago
2C4H10 + 13 02 -- 8 CO2 + 10H20
Anika [276]

Answer:

Option 1. 0.55 mol of C₄H₁₀

Explanation:

The reaction is:

2C₄H₁₀ + 13O₂ → 8 CO₂ + 10H₂O

This is a combustion reaction where carbon dioxide and water are produced.

We convert mass of produced water to moles → 50 g / 18 g/mol = 2.78 moles of water.

The stoichometry states that:

10 moles of water are made by 2 moles of C₄H₁₀

Therefore 2.78 moles of water will be made by (2.78 . 2) / 10 = 0.55 mol of C₄H₁₀

4 0
3 years ago
Read 2 more answers
Someone help me pleasee?
Kamila [148]
Maybe its the second one
7 0
3 years ago
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