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stich3 [128]
3 years ago
7

3. Given the Lewis electron-dot diagram:

Chemistry
1 answer:
madam [21]3 years ago
4 0

Answer:

1) the carbon and hydrogen valence electrons

Explanation:

The lewis dot diagram illustrates how electrons are arranged round atoms in a molecule. The dots represents the;

1) the carbon and hydrogen valence electrons

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8.45 cm - 3.55 cm = ?
lyudmila [28]

Answer:

4.9cm or 4.90cm

Explanation:

Use column method and align the numbers. Make sure you add the decimal point before you write the answer, otherwise the value would be wrong.

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What is the atomic mass of X ? Formula of the compound is XO3? Also identify the element X ? The molecular mass of XO3 is 80? (
djyliett [7]

Answer:

Explanation:

XO3

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6 0
3 years ago
What is the density of a book with a mass of 60g and a volume of 20 cm3?
Vaselesa [24]

Answer:

2.5 g/cm3 .

Explanation:

Density is mass in grams over volume in cubic centimeters. So it is 25 g 10 cm 3 =2.5 g/cm 3 The unit is grams per cubic centimeter. NB - density can also be kilograms over cubic meters Hope this helps!

6 0
3 years ago
D = 24 g/ml<br> v = 1200 ml<br> m = ?
8_murik_8 [283]

Answer:

<h2>28,800 g</h2>

Explanation:

The mass of a substance when given the density and volume can be found by using the formula

mass = Density × volume

From the question we have

mass = 24 × 1200

We have the final answer as

<h3>28,800 g</h3>

Hope this helps you

5 0
3 years ago
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