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Mariulka [41]
3 years ago
8

A man weighing 48 N climbs 82.0 meter ladder how much work is done

Chemistry
1 answer:
Karolina [17]3 years ago
3 0

Heeeyyyyyyyy........

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How many protons are in the nucleus of a lithium atom in its excited state
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the answer is three protons

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All of the alkali earth metals, Group 2, have two valence electrons. Which of these would represent the oxidation number of the
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Since Group 2 alkali earth metals have 2 valence electrons, they tend to lose those 2 when forming ionic bonds. And the Loss of Electrons = Oxidation (L.E.O. for short). Therefore this group, including Mg and Ca, have an oxidation of [+2].
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5 0
3 years ago
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Please help me with this question!! read the photo
pishuonlain [190]

There are 1.92 × 10^23 atoms Mo in the cylinder.

<em>Step 1</em>. Calculate the <em>mass of the cylinder </em>

Mass = 22.0 mL × (8.20 g/1 mL) = 180.4 g

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Mass of Mo = 180.4 g alloy × (17.0 g Mo/100 g alloy) = 30.67 g Mo

<em>Step 3</em>. Convert <em>grams of Mo</em> to <em>moles of Mo </em>

Moles of Mo = 30.67 g Mo × (1 mol Mo/95.95 g Mo) = 0.3196 mol Mo

<em>Step 4</em>. Convert <em>moles of M</em>o to <em>atoms of Mo </em>

Atoms of Mo = 0.3196 mol Mo × (6.022 × 10^2<em>3</em> atoms Mo)/(1 mol Mo)

= 1.92 × 10^23 atoms Mo

7 0
2 years ago
WILL MARK BRAINLIEST IF YOU ANSWER WITHIN 5 MINUTES
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This is and ADDITION REACTION

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Because your putting a compound and an element together

6 0
3 years ago
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