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Alexus [3.1K]
3 years ago
8

Help me pls help me please help me help me please help me pls

Chemistry
1 answer:
vladimir2022 [97]3 years ago
5 0

Answer:

6).synthesis reaction 7).

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What is the mass of 2.40 moles of magnesium chloride, mgcl2
LiRa [457]

Hey there!

MgCl₂

Find molar mass of magnesium chloride.

Mg: 1 x 24.305

Cl: 2 x 35.453

--------------------  

          95.211 grams

One mole of magnesium chloride has a mass of 95.211 grams.

We have 2.40 moles.

2.40 x 95.211 = 228.5

To 3 sig figs this is 229.

The mass of 2.40 moles of magnesium chloride is 229 grams.

Hope this helps!

4 0
3 years ago
What term is used to define when a substance reacts quickly with oxygen to produce light and heat?
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Explanation:

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7 0
3 years ago
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An isotope of cesium-137 has a half-life of 30 years. If 5.0g of cesium-137 decays over 60 years. How many grams will remain.
LenKa [72]

Answer:

1.25 gram of cesium-137 will remain.

Explanation:

Given data:

Half life of cesium-137 = 30 year

Mass of cesium-137 = 5.0 g

Mass remain after 60 years = ?

Solution:

Number of half lives passed = Time elapsed / half life

Number of half lives passed = 60 year / 30 year

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2 years ago
Best answer will be tagged brainliest.... no spamming pliz​
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\huge \mathcal \fcolorbox{cyan}{black}{ \blue{AnSweR}}

A. Chloride ions (CI)

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A jar of mixed nuts is a ________ mixture
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