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miss Akunina [59]
3 years ago
9

What is the percent by mass of magnesium sulfate in MgSO4 · 7H2O?

Chemistry
1 answer:
ad-work [718]3 years ago
5 0
The breakdown of mass percentage of the elements is determined by dividing molar masses to the total molar mass of the compound (246.37 g/mol). There are four elements: for Mg: 9.87%, S:13.01%, H:5.69%, 71.44%. 
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Tai ran from his home to a position 300 m south of his home in 100 seconds. What was his velocity?
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3 years ago
The energy of colored light increases in the order red, yellow, green, blue, violet.List the metallic elements used in the flame
Vinil7 [7]

Answer:

Explanation:

Flame test:

The metals ions can be detected through the flame test. Different ions gives different colors when heated on flame. Tom perform the flame test following steps should follow:

1. Dip a wire loop in the solution of compound which is going to be tested.

2. After dipping put the loop of wire on bunsen burner flame.

3. Observe the color of flame.

4. Record the flame color produce by compound

Color produce by metals:

Red = Lithium, zirconium, strontium, mercury, Rubidium (red violet)

Orange-red = calcium

Yellow = sodium, iron (brownish yellow)

Green = green

Blue = cesium. arsenic, copper, tantalum, indium, lead

Violet = potassium (lilac)

3 0
4 years ago
What does the root “thermal” mean?<br> Please Help<br> I will give you Brainliest
Nezavi [6.7K]

Answer:

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Explanation:

hope it helps :)

7 0
3 years ago
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