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larisa86 [58]
3 years ago
10

What are some of the uses of Rubidium?

Chemistry
1 answer:
tensa zangetsu [6.8K]3 years ago
3 0
It has many different uses like being used to make the tube of a vacuum cleaner and also can be used to make oil in space crafts.
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In which group of the periodic table do you find alkali metals?<br><br>A. 8A<br>B.2A<br>C.1A<br>D.7A
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c, 1A hope this helps


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Two chromate ions are contained in this compound. The “di” prefix means Two

Mono- one
Di- two
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2 years ago
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What is a cholesterol level of 1.85 g/l in the standard units of mg/dl?
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Cholesterol is  a sterol, it is a type of lipid molecule, and is biosynthesized by all animal cells. Total cholesterol level lesser than 200 milligrams per deciliter (mg/dL) is considered desirable for an adult. The standard unit used for any substance is gram per liter. However sometimes the concentration can also be expressed in terms of mg per deciliter. In this context 1 gram per liter is equal to 100 milligram per deciliter.

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3 years ago
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"Do you own a dog?" might be an example of which concept?
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3 years ago
The analysis of a compound gives the following percent composition by mass: C: 52.14 percent; H: 9.946 percent; S: 12.66 percent
wariber [46]

Answer:

C11H25SO4

Explanation:

The total mass of the compound is 253.4 g, so, the mass of each element will be:

C: 52.14% of 253.4 = 0.5214x253.4 = 132.12 g

H: 9.946% of 253.4 = 0.09946x253.4 = 25.20 g

S: 12.66% of 253.4 = 0.1266x253.4 = 32.08 g

O: 25.26% of 253.4 = 0.2526x253.4 = 64.00 g

The molar mass are: C = 12 g/mol, H 1 g/mol, S = 32 g/mol, and O = 16 g/mol

So, to know how much moles will be, just divide the mass calculated above for the molar mass:

C: 132.12/12 = 11 moles

H: 25.20/ 1 = 25 moles

S: 32.08/32 = 1 mol

O: 64.00/16 = 4 moles

So the molecular formula is C11H25SO4

3 0
2 years ago
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