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BlackZzzverrR [31]
3 years ago
6

If 39.0 g of MgSO4⋅7H2O is thoroughly heated, what mass of anhydrous magnesium sulfate will remain?

Chemistry
1 answer:
pashok25 [27]3 years ago
4 0
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When using the process of evaporation to separate a mixture, what is left behind
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When a solution is heated, the solvent evaporates, leaving behind the dissolved solids as residue. When a solution containing dissolved solutes is heated, the solvent will evaporate. Only the solute will remain in the evaporating dish.

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If an object has a density of 4.2 g/mL, what is its density in hg/L?
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I believe "h" stands for hecta-, which means "one hundred."

I will convert from g to hg (divide by 100), then from mL to L (multiply by 1000).

\frac{4.2g}{mL}*\frac{1hg}{100g}*\frac{1000mL}{1L}=42\frac{hg}{L}

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3 years ago
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when positively charged particles were radiated onto a gold atom, most of the particles went straight past. what is most likely
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19. What is Beryllium's spin ?
s2008m [1.1K]

Answer:

Nuclear properties

Naturally occurring beryllium, save for slight contamination by the cosmogenic radioisotopes, is isotopically pure beryllium-9, which has a nuclear spin of 3/2.Beryllium is alloyed with copper or nickel to make springs, gyroscopes, electrical contacts, spot-welding electrodes and non-sparking tools, according to the Royal Society of Chemistry. Other beryllium alloys are used in high-speed aircrafts and missiles, as well as spacecraft and communication satellites.

Explanation:

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Which state of matter has neutral particles that bounce off one another as they collide? A: Gas B: Liquid C: Plasma D: Solid ​
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Gas

Explanation:

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