3 years ago

Corrosive substances are rarely harmful to human skin. True or false?

Chemistry

1 answer:

maxonik [38]3 years ago

8 0

False

The adjective corrosive means it will definitely harm the skin

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How many electrons are present in 4He2+?

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4 and 2 electrons are present.

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4 NH3 + 7 O2 → 4 NO2 + 6 H2O What is the mole ratio between oxygen and nitrogen dioxide? 7 moles to 6 moles 4 moles to 6 moles 7

Mashutka [201]

Answer:

7:4

Explanation:

O2 : NO2

7 : 4

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3 years ago

Which of the following BEST describes a process by which metamorphic rock becomes igneous rock?

RideAnS [48]

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2 years ago

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MgNH4PO4•6H2O loses H2O in a stepwise fashion as it is heated. Between 40 degrees celsius and 60 degrees celsius, the monohydrat

tino4ka555 [31]

Answer:

$\%\ Composition\ of\ phosphorus=20.00\ \%$

Explanation:

The molecular formula of the monohydrate formed = $MgNH_4PO_4.H_2O$

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So, Mass = 24 + 14 + 6 × 1 + 5 × 16 = 155 g

Mass of phosphorus = 31 g

Thus,

$\%\ Composition\ of\ phosphorus =\frac{Mass_{phosphorus}}{Total\ mass}\times 100$

$\%\ Composition\ of\ phosphorus=\frac{31}{155}\times 100$

$\%\ Composition\ of\ phosphorus=20.00\ \%$

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3 years ago

Is it always easy to classify research as applied or pure? Explain.

Luda [366]

No..since research can take different format

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3 years ago