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3 years ago

PLS ANSWER FAST AHAH distilled water is a pure substance true or false ?

Chemistry

1 answer:

mr Goodwill [35]3 years ago

3 0

Answer:

True

Explanation:

If you see distilled water, it's a pure substance. That means that there are only water molecules in the liquid. A mixture would be a glass of water with other things dissolved inside, like one of those powders you take if you get sick or Kool-Aid.

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The theory of continental drift was widely unaccepted until scientists started using ________ the map the ocean floor.

Bumek [7]

Answer:

B. SONAR (Sound Navigation Ranging)

Explanation:

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A student balanced the chemical equation Mg + O2 →MgO by writing Mg + O2 → MgO2. Was the equation balanced correctly? Explain yo

Amanda [17]

Explanation:

Charges on both magnesium and oxygen is 2. Though opposite in sign, they have equal charges so, both of them will be cancelled by each other.

As a result, formula of magnesium oxide is MgO and not $MgO_{2}$ .

The student write the equation as $Mg + O_2 \rightarrow MgO_2$ , it is not correct.

Therefore, given equation will be balanced as follows.

$2Mg + O_{2} \rightarrow 2MgO$

Since, number of atoms on both reactant and product side are equal. Hence, this equation is completely balanced.

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3 years ago

How does the amount of carbon dioxide affect the rate of photosynthesis?

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Answer:

An increase in the carbon dioxide concentration increases the rate at which carbon is incorporated into carbohydrate in the light-independent reaction, and so the rate of photosynthesis generally increases until limited by another factor.

Explanation:

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2 years ago

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Mass box A = 10 grams; Mass box B = 5 grams; Mass box C—made of one A and one B How many boxes of B would be required to make 30

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Mass box C is 10+5. (So C is 15)

But if C was 30, how many times could you put B (5) into it?

30/5 = 6

You would need 6 boxes of B to make 30 grams of C.

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A intramuscular medication is given at 5.00mg/kg of body weight. What is the dose in grams for a 180-lb patient?

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0.408 gram for 180-lb patient

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