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3 years ago

Compare the densities of hydrogen, oxygen, and water.

Chemistry

1 answer:

riadik2000 [5.3K]3 years ago

8 0

Answer:

Water is a compound made up of two elements—hydrogen and oxygen. ... They are both colorless, odorless gases , and they both readily react with other elements—making them "reactive" elements. But in many ways they are very different from each other. Hydrogen has the lowest density of all the elements.

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11mg of cyanide per kilogram of body weight is lethal for 50% of domestic chickens. How many grams per kilogram of body weight i

Nookie1986 [14]

Answer:

$0.033g$

Explanation:

Hello,

In this case, since 11 mg per kilogram of body weight has the given lethality, the mg that turn out lethal for a chicken weighting 3 kg is computed by using a rule of three:

$11mg\longrightarrow 1kg\\\\x\ \ \ \ \ \ \longrightarrow 3kg$

Thus, we obtain:

$x=\frac{3kg*11mg}{1kg}\\ \\x=33mg$

That in grams is:

$=33mg*\frac{1g}{1000mg} \\\\=0.033g$

Regards.

7 0

3 years ago

4 points 9. Name the scientists that played a major role in the development of cell theory. *

jeyben [28]

The answer would be Theodore Schwann, Matthias Jakob Schleiden and Rudolf Virchow(he contributed but is not credited)

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3 years ago

What is hydrogen gas

UkoKoshka [18]

Hydrogen is the smallest elements , with one potron and one electron .it is highly abundant no has unique and important chemicals properties .

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3 years ago

Read 2 more answers

The first energy shell around a nucleus can hold _______ electrons. The second energy shell can hold ________.

Bond [772]

Hi there,

I hope you and your family are staying safe and healthy!

The correct answer is C

Each shell can contain only a fixed number of electrons. The first energy shell around a nucleus can hold up to 2 electrons. Then the second shell can hold up to 8 eletrcons.

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Best,

~Gary

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2 years ago

What represents a community? pond B a snail snails D snails, guppies and plants

OLga [1]

D snails, guppies and plants. The community should be diverse and have lots of biodiversity.

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3 years ago