3 years ago

A civil engineer chooses to use wooden beams because they will sag before

Chemistry

2 answers:

beks73 [17]3 years ago

8 0

Answer:

APEX

Explanation:

wolverine [178]3 years ago

7 0

Answer:

B. choosing a material that will show warning before it fails.

Explanation:

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Tokyo, Japan is 8817.6 km from California. how many millimeters is this? answer in scientific notation.

vitfil [10]

Answer:

$d=8.817\times 10^9\ mm$

Explanation:

It is given that,

Japan is 8817.6 km from California. We need to convert this distance in millimeters.

We know the conversion from km to mm is as follows :

1 km = 1000000

To convert mm km to mm use the unitary method as follows :

8817.6 km = 8817.6 × 1000000

$d=8.817\times 10^9\ mm$

Hence, the distance between Japan and California $8.817\times 10^9\ mm$ .

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3 years ago

There are 6.022 x 10^23 atoms of Hg in 1 mole of Hg. The number of atoms in 4.5 moles of Hg can be found by multiplying 4.5 by 6

serious [3.7K]

Answer:

D. 27.099 x 10²³.

Explanation:

It is known that every 1.0 mole of an atom contains Avogadro's no. (6.022 x 10²³) atoms.

<em>So, 4.5 mol of Hg will contain:</em>

(4.5 mol)(6.022 x 10²³) = 27.099 x 10²³ atoms.

<em>So, the right choice is: D. 27.099 x 10²³.</em>

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3 years ago

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Calculate the pH if the [OH-] concentration is 5.9x10-1 M.

ANEK [815]

Ph—1.763
Oh-58
Answers

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2 years ago

Which of the following is an example of a chemical reaction?

grandymaker [24]

Answer:

D: dissolving salt in water

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2 years ago

How many molecules are there in 10 grams of N2I6?

Anni [7]

10g/ 763g/mol= 0.013moles

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2 years ago