4 years ago

Get Organized! A Periodic Table WebQuest

Chemistry

1 answer:

netineya [11]4 years ago

5 0

<h2>Answer:</h2>

What does Atomic number represents ___________.

What does the Mass number represent ___________

Periods are _____________ rows.

Groups are _____________ columns.

Total elements in periodic table are _____________.

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If the total mass of the products of a reaction is 90 gram, what was the total mass of the reactants

Marizza181 [45]

90 grams due to laws of conservation of mass. Output mass = input mass. Mass can never be created or destroyed.

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3 years ago

Engine size is measured by how much air the cylinders displace. A 1996 Pontiac V8 has an engine size of 316.6 cubic inches. What

inna [77]

The size of this engine in cubic meters is $0.0052 m^{3}$ .

<u>Explanation:</u>

As it is stated that engine size can be measured depending upon the amount of air the cylinders displace, it is also stated that the engine of model Pontiac V8 has a size of 316.6 cubic inches. The problem is to convert the size of engine in cubic meters. We know that 1 inch = 0.0254 m.

Then $1 inch^{3}=(0.0254)^{3} m^{3}$

As here the size of engine is 316.6 cubic inches, then in metres it will be

$316.6 \text { inches }^{3}=316.6 \times(0.0254)^{3} \mathrm{m}^{3}=0.0052 \mathrm{m}^{3}$

Thus, the size of the engine in cubic meters will be $0.0052 m^{3}$ .

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4 years ago

if you are curious at to why so many of ur family members have certain hair or eye color, you might want to look at... A. Astrol

densk [106]

Answer:

c) hereditary

Explanation:

This means that if your parents had one eye colour, you'll most likely have the same one because you share the same genes, and it's passed down to you.

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3 years ago

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What is a pure substance - bread, salt, seawater, or soil?

miv72 [106K]

Answer:

Salt is the pure substance out of them all.

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How many grams of Lead(II) nitrate are present in 150.0 mL of an Lead(II) nitrate solution that is 0.07268 M?

Lana71 [14]

Hey...
Use the molarity formula
M=moles/L and then convert to grams

0.07268*0.15=moles
<span>0.010902 mol
</span>Pb(NO3)2
1 mole=331.22g
0.010902 moles=

3.61 g

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4 years ago