3 years ago

Wich describes an object in projectile motion?

Chemistry

1 answer:

statuscvo [17]3 years ago

3 0

Answer:

Hey, I'll help but I don't know what your options are.

Explanation:

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its atomic number will be 3 and it's mass number will be 7. it is lithium

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2 years ago

Determine the mass in grams of 4.69 x 1021 atoms of barium. (The

Virty [35]

Answer:

1.07 g Ba

Explanation:

Hello there!

In this case, according to the definition of the Avogadro's number and the molar mass, it is possible to say that 6.022x10^{23} atoms of barium equal one mole, and at the same time, 1 mole equals 137.327 grams of this element; thus, it is possible to say that 6.022x10^{23} atoms of barium have a mass of 137.327 grams; therefore, it i possible for us to calculate the required mass in grams as shown below:

$4.69x10^{21}atoms*\frac{137.327gBa}{6.022x10^{23} atoms} \\\\=1.07gBa$

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Perform the following calculations and express the answer with the proper significant

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The answer is

210.6+14.57=225.17mm.

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lord [1]

I completely understand your gripe. I also believe that you are the better option. It will only take time until she is yours, despite your parent's views. Keep it up

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