2 years ago

Everything in group 2 on the periodic table are called

Chemistry

1 answer:

Ludmilka [50]2 years ago

3 0

Answer:

group two elements are called alkaline earth metals

Explanation:

Because their oxides form in the earth and are water soluble

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How many moles of N2 in 57.1 g of N2?

SpyIntel [72]

We are given –

Mass of $\bf N_2$ is 57.1 g and we are asked to find number of moles present in 57.1 g of $\bf N_2$

$\qquad$ $\pink{\bf\longrightarrow { Molar \:mass \:of \: N_2:-} }$

$\qquad$ $\bf \twoheadrightarrow 14\times 2$

$\qquad$ $\bf \twoheadrightarrow 28$

$\qquad$ ____________________

Now,Let's calculate the number of moles present in 57.1 g of $\bf N_2$

$\qquad$ $\purple{\bf\longrightarrow { No \:of \:moles = \dfrac{Given \:mass}{Molar\: mass}}}$

$\qquad$ $\bf \twoheadrightarrow \dfrac{57.1}{28}$

$\qquad$ $\bf \twoheadrightarrow 2.04\: moles$

__________________________________

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1 year ago

PLEASES HELP ASAP

pentagon [3]

The 02 is a solid. I hope thus helped you :)

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2 years ago

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SVEN [57.7K]

I believe it is the second option

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4. Identify the different parts to this word problem. A bowling ball of 35.2kg, generates 218 kg.m/s units of momentum. What is

Dafna1 [17]

Given:

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Ans: The velocity of the ball is 6.19 m/s

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