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3 years ago

11

How do I convert 498.82 cg to mg

2 answers:

Rus_ich [418]3 years ago

6 0

498.82 cg ( mg
4988.2 mg

Gelneren [198K]3 years ago

5 0

There are a 100 centigrams in a milligram, so 498.82 cg is equal to 4988.2 mg.

Hope this helps.

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Two identical 732.0 L tanks each contain 212.0 g of gas at 293 K, with neon in one tank and nitrogen in the other. Based on the

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3 years ago

If you mix 50mL of 0.1 M TRIS acid with 60 mL of0.2 M<br> TRIS base, what will be the resulting pH?

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<u>Answer:</u> The pH of resulting solution is 8.7

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Putting values in above equation, we get:

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$pH=pK_a+\log(\frac{[salt]}{[acid]})$

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$pK_a$ = negative logarithm of acid dissociation constant of TRIS acid = 8.3

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3 years ago

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2 years ago

How many moles of N2 in 57.1 g of N2?

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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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2 years ago