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28 days ago

0.036549 round to three sig figs

2 answers:

6 0

3 first significant figure
6 second significant figure
5 third significant figure
4 cannot exceed 5, so retain 5 instead of increasing it to 6

0.0365

Tems11 [2.4K]28 days ago

6 0

Answer:

0.0365

Explanation:

For the number given,

0.036549,

there are a total of 5 significant figures (i.e. 3, 6, 5, 4, and 9).

When rounding a decimal to 3 significant figures, we consider the fourth significant figure after the decimal point.

If that figure is 5 or greater, we increase the last significant figure by one, otherwise, it remains unchanged.

In this case, the fourth significant figure after the decimal point is 4.

Thus, 0.036549 ≈ 0.0365 (rounded to 3 significant figures)

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Answer:

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Explanation:

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Molar concentration of the solution = 0.0366 M

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Moles of hydrated sodium carbonate = n

$0.0366 M=\frac{n}{5.00 L}$

$n=0.0366 M\times 5 mol=0.183 mol$

Weight of hydrated sodium carbonate = n = 52.2 g

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1 month ago

A compound composed of only carbon and chlorine is 85.5% chlorine by mass. propose a lewis structure for the lightest of the pos

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The visual representation is displayed in the following image.

For calculations, consider 100 grams of the compound:

ω(Cl) = 85.5% ÷ 100%.

ω(Cl) = 0.855; signifying the mass percentage of chlorine in the compound.

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m(C) = 14.5 g; indicating the mass of carbon.

n(Cl) = m(Cl) ÷ M(Cl).

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1 month ago

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1 month ago

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eduard [2509]

1) Calcium carbonate comprises 40.0% calcium by weight.
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2) The mass fraction mentioned is superfluous information.

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29 days ago

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Answer:

Explanation:

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$A=A_0e^{\lambda t}$

where,

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since,

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