3 years ago

Convert 0.044km to meters

Chemistry

1 answer:

Andru [333]3 years ago

5 0

1km=1000m
So 0.044•1000=44m
0.044km=44m

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ASAP (:

Korvikt [17]

1) $CO (g) + 2H_{2}(g) ---> CH_{3}OH (g)$

Moles of methanol = $208 kg CH_{3}OH * \frac{1000 g}{1 kg} * \frac{1 mol CH_{3}OH}{32.04 g CH_{3}OH} = 6492 mol CH_{3}OH$

Mass of $H_{2}$ that would produce 208 kg methanol =

$6492 mol CH_{3}OH * \frac{2 mol H_{2}}{1 mol CH_{3}OH} * \frac{2.02 g H_{2}}{1 mol H_{2}} * \frac{1 kg}{1000 g}= 26.2 kg H_{2}$

2) Mass of sodium = $1.3 * 10^{21} atoms Na * \frac{1 mol Na}{6.022* 10^{23}atoms Na} * \frac{22.99 g Na}{1 mol Na} = 0.0496 g Na$

3) Mass of mercury = $1.2 mL * 13.6 \frac{g}{mL} = 16.32 g$

Number of atoms of mercury = $16.32 g Hg * \frac{1 mol Hg}{200.59 g Hg} * \frac{6.022* 10^{23} atoms Hg}{1 mol Hg} = 4.9 * 10^{22} atoms Hg$

5 0

4 years ago

If you use 19 mL of 0.100 M KMnO4, how many moles have you used? The answer has to be in four decimal places (do not forget the

Scorpion4ik [409]

1)

Volume = 19 / 1000 = 0.019 L

n = M * V

n = 0.100 * 0.019

n = 0.0019 moles
__________________________

2)

M₁ * V₁ = M₂* V₂

5.0 * V₁ = 1.0 * 152

5.0 V₁ = 152

V₁ = 152 / 5.0

V₁ = 30.4 mL
______________________________________

<span>hope this helps!</span>

3 0

3 years ago

Help please hurry pic below

masha68 [24]

Answer:

Explanation: