3 years ago

WORDS:

Chemistry

1 answer:

Brilliant_brown [7]3 years ago

5 0

Answer:

Explanation:

What ink the

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Convert 2.83 days into seconds

katovenus [111]

2.83 days into hours = 2.83 x 24 = 67.92 hours

67.92 hours into minute = 67.92 x 60 = 4075.2 minutes

4075.2 minutes into seconds = 4075.2 x 60 = 244,512 seconds.

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3 years ago

What is the mole ratio of to Fe? 1:3 1:4 3:1 4:3

kobusy [5.1K]

What is the mole ratio of to Fe? if oxygen it is 4:3 Fe3O4

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3 years ago

The specific rotation of (S)-2-butanol is +13.5. If 0.119 g of its enantiomer is dissolved in 10.0 mL of ethanol and

larisa86 [58]

Answer:

+15.8°

Explanation:

The formula for the observed rotation (α) of an optically active sample is

α = [α]lc

where

l = the cell path length in decimetres

c = the concentration in units of g/100 mL

[α] = the specific rotation in degrees

1. Convert the concentration to units of g/100 mL

$c = \frac{\text{0.119 g}}{\text{10.0 mL}} \times \frac{10 }{10 } =\frac{\text{1.19 g}}{\text{100 mL}}$

2. Calculate the observed rotation

$\alpha = (+13.3 ^{\circ}) \times 1.19 \times 1 = +15.8^{\circ}$

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4 years ago

1. How many moles are in 493.4 grams of calcium phosphide?

finlep [7]

Formula = Ca3P2
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Mole = 493.4g / 180g = 2.74mols

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3 years ago

25 points, pls help

Darya [45]

your answer is B my friend

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3 years ago

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