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3 years ago

Please help!! my grades dying 15 points

Chemistry

1 answer:

AysviL [449]3 years ago

4 0

Answers-in-bold:

There are two common temperature scales. On the Fahrenheit scale, water freezes at 32 degrees. The Celsius scale divides the interval between the freezing and boiling points of water into 100 degrees.

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Scientists can tell recycling reduces atmospheric emissions by knowing which of the following? o it takes more Btu to manufactur

Dmitriy789 [7]

Answer:

According to the Environmental Paper Network's Paper Calculator, it takes about 32 million BTUs of energy to produce 1 ton of virgin paper fiber. To produce 1 ton of recycled paper, it takes about 22 million BTUs.

so the answer could be it takes less Btu to manufacture recycled products than new ones

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3 years ago

How does a foam-filled winter coat help keep a person warm?

Rudik [331]

Answer:

It slows down the transfer of thermal energy from outside to inside the coat.

Explanation:

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4 years ago

In which location would you expect to find the greatest species diversity?!

Crank

I believe the answer is Canada!

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4 years ago

Cuántos moles y gramos de Hcl pueden producirse a partir de 945g de ácido sulfúrico.?

Xelga [282]

I’m confused and that comment above is probably a trafficker

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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