4 years ago

What are two things that characterize the practice of science

Chemistry

1 answer:

MAVERICK [17]4 years ago

6 0

The experiments and safety rules.

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How is energy transfer different from energy transformation?

stepan [7]

Answer:

Transformation is into a different type of energy Ex: chemical to physical

Transfer is going to a to a place Ex: door knob to you

Explanation:

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5stars

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3 years ago

You've decided to try to make your own wine by adding yeast to a sweet grape juice. After allowing plenty of time for the yeast

aalyn [17]

Answer:

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How many capsules containing 75mg of Tamiflu could be produced from 155g of star anise.?

jeyben [28]

From the question you will find that:
one capsule of tamiflu is obtained from 2.6 g of star anise.
1 capsule = 2.6 g tamiflu
? capsules = 155 g tamiflu
by cross multiplication = $\frac{(1 x 155)}{2.6}$ = 59 capsules

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4 years ago

What is the volume occupied by 0.255 mol of helium gas at 1.31 atm and 301 K?

KiRa [710]

Answer:

Solution 59P

n = 0.255 mol of He

P = 1.25 atm

T = 305 K.

V= ?

This can be found using ideal gas equation :

PV = nRT

V =

We know, gas constant (R) = 0.0821 L.atm mol-1 K-1.

= 5.10 L.

Hence, volume of He is 5.10 L

Explanation:

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3 years ago

A pound is approximately 0.45 kilogram. A person weighs 87 kilograms. What is the person’s weight, in pounds, when expressed to

Sauron [17]

Answer:

87 kilograms =191.8 pounds

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4 years ago

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