3 years ago

What is the difference between mass and weight?

1 answer:

7 0

Explanation:

The mass of an object is a measure of the object's inertial property, or the amount of matter it contains. The weight of an object is a measure of the force exerted on the object by gravity, or the force needed to support it. The pull of gravity on the earth gives an object a downward acceleration of about 9.8 m/s2.

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What are valence electrons? how many of a magnesium atom’s 12 electrons are valence electrons?

wlad13 [49]

It has 2 valence electrons.

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3 years ago

A balloon is filled with 35.0 L of helium in the morning when the temperature is 35.00 oC.

nexus9112 [7]

Answer: V = 33.9 L

Explanation: We will use Charles Law to solve for the new volume.

Charles Law is expressed in the following formula. Temperatures must be converted in Kelvin.

V1 / T1 = V2 / T2 then derive for V2

V2 = V1 T2 / T1

= 35 L ( 308 K ) / 318 K

= 33.9 L

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3 years ago

When you see the word heptahydrate, what number should be written in front of the formula for water? 5 6 7 8?

Yuki888 [10]

Hept for 7, hence the number is seven.

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3 years ago

Which atom is smaller? (1 point) A. Hydrogen B. Oxygen

frutty [35]

Hydrogen because it only has one electron

6 0

3 years ago

Find the % by mass of the solute in 129.54 g C6H1206 in 525 g H20.

belka [17]

Answer:

19.79%

Explanation:

mass % = (mass solute / total mass) * 100

total mass = 129.54 + 525 = 654.54

solute = C6H12O6

(129.54/654.54) = .1979

.1979 * 100 = 19.79%

7 0

3 years ago