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joja [24]
3 years ago
8

Question 6 of 15

Chemistry
1 answer:
Georgia [21]3 years ago
4 0

Answer:

c

Explanation:

hypothesis is a scientific guess made be scientist in order to give account for the natural phenomenon

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If the density of water is 1g/cm3 what is its specific gravity
MakcuM [25]

Answer:

Specific gravity is the density of asubstance divided by the density of water. Since (at standard temperature and pressure) water has a density of 1 gram/cm3, and since all of the units cancel, specific gravity is usually very close to the same value as density(but without any units).

8 0
3 years ago
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zalisa [80]
D volume
the water evaporated so there is less water

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3 years ago
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A gas occupies 49 liters at a pressure of 367 mm Hg. What is the volume when the pressure is increased to 784 mm Hg?
vodka [1.7K]

Answer:

22.94 L.

Explanation:

We can use the general law of ideal gas: PV = nRT.

where, P is the pressure of the gas in atm.

V is the volume of the gas in L.

n is the no. of moles of the gas in mol.

R is the general gas constant,

T is the temperature of the gas in K.

If n and T are constant, and have two different values of V and P:

P₁V₁ = P₂V₂

P₁ = 367.0 mm Hg, V₁ = 49.0 L.

P₂ = 784.0 mm Hg, V₂ = ??? L.

∴ V₂ = P₁V₁/P₂ = (367.0 mm Hg)(49.0 L)/(784.0 mm Hg) = 22.94 L.

7 0
3 years ago
Danielle is designing a system to help race cars slow safely and rapidly at her local racetrack. The racetrack is a straight, 1,
xeze [42]

Answer:

The answer is C

Explanation:

She should make the parachutes smaller in order to decrease the drag forces on the car and bring it to a stop 400 meters after crossing the finish line.

3 0
3 years ago
Why are protons in an atom so important? Question 5 options: A. Protons determine the atoms' identity (type of element) and wher
Gennadij [26K]

Your answer is A my friend as the atomic number of an atom is determined by the number of protons

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3 years ago
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