2 years ago

(40) If a hypothesis is proven correct, a theory is formulated. True or false

1 answer:

8 0

Answer: False, I believe.

Explanation: If a Hypothesis is proven correct, then another experiment to strengthen that Hypothesis is should be done.

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During the phase change from solid ice to liquid water, which bonds/forces are being weakened?

vampirchik [111]

I think Intramolecular forces are being weakened

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2 years ago

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A candle is 10 cm high and 2 cm in diameter physical or chemical property

rewona [7]

Answer: Physical property

Explanation: length and dimensions are under physical properties of matter.

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2 years ago

Gas a (L^2. atm/mol^2) b(L/mol)

Amiraneli [1.4K]

Answer:

Explanation:

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2 years ago

How many moles are 21.67 L of NH4CI?

Gnoma [55]

Answer:

0.967mole

Explanation:

Given parameters:

Volume of NH₄Cl = 21.67L

Unknown:

Number of moles = ?

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If we assume that the volume was taken at standard temperature and pressure,

Then;

Number of moles = $\frac{volume }{22.4L}$

Number of moles = $\frac{21.67}{22.4}$ = 0.967mole

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2 years ago

A sample of gas has a volume of 75.0 mL at 30.0 psi. Determine the pressure of the gas if its volume is changed to 15 mL and its

Assoli18 [71]

Answer:

5.995 psi

Explanation:

30 psi = 2.04 atm

75 mL = 0.075 L

15 mL = 0.015 L

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0.075x = 0.0306

x = 0.408

0.408 atm = 5.995 psi

4 0

3 years ago