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3 years ago

As temperature increases, density increases. True or False

2 answers:

7 0

If the temperature of a chemical increases than the density increases because the rise of temperature expands the chemical which increases the density.

Alex73 [517]3 years ago

4 0

Density increases with the temperature, true.

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3. The temperature of a fixed mass of gas in a rigid container is decreased from 127.00 degrees

Sonbull [250]

Answer:

750mmHg

Explanation:

The following data were obtained from the question:

T1 = 127°C = 127 +273 = 400K

T2 = 27°C = 27 +273 = 300K

P1 = 1000mmHg

P2 =?

P1/T1 = P2/T2

1000/400 = P2 /300

Cross multiply

400 x P2 = 1000 x 300

Divide both side by 400

P2 = (1000 x 300)/400

P2 = 750mmHg

Therefore, the new pressure after cooling is 750mmHg

5 0

3 years ago

Describe two ways you could demonstrate an acceleration of 2 meters per second squared?

BaLLatris [955]

Answer:

You could do 88 metars

Explanation:

7 0

3 years ago

Read 2 more answers

The periodic table is divided into different blocks. Elements that have complete valence electron shells are mostly found in the

inn [45]

Elements with complete electron shells are most likely noble gases which have 8 valence electrons in their outer shell. So the letter farthest to the right should be the correct answer. Noble gases are found in group 18

7 0

3 years ago

Read 2 more answers

Hydroxylamine nitrate contains 29.17 mass % N, 4.20 mass % H, and 66.63 mass % O. Determine its empirical formula.

Rina8888 [55]

Answer:

the empirical formula is $H_2NO_2$

Explanation:

The empirical formula is

The following information is given

It contains 29.17 mass percentage of N

4.20 mass percentage of H

And, 66.63 mass percentage of 0

Now based on the above information, the empirical formula is $H_2NO_2$

hence, the same is to be considered and relevant too

8 0

3 years ago

What volume of solution is needed to prepare a 0.50M solution of sodium hydroxide using 2.0 g of solute? Show your work

Aleks04 [339]

Answer:

0.10 L

Explanation:

First we convert the 2.0 grams of solute (meaning sodium hydroxide) into moles, using its molar mass:

2.0 g ÷ 40 g/mol = 0.05 mol NaOH

Then we can calculate the required volume of solution, using the definition of molarity:

Molarity = moles / liters

liters = moles / molarity

0.05 mol / 0.50 M = 0.10 L

6 0

3 years ago