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3 years ago

HELP!!!!!!!!!!!!!!

Chemistry

2 answers:

romanna [79]3 years ago

8 0

Answer:

The universe is expanding

Explanation:

As long as the amount of stuff doesn't go over a critical threshold, the universe will continue to expand forever, and eventually suffer heat death, freezing out. But if there's too much stuff, the expansion of the universe will slow down and stop. Then the universe will begin to contract.

HOPE IT HELPS :)

PLEASE MARK IT THE BRAINLIEST!

makkiz [27]3 years ago

7 0

Answer:

The universe is expanding

Explanation:

<em>Its expanding in many ways as in technology, mind, life it self, </em> its all part of a life form in the universe to create more life in earth and other places like the micro organism with the bacteria and the microscopic life form.

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Part A

den301095 [7]

Answer:

$n_{Cl_2}=0.3molCl_2$

Explanation:

Hello there!

In this case, according to the given chemical reaction whereas the sodium chloride is in a 2:1 mole ratio with chlorine, the required moles of the later are computed as shown below:

$n_{Cl_2}=0.6molNaCl*\frac{1molCl_2}{2molNaCl}$

So we cancel out the moles of NaCl to obtain:

$n_{Cl_2}=0.3molCl_2$

Best regards!

3 0

2 years ago

You were rushing to get to school on time and dropped your breakfast food! Choose one atom in that food item and explain the sto

OLga [1]

Answer:

I am going to chose your apple on your breakfast plate. Somebody plantes the apple seed. The apple tree takes time to grow. Once the apples are ready to be picked they are picked. Then the apples are sorted and go off to different schools like your school. Which is where you pick the apple up and put it on your plate.

Explanation:

3 0

2 years ago

Denver, Colorado (altitude above sea level is 5,280 ft) has an atmospheric pressure of 633. mm Hg. Calculate the boiling point o

Fed [463]

Answer:

T2 = 94.6 C

Explanation:

Use Clausius-Clayperyon equation.

ln P1/P2 = ∆Hvap/R (1/T2 - 1/T1) where R = 8.314 J/mol-K and T is in degrees K

P1 = 760 mmHg

P2 = 630 mmHg

T1 = 373 K

T2 = ?

∆Hvap = 40.7 kJ/mole

R = 0.008314 kJ/mole-K (NOTE: change R to units of kJ)

Plug in and solve for T2

ln 760 mmHg/630 mmHg = 40.7 kJ/mole (1/T2 - 1/373K)

T2 = 367.74 K = 94.6 C

8 0

3 years ago

Excess reagent definition

victus00 [196]

The reactant in a chemical reaction that limits the amount of product that can be formed. The reaction will stop when all of the limiting reactant is consumed

8 0

3 years ago

A bike tire at a pressure of 2.4 atm and a

hjlf

Answer:

5.4 atm

Explanation:

P•V/T = P'•V'/T'

2.4•2.2/290 = P'•2/296

5.28/290 = P'/296 Multiply both sides by 296

1562.88/290 = P'

I'm = 5.4 atm

3 0

2 years ago