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3 years ago

Determine the new pressure of a sample of hydrogen gas if the volume and moles are constant, the initial pressure is

Chemistry

1 answer:

masha68 [24]3 years ago

4 0

Answer:

6.3 atm

Explanation:

P2=T2P1/T1

Change C to K

We can check this by knowing that P and T at constant V have a proportional relationship; Hence, this is correct.

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Which statement correctly describes the relationship between air temperature and air pressure?

grigory [225]

Answer:

-Warm air sinks, creating an area of low pressure.

Explanation:

Heat will weigh more, than cool air!

7 0

3 years ago

What electrically neutral atom will have an electron configuration of 1s2 2s2 2p4?

abruzzese [7]

Answer:- oxygen.

Explanations:- The electronic configuration is given and we are asked to figure out the electrically neutral atom that will have the electron configuration, $1s^22s^22p^4$ .

The sum of electrons for this electron configuration is 8. If we look at the periodic table then 8 is the atomic number of oxygen.

So, the electrically neutral atom for the given electron configuration is oxygen.

6 0

3 years ago

What elements comprise the largest portion of Earth's atmosphere?

Mrrafil [7]

Answer:

Nitrogen and Oxygen make up 99% of the Earths atmosphere. Then Argon makes up the rest of the atmosphere.

3 0

3 years ago

Construct a three-step synthesis of 1,2-epoxycyclopentane from cyclopentanol by dragging the appropriate formulas into the bins.

vladimir2022 [97]

Answer:

(1) Bromination, (2) E2 elimination and (3) epoxidation

Explanation:

In the first step, -OH group in cyclopentanol is replaced by more facile leaving group Br by treating cyclopentanol with $PBr_{3}$

In the second step, E2 elimination in presence of strong base e.g. NaOEt/EtOH produce cyclopentene

In the third step, treatment of cyclopentene with mCPBA produces 1,2-epoxycyclopentane

Full reaction scheme has been shown below

8 0

3 years ago

In a particular redox reaction, clo2– is oxidized to clo4– and ag is reduced to ag. complete and balance the equation for this r

Klio2033 [76]

To write a complete balanced reaction of a redox reaction, we need to know the half reactions of the molecules involved in the reaction and to balance these reactions. From, the problem statement ClO2- is oxidized to ClO4- so the half reaction would be:

(ClO)2- = (ClO)4-

To balance,
We first balance the elements except O and H in the reaction.
(ClO2)- = (ClO4)-
Then, we balance O by adding H2O and balance H by adding H+
(ClO2)- + 2H2O = (ClO4)- + 2H+
Then, we balance the charges by adding electrons,
(ClO2)- + 2H2O = (ClO4)- + 2H+ + e-

Then for Ag+ to Ag,
Ag+ = Ag

We just need to balance the charge,
Ag+ + e- = Ag

To determine the final equation, we add both half reactions:

(ClO2)- + 2H2O = (ClO4)- + 2H+ + e-
Ag+ + e- = Ag
--------------------------------------------------------
<span>ClO2- +Ag+ +2H2O---> ClO4^- + Ag + 2H+</span>

3 0

3 years ago