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kirill [66]
4 years ago
14

Which of the following are true statements about minerals?

Chemistry
1 answer:
scoundrel [369]4 years ago
4 0

Answer:

c

Explanation:

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A gas has a pressure of 0.470 atm at 60.0 C. What is the pressure at standard temperature?
OLEGan [10]

Answer:

P2=0.385atm

Explanation:

step one:

Given that the temperature T1=  60 Celcius

we can convert this to kelvin by adding 273k to 60 Celcius

we have T1= 333k

pressure P1= 0.470 atm

step two:

we know that the standard temperature is T2= 273K

Applying the temperature and pressure relationship we have

P1/T1=P2/T2

substituting our given data we have

0.47/333=P2/273

cross multiply we have

P2= (0.47*273)/333

P2= 128.31/333

P2=0.385 atm

6 0
3 years ago
Somebody help me please i'm tired of trying to solve this problem ༎ຶ‿༎ຶ​
Elenna [48]

Answer:

Q    Line     A

A: (a) 0 (b) 20

B: (b) 10 (c) 10

C: (c) 10 (d) 10

D: (d) 10 (e) 13

E: (e) 13 (f) 0

F: (f) 0 (g) 0

a: The velocity is whatever you need to see when you are specifically using a numberline so the answer for a is just 10

b: The velocity for this one is not as easy as the last one, its 7.

Explanation:

When you have a number line and your trying to find a numberline, you just have to subtract the smaller line to the largest number but if you are trying to find the velocity in beetween more than one thane you add the two biggest ones and subtract the smallest one and if you make a wrong move like add the biggest and smalles youll... still get the same answer so it doesnt matter really but its just easier to do the smallest one as the subtracting number just FYI. Happy spring break!

5 0
2 years ago
According to molecular orbital theory, what is the bond order in the O2+ ion?
EleoNora [17]

well, I'm not good in chemistry

but I think it's 5.5

8 0
3 years ago
Which formula represents a polar molecule?<br> (1) O2 <br> (2) CO2 <br> (3) NH3<br> (4) CH4
lara [203]

Answer: Option (3) is the correct answer.

Explanation:

A molecule is polar when the net dipole moment of molecule is zero. When an electronegative atom is attached to an electropositive atom then the electronegative atom pulls the shared pair of electrons more towards itself.

As a result, the movement of electrons is more towards the electronegative atom and the dipole moment becomes zero. This will also induce partial positive and partial negative charge on electropositive and electronegative atom.

On the other hand, O_{2}, CO_{2}, and CH_{4} are covalent compounds and does not have a net zero dipole moment.

Thus, we can conclude that out of the given options NH_{3}  represents a polar molecule.

7 0
4 years ago
At a certain temperature, the ph of a neutral solution is 7.78. what is the value of kw at that temperature? express your answer
Strike441 [17]
Given the pH of the solution, we can determine [H⁺]. 

pH = -log[H⁺]
[H⁺] = 10⁻⁷·⁷⁸
[H⁺] = 1.659586907 x 10⁻⁸ M

We also know that pOH = 14 - pH. Thus, the pOH is  6.22. Given the pOH of the solution, we can determine [OH⁻]. 

pOH = -log[OH⁻]
[OH⁻] = 10⁻6.22
[OH⁻] =  6.02559586 x 10⁻⁷ M

The ionic product of water Kw, can then be calculated using the following equation.

Kw = [H⁺][OH⁻]
Kw = (1.659586907 x 10⁻⁸)(6.02559586 x 10⁻⁷)
Kw = 1.0 x 10⁻¹⁴
8 0
4 years ago
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