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bagirrra123 [75]
2 years ago
8

The melting points and boiling points of four elements are shown.

Chemistry
1 answer:
sweet-ann [11.9K]2 years ago
6 0

Answer:

6AM and the other three of them have to be the best team code in nepal for a while now I will not happen again which is a great opportunity for the club and I think it will not happen to him but he will send him to do the same with a club like this one event and he is the only player who is going through a tough game and we are not.....

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The density of seawater is 1.025 g/ml what is the mass of 100,000 ml of seawater in grams
melamori03 [73]
D = m / V

1.025 = m / 100,000 mL

m = 1.025 x 100,000

m = 102,500 g
8 0
3 years ago
In a separate experiment beginning from the same initial conditions, including a temperature Ti of 25.0°C, half the number of mo
NNADVOKAT [17]

Answer:

- 178 ºC

Explanation:

The  ideal gas law   states that :

PV = nRT,

where P is the pressure, V is the volume, n is number of moles , R is the gas constant and T is the absolute temperature.

For the initial conditions :

P₁ V₁ = n₁ R T₁    (1)

and for the final conditions:

P₂V₂= n₂ R T₂    where   n₂ = n₁/2     then    P₂ V₂ = n₁/2 T₂    (2)

Assuming V₂ = V₁ and  dividing (2) by Eqn (1) :

P₂ V₂ = n₁/2 R T₂  / ( n₁ R T₁)      then  P₂ / P₁ = 1/2 T₂ / T₁

4.10 atm / 25.7 atm = 1/2 T₂ / 298 K ⇒ T₂ = 0.16 x 298 x 2 = 95.1 K

T₂ = 95 - 273 = - 178 º C

6 0
3 years ago
Name the separation technique illustrated in the picture.<br><br> Chemistry Homework 80 points!
solmaris [256]

A. Filtration

This is because of the layers of Filter it goes through to make sure it is pure.

4 0
4 years ago
Read 2 more answers
In an electron dot diagram of propane (C3H8), how many double bonds are present?
NeX [460]

Answer:- none

Explanations:- For naming hydrocarbons we use the suffix -ane, -ene and -yne.

-ane is used when we have only single bonds between all carbons. -ene is used if there is any double bond between two carbons and the -yne is used if there is any triple bond between two carbons.

The given name of the compound is propane. It ends at -ane and so it's an alkane and must have single bonds between all the carbons it has. So, there are zero double bonds present in C_3H_8 .

This is also clear from the below lewis dot structure of the compound.


4 0
4 years ago
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How can the pH of a solution be calculated if the pOH is known?
daser333 [38]

the answer is d guys


4 0
3 years ago
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