A sample of water is heated from 10.0 degrees Celcius to 15.0 degrees Celcius by the addition of 125 Joules of heat. What is the mass of the water?

Answers

Answer 1

Answer:

Answer:

125 = 5*4.186*m

m = 125 / 5*4.186 = 5.97g of water.

Explanation:

The water is increased by 5 degrees. This means that for every gram of water, it takes 5*4.186 J to increase the temperature by 5 degrees, aka 5*4.186 J/g

hope this help:)

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Find the molarity of the following solutions: 0.5 moles of sodium chloride is dissolved to make 0.05 liters of solution.

Answers

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What is the volume of 2 mol of chlorine gas at STP?

Answers

Answer:

Volume of 2 mol of chlorine gas at STP is 44.8 L

Explanation:

Let us assume chlorine gas behaves ideally.

According to law of ideal gas- PV=nRT

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

At STP, P is 1 atm and T is 273 K

Here n=2 and R=0.082 L.atm/mol.K

So $V=(nRT)/(P)=(2* 0.082* 273)/(1)L=44.8 L$

Hence volume of chlorine gas at STP is 44.8 L

The conversion factor for volume at STP is $\frac {1mol}{22.4L}$ or \frac {22.4L}{1mol}. Since we want volume, we would use \frac {22.4L}{1mol}. We conclude with the following calculations:

$2molCl_(2)*\frac {22.4LCl_(2)}{1molCl_(2)} = 44.8L Cl_(2)$

The answer is 44.8L Cl2

When a helium atom is stripped of its two electrons, what's left are two protons and two neutrons. This "electron-less" atom is sometimes called a(n)a. quark.
b. beta particle.
c. alpha particle.
d. helium isotope.

Answers

alpha particle. You will see these in nuclear chemistry due to the fact that this is one of the type of radio active decay.

I hope this helps.

Which of the following is a quemical property ?

Answers

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a. I
b. F
c. Ir
d. Fe

Answers

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Which of the following has an incomplete octet in the lewis structure?A) SO2
B) ICl
C) CO2
D) F2
E) NO

how to get it?

Answers

"NO" is the one among the following choices given in the question that has an incomplete octet in the Lewis structure. The correct option among all the options that are given in the question is the fifth option or the last option or option "E". I hope that this is the answer that has come to your help.

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