Answer:
An ion is a charged atom or molecule. It is charged because the number of electrons do not equal the number of protons in the atom or molecule. An atom can acquire a positive charge or a negative charge depending on whether the number of electrons in an atom is greater or less then the number of protons in the atom.
Explanation:
hope it's right
Q = mc∆T
m = mass
c = specific heat capacity
∆T = change in temperature
Q = mass x specific heat x change in temperature
Q1 = 1 * 390 * 10 = 3900
Q2 = 1 * 4186 * 10 = 41,860
Q3 = 1 * 840 * 10 = 8,400
Add them all up to get the total energy needed to increase the temperature of the whole set by 10°C.
3900 + 41860 = 45,760
45,760 + 8,400 = 54,160
Therefore, 54,160J is needed to increase the temperature by 10°C.
Answer:
23.5 grams of AlBr3 will be produced by 27.20 grams of NaBr
Explanation:
The balanced equation here is
6NaBr + 1AlO3 = 3Na2O + 2AlBr3
6 moles of NaBr are required to produce 2 moles of AlBr3
Mass of one mole of NaBr = 102.894 g/mol
Mass of one mole of AlBr3 = 266.69 g/mol
Mass of 6 moles of NaBr = 6*102.894 g/mol
Mass of two moles of AlBr3 = 2*266.69 g/mol
6*102.894 g NaBr produces 2*266.69 g of AlBr3
23.5 grams of AlBr3 will be produced by (6*102.894)/(2*266.69 )*23.5 = 27.20 grams of NaBr
<u>Answer:</u> The partial pressure of oxygen gas is 57.8 kPa
<u>Explanation:</u>
Dalton's law of partial pressure states that the total pressure of the system is equal to the sum of partial pressure of each component present in it.
To calculate the partial pressure of oxygen gas, we use the law given by Dalton, which is:
We are given:
Total pressure of the tank, = 201.4 kPa
Vapor pressure of helium, = 125.4 kPa
Vapor pressure of carbon dioxide, = 18.2 kPa
Putting values in above equation, we get:
Hence, the partial pressure of oxygen gas is 57.8 kPa