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mars1129 [50]
3 years ago
7

Classify the same processes as exothermic or endothermic.

Chemistry
2 answers:
Inessa [10]3 years ago
8 0

Answer:

1.endothermic

2.exothermic

3.exothermic

RSB [31]3 years ago
5 0

Answer:

1. Endothermic

2. Exothermic

3. Exothermic

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Is the following equation balanced? SO3 + 2H2O H2SO4 no yes
postnew [5]

Answer: No

Explanation: It's not balanced because four oxygen atoms in H2SO4,  whereas there are 5 oxygen atoms in the reactants side. Also, there's more hydrogen atoms on the reactants side.

I hope this helps!

7 0
3 years ago
List 2 of the important properties of gases.
sukhopar [10]
Gasses are easy to compress
And they expand to fill their containers
8 0
3 years ago
Read 2 more answers
Diffrences between Dilute and concentrated solution
Novosadov [1.4K]

Answer:

dilute means to. add water in solution and concentrated means pure solution

4 0
2 years ago
Read 2 more answers
What number of electrons balances the charges in this half reaction
Digiron [165]

Answer : Two electrons balances the charges in this half reaction.

Explanation :

The given half reaction is,

SO_2+2H_2O\rightarrow SO^{2-}_4+4H^+

In this half reaction, there is no charges present on the left side of the reaction but on right side of the reaction, (2+) charge is present. So, two electrons (2-) are added on the right side of the reaction for balances the charge of the half reaction.

The balanced half reaction is,

SO_2+2H_2O\rightarrow SO^{2-}_4+4H^++2e^-

Hence, two electrons balances the charges in this half reaction.

6 0
3 years ago
An aqueous solution at 27°c contains 3.6 g of a protein in a 200 ml sample. the osmotic pressure is 0.0203 atm. what is the mola
umka21 [38]
In order to calculate the molar mass of the protein, we may manipulate the ideal gas equation:
PV = nRT, where n is the number of moles. We also know that:
n = m / Mr, where m is mass and Mr is molecular weight
Thus,
Mr = (mRT)/(PV)
Here, the mass is in grams, the temperature is in Kelvin, the pressure is in atm and the volume is in liters, so the molar gas constant is 0.082057.

Mr = (3.6 * 0.082057 * (27 + 273)) / (0.0203 * 0.2)
Mr = 21,828 g/mol
Thus, the Mr of the protein is 2.18 x 10⁴ g/mol
8 0
3 years ago
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