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loris [4]
3 years ago
9

Concepts of oxidation numbers and how to learn them​

Chemistry
2 answers:
Sloan [31]3 years ago
6 0

Answer:

yes is it yes yes yes yes yes yes yes yes yes yes

sdas [7]3 years ago
5 0
Yes like the other dude said
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A gas has v= 4.0L, T =27 degree C and P=2.0 atm. What is the V if T=327 degree C and P=8.0 atm?
wariber [46]
As I am reading the problem,i can tell the question gives you two temperatures, two pressures, one volume and asking for the other. this should be an indication that you need to use the following gas formula

P1V1/T1= P2V2/T2

P1= 2.0 atm
V2= 4.0 L
T1= 27= 300 K
P2= 8.0 atm
V2= ?
T2= 327= 600 k

let's plug in the values into the formula

(2.0 x 4.0)/ 300= (8.0 x V2)/ 600 K

V2= 2.0 Liters

answer is D
3 0
4 years ago
1. The atomic number of an element is 23 and its mass number is 56. a. How many protons and electrons does an atom of this eleme
Arte-miy333 [17]

Answer:

There are 23 protons and 23 electrons. We know this because atomic number denotes the number of protons and also electrons. There are 56 - 23 = 33 neutrons because atomic mass denotes the total number of protons and neutrons.

7 0
4 years ago
Calculate the concentration, in moles per litre, of a solution formed when 13.0 g of calcium hydroxide is dissolved in 5.0 L. Pl
vichka [17]

Answer: The concentration, in moles per litre, of a solution formed when 13.0 g of calcium hydroxide is dissolved in 5.0 L is 0.036 M

Explanation:

Molarity of a solution is defined as the number of moles of solute dissolved per liter of the solution.

Molarity=\frac{n}{V_s}

where,

n = moles of solute

V_s = volume of solution in L

moles of Ca(OH)_2 = \frac{\text {given mass}}{\text {Molar mass}}=\frac{13.0g}{74g/mol}=0.18mol

Now put all the given values in the formula of molality, we get

Molarity=\frac{0.18}{5.0L}=0.036M

Therefore, the concentration, in moles per litre, of a solution formed when 13.0 g of calcium hydroxide is dissolved in 5.0 L is 0.036 M

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3 years ago
Name two objects which are colourless liquid​
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water and asid sulfuric

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3 years ago
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What best explains the type of energy present in the wheels of a moving bus
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Kinetic energy due to the movement
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4 years ago
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