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Westkost [7]
3 years ago
9

Which of the following is true? Scientific notation is written

Chemistry
1 answer:
guapka [62]3 years ago
3 0

Answer: d

Explanation: For an example, many scientists use scientific notation when referring to the sun and moon. They use the power of ten to refer to the large numbers of miles away from the earth.

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Explain what is meant by sp^3 hybridization. <br><br><br> Please help me
Sergio [31]
That means that one (s) type orbital and three (p) type orbitals (all of the p orbitals in the valence set) have been mixed together to form four NEW atomic orbitals, all of equal energy, that point in specific directions (to the four vertices of a tetrahedron) the directions that the orbitals point is THE point of doing this because that enables you to explain why certain compounds like CH4 have a tetrahedral structure. It's kind of circular logic that you have to basically accept, but it makes sense if you delve deeper into the theory
4 0
4 years ago
Find the percent composition of lead in lead (II) nitrate. round to 2 significant figures.​
just olya [345]

Answer/Explanation:

62.559%

mass of an element   X 100%

mass of the compound

Scientific Notation: 3.45 x 10^5

E Notation: 3.45e5

5 0
3 years ago
Select the correct structure that
gogolik [260]

Answer:

C. Both

Explanation:

5 0
3 years ago
Read 2 more answers
Dinitrogen tetraoxide is a colorless gas at room temperature. It can dissociate into nitrogen dioxide, which is a reddish brown
Alenkinab [10]

Complete Question

The complete question is shown on the first uploaded image

Answer:

The calculation and filling of the table based on the ratio indicated by the column is shown on the second uploaded image

1 This is True

2 This is False

3 This is False

4 This is  True

5 This is  True

Explanation:

Based on your calculations, indicate whether each statement is True (T) or False (F):

Considering the first statement

Looking at the question we can see that the first statement is TRUE this because  all the three experiment have different initial concentration (3.5,3.0 & 2.6)

Considering the second  statement

 Looking at table we can see that the second statement is FALSE  because  

the ratio value of [NO2]/ [N2O4] in all three experiment have different value  1.4 , 1.5 & 1.7 is not a constant value.

Considering the Third  statement

Looking at the table we can see that the third statement is FALSE this  is because the ratio value of 2[NO2]/ [N2O4] in all three experiment have different value 2.7, 3.0 & 3.3 is not a constant value.

Considering the Fourth  statement

Looking at table we can see that the fourth statement is TRUE this is because the ratio value of[NO2]^{2}/ [N2O4] in all three experiment have same value 3.9, 3.9 & 3.9 is a constant value.

Considering the Fifth  statement

Looking at table we can see that the fifth statement is TRUE this is because

each having different set of Equilibrium concentration

3 0
4 years ago
50cm3 of a mixture of methane and hydrogen were mixed with excess oxygen and exploded, the product after cooling to the original
marin [14]

Answer:the initial composition of the reactants is

40cm^3 of CH4

40cm^3of H2

100cm^3 of H2O

Explanation:

Balanced reaction is

CH4 +H2+5/2O2______

CO2 +3H2O

Excess KOH at room temperature absorbs CO2 whose volume is given by 40cm^3 i.e the volume by which the solution decreases

So using Gay lussac combining ratio which states that gases combine in volumes that are in simple ratio to each other if gases.

Since CO2 in the equation is 1 mole

Means 1mole represent 40cm^3

So CH4:H2:O2 are in ratio of 1:1:5/2=(40:40:100)cm^3 respectively.

8 0
3 years ago
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