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2 years ago

Answer all with detail please! Easy for those who have completed chemistry courses!

Chemistry

1 answer:

Zina [86]2 years ago

5 0

a) CH2O

each element can be divided by 2

b) BCl3

the molecule is already in it's empirical formula

c) CH4

the molecule is already in it's empirical formula

d)CH2O

each element can be divided by 6

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Another name for a "oxidation-reduction" reaction is

anzhelika [568]

Redox (red for reduction and ox for oxidation)

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3 years ago

(chem) which is more concentrated: 45.0 grams of HCOOH dissolved in 189 mL of water or 1.5 moles of CH↓2COOH dissolved in twice

Liula [17]

Answer:

CH3COOH would be more concentrated

Explanation:

The higher the concentration value, the more concentrated it is.

The relationship between concentration, moles and volume is given by the equation;

Concentration = No of moles / Volume

5.0 grams of HCOOH dissolved in 189 mL of water

Number of moles = Mass / Molar mass = 5 / 46.03 = 0.1086 mol

Concentration = 0.1086 / 0.189 = 0.5746 mol/L

1.5 moles of CH3COOH dissolved in twice as much water

Volume = 2 * 189 = 378 ml = 0.378 L

Concentration = 1.5 / 0.378 = 3.9683 mol/L

Comparing both concentration values;

CH3COOH would be more concentrated

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2 years ago

On a recent car ride, a student traveled the first 20 kilometers in 5 minutes, the next 60 kilometers in 50 minutes, and the las

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Answer:

it is 90 km in one hour it is 90km/h

90/60=1,5

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2 years ago

What is the acronym of DNA??

g100num [7]

Abbreviation. DNA, which stands for deoxyribonucleic acid, is defined as a nucleic acid that contains the genetic code.

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3 years ago

Given the equation: 2H2 + O2 → 2H2O, how many moles of oxygen are needed to react with 13 moles of hydrogen

bulgar [2K]

Explanation:

2H2 + O2 = 2H2O

2mol. 1mol. 2mol

2mol reacts with 1mol

13mol reacts with x

x=13mol × 1mol

2mol

x= 13mol

2mol

x= 6.5mol of oxygen

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1 year ago