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2 years ago

PLZZZZZZZ HELPPPPPPPPPPP:))))

Chemistry

1 answer:

MArishka [77]2 years ago

7 0

Answer:

C

Explanation:

Smooth muscles are in the digestive system, skeletal muscles are the ones we voluntarily move, and cardiac muscles are for the heart.

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How does a phospholipid behave in water?

bonufazy [111]

It is A since the tails are hydrophobic.

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2 years ago

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A 1.0 mol sample of which of the following compounds has the greatest mass?

Sholpan [36]

Answer:

D) N2O5

Explanation:

The molar mass of a substance is defined as the mass of this substance in 1 mol. To solve this question we must find the molar mass of each option:

Molar mass NO:

1N = 14g/mol*1

1O = 16g/mol*1

14+16 = 30g/mol

Molar mass NO2:

1N = 14g/mol*1

2O = 16g/mol*2

14+32 = 46g/mol

Molar mass N2O:

2N = 14g/mol*2

1O = 16g/mol*1

28+16 = 44g/mol

Molar mass N2O5:

2N = 14g/mol*2

5O = 16g/mol*5

28+80 = 108g/mol

That means the compound with the greatest mass is:

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2 years ago

Which path will a carbon atom most likely travel from CO2 in the atmosphere to glucose in the cell of a secondary consumer

SVETLANKA909090 [29]

Answer:

See the answer below

Explanation:

The carbon will have to travel in the form of CO2 from the atmosphere to a primary producer (green plant), from there to a primary consumer (herbivorous animal), and finally to a secondary consumer.

The primary producer (a green plant) would fix the carbon in the CO2 to carbohydrate through a process known as photosynthesis. The equation of the process is as shown below:

$6 CO_2 + 6 H_2O --> C_6H_1_2O_6 + 6 O_2$

The carbon, now in the form of carbohydrate, would then be picked up by an animal (a primary consumer) that feeds on the green plant. The carbon would eventually get into a secondary consumer when the secondary consumer feeds on the primary consumer that fed on the green plant.

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3 years ago

4. Given the chemical formulas of the following compounds, name each compound and state the rules you used to determine each nam

earnstyle [38]

I honestly dont even kno

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3 years ago

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Find the percentage composition of each element in the compound having 9.8 grams of nitrogen,0.7 grams of hydrogen and 33.6 gram

prisoha [69]

Answer: The percentage composition of nitrogen , hydrogen and oxygen is 22.2 % , 1.59 % and 76.2% respectively.

Explanation:

Percentage composition is defined as the ratio of mass of substance to the total mass in terms of percentage.

Percentage composition= $\frac{\text {mass of the element}}{\text {Total mass of the substance}}\times 100\%$

a) ${\text {percentage composition of nitrogen}}=\frac{\text {mass of nitrogen}}{\text {Total mass}}\times 100\%$

${\text {percentage composition of nitrogen}}=\frac{9.8g}{9.8+0.7+33.6}\times 100\%=22.2\%$

b) ${\text {percentage composition of hydrogen}}=\frac{\text {mass of hydrogen}}{\text {Total mass}}\times 100\%$

${\text {percentage composition of hydrogen}}=\frac{0.7}{9.8+0.7+33.6}\times 100\%=1.59\%$

c) ${\text {percentage composition of oxygen}}=\frac{\text {mass of oxygen}}{\text {Total mass}}\times 100\%$

${\text {percentage composition of oxygen}}=\frac{33.6}{9.8+0.7+33.6}\times 100\%=76.2\%$

The percentage composition of nitrogen , hydrogen and oxygen is 22.2 % , 1.59 % and 76.2% respectively.

4 0

2 years ago