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3 years ago

What is part of the muscular system?

Chemistry

1 answer:

Likurg_2 [28]3 years ago

8 0

Answer:

skeletal, smooth, and cardiac muscles

Explanation:

Plz brainliest

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How many grams of Kr are in a 9.59 L cylinder at 46.0 'C and 4.62 atm?<br> mass:

Sladkaya [172]

Answer:

Mass = 141.6 g

Explanation:

Given data:

Mass of Kr in gram = ?

Volume in L = 9.59 L

Temperature = 46.0°C

Pressure = 4.62 atm

Solution:

The given problem will be solve by using general gas equation,

PV = nRT

P= Pressure

V = volume

n = number of moles

R = general gas constant = 0.0821 atm.L/ mol.K

T = temperature in kelvin

Now we will convert the temperature.

46.0+273 = 319 K

4.62 atm × 9.59 L = n× 0.0821 atm.L/ mol.K ×319 K

44.3 atm.L = n×26.19 atm.L/ mol

n = 44.3 atm.L / 26.19 atm.L/ mol

n = 1.69 mol

Mass in gram:

Mass = number of moles × molar mass

Mass = 1.69 mol × 83.79 g/mol

Mass = 141.6 g

8 0

3 years ago

What is the density of a liquid if the volume is 25 mL and the mass is 20.0 g?

LenKa [72]

Answers:

Density = 0.8 g/mol.

Given data:

v = 25 ml

m = 20 g

δ = ?

Solution:

Formula for calculating density is given as,

Density = Mass / Volume

putting values

Density = 20.0 g / 25 ml

Density = 0.8 g/mol.

3 0

3 years ago

An ionic compound that results from the reaction of an acid and a base is called a(n)______. the cation in this compound comes f

harkovskaia [24]

An ionic compound that results from the reaction of an acid and a base is called a(n) salt. the cation in this compound comes from the base while the anion comes from the acid.

When an acid and a base are together, they react to counteract each other's effects and create a salt.

Water is created when the OH(-) anion of the base and the H(+) cation of the acid mix.

A salt is a substance that is created when an anion from an acid and a base combine.

Common table salt, NaCl, is created when sodium hydroxide and hydrochloric acid are combined.

The positive ion (cation) of a base and the negative ion (anion) of an acid make up a salt.

A neutralizing reaction occurs when an acid and a base interact. Additionally, sodium chloride, generally known as table salt, is referred to as salt.

Learn more about neutralization reaction here brainly.com/question/23008798

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6 0

2 years ago

Good morning guys have a good day and please take care ❤️

Galina-37 [17]

Explanation:

Thank u

have good day ahead:)

4 0

3 years ago

Read 2 more answers

Heat is transferred at a rate of 2 kW from a hot reservoir at 825 K to a cold reservoir at 300 K. Calculate the rate at which th

kakasveta [241]

Answer:

0.004243 KW/K.

Explanation:

From the question given above, the following data were obtained:

Heat transfered (Q) = 2 KW

Temperature of hot reservoir (Tₕ) = 825 K

Temperature of cold reservoir (T꜀) = 300 K

Next, we shall determine the entropy of both reservoir. This can be obtained as follow:

For hot reservoir:

Heat transfered (Q) = 2 KW

Temperature of hot reservoir (Tₕ) = 825 K

Entropy of hot reservoir (Sₕ) =?

Sₕ = Q/Tₕ

Sₕ = 2/825

Sₕ = 0.002424 KW/K

For cold reservoir:

Heat transfered (Q) = 2 KW

Temperature of cold reservoir (T꜀) = 300 K

Entropy of cold reservoir (S꜀) =?

S꜀ = Q/T꜀

S꜀ = 2/300

S꜀ = 0.006667 KW/K

Finally, we shall determine the change in the entropy of the two reservoirs. This can be obtained as follow:

Entropy of hot reservoir (Sₕ) = 0.002424 KW/K

Entropy of cold reservoir (S꜀) = 0.006667 KW/K

Change in entropy (ΔS) =?

ΔS = S꜀ – Sₕ

ΔS = 0.006667 – 0.002424

ΔS = 0.004243 KW/K.

6 0

3 years ago