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2 years ago

11

Insulin is a protein that is used by the body to regulate both carbohydrate and fat metabolism. A bottle contains 425 mL of insu

lin at a concentration of 40.0 mg/mL . What is the total mass of insulin in the bottle?

1 answer:

olganol [36]2 years ago

8 0

It would be 29.00 mg

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What percent composition of phosphorus in Zn3(PO4)2? This means to find the percent composition of each

Korvikt [17]

Answer: Zn 50.803%

Oxygen O 33.152%

Phosphorus P 16.045%

Explanation:

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2 years ago

What type of plant is thought to be the first plant?

Sergio [31]

Angiosperms can produce flowers and fruits to aid in seed dispersal.

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2 years ago

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Ammonium phosphate is an important ingredient in many solid fertilizers. It can be made by reacting aqueous phosphoric acid with

ankoles [38]

Answer:

$n_{NH_3}=0.18molNH_3$

Explanation:

Hello,

In this case, the undergoing chemical reaction is:

$H_3PO_4(aq)+3NH_3(l)\rightarrow (NH_4)_3PO_4$

In such a way, considering the 3 to 1 molar relationship between ammonia and ammonium phosphate, the moles of ammonia result:

$n_{NH_3}=0.060mol(NH_4)_3PO_4*\frac{3molNH_3}{1mol(NH_4)_3PO_4}\\n_{NH_3}=0.18molNH_3$

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2 years ago

What is the possible formula of AC if A has 2 valence electrons and C has 7 valence electron?

Brut [27]

AC2

A will lose 2
C will gain 1

Need two Cs to match A

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2 years ago

13. An aerosol spray can of deodorant with a volume of 0.410 L contains 3.0 g of propane gas (CH3) as propellant. What is the pr

qaws [65]

Answer: The pressure in the can is 4.0 atm

Explanation:

According to ideal gas equation:

$PV=nRT$

P = pressure of gas = ?

V = Volume of gas = 0.410 L

n = number of moles = $\frac{\text {given mass}}{\text {Molar mass}}=\frac{3.0g}{44.1g/mol}=0.068mol$

R = gas constant = $0.0821Latm/Kmol$

T =temperature = $20^0C=(20+273)K=293K$

$P=\frac{nRT}{V}$

$P=\frac0.068mol\times 0.0820 L atm/K mol\times 293K}{0.410L}=4.0atm$

Thus the pressure in the can is 4.0 atm

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2 years ago