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4 years ago

What is the change in the freezing point of water when 35.5 g of sucrose is dissolved in 55.0 g of water?

Chemistry

2 answers:

sukhopar [10]4 years ago

7 0

Answer:

the answer is D. 0.326*C

Explanation:

Ainat [17]4 years ago

5 0

The answer is D but I gotta make this answer 20 characters real quick so ignore what I'm saying ja ja ja the cat go wow the I guess on this and I answer it a but the dog go wolf wolf moo

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There are several reagents that can be used to effect addition to a double bond including: acid and water, oxymercuration–demerc

ExtremeBDS [4]

The answer & explanation for this question is given in the attachment below.

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3 years ago

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How many protons and neutrons are in the nucleus of zinc-72

Veronika [31]

Answer:

30 protons

Explanation: Each zinc isotope contains 30 protons, 30 massive, positively charged nuclear particles

30 protons, 34 neutrons, and 30 electrons.

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3 years ago

If the atomic number of an element is 6 and its mass number is 4 how many neutrons are contained in the nucleus? A. 14 B. 6 C. 8

leonid [27]

The answer is B. There are 6 neutrons

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4 years ago

1. How many mg of lithium phosphide are in 18.0 mL of a 1.25 M solution?

Temka [501]

Answer:

1160mg

Explanation:

Molarity = number of moles ÷ volume

According to the information in the question, molarity = 1.25 M, volume = 18.0 mL = 18/1000 = 0.018L

M = n/V

n = M × V

n = 1.25 × 0.018

n = 0.0225moles.

Using mole = mass/molar mass, to find the mass of lithium phosphide (Li3P)

Molar mass of Li3P = 6.9(3) + 31 = 51.7g/mol

mole = mass/molar mass

0.0225 = mass/51.7

mass = 1.16grams.

In milligrams (mg), mass of Li3P = 1.16 × 1000 = 1160mg

6 0

3 years ago

A cylinder contains nitrogen and oxygen under 4.015 atm pressure. The partial pressure of N2 is 2.907 atm. What is the partial p

Aleksandr-060686 [28]

Answer: The partial pressure of the water vapor is 1.108 atm

Explanation:

According to Dalton's law, the total pressure of a mixture of gases is the sum of individual pressures exerted by the constituent gases.

$p_{total}=p_A+p_B$

Thus $p_{total}=p_{N_2}+p_{H_2O}$

Given: $p_{total}$ =4.015 atm

$p_{N_2}$ = 2.907 atm

$p_{H_2O}$ = ?

Thus $4.015=2.907+p_{H_2O}$

$p_{H_2O}=1.108atm$

Thus the partial pressure of the water vapor is 1.108 atm

8 0

3 years ago