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nevsk [136]
4 years ago
6

Which of the following compounds has the highest boiling point?

Chemistry
1 answer:
anastassius [24]4 years ago
7 0

Answer:

Butanoic acid

Explanation:

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An alloy contains 57 g of silver and 20g of copper what is the percentage silver in the alloy
Allushta [10]
Total weight of alloy is
67 + 20 = 87 g
67 g of which is gold
So % gold is 67/87* 100 = 77.01%
4 0
3 years ago
Differentiate between acids and bases on the basis of their pH values.
kompoz [17]

Answer:

acid; there ph value is mostly 7

base: there ph value can be more than 7 or less than 7

4 0
3 years ago
Read 2 more answers
1. Metallic strontium crystallizes in a face-centered cubic lattice, with one Sr atom per lattice point. If the edge length of t
Zarrin [17]

Answer:

r=215pm

N_{Mn}=20

Explanation:

From the question we are told that:

Edge length of the unit cell l=608pm

a)

Generally the equation for The relationship between edge length and radius is mathematically given by

4r=\sqrt{2a}

Therefore

4r=\sqrt{2*608}

r=\frac{\sqrt{2*608}}{4}

r=215pm

b)

From the question we are told that:

Density \rho=7.297

Edge length of l=630.0 pm=>630*10^-{10}

Therefore Volume  is given as

V=l^3

V=630*10^-{10}^3

V=2.50047*10^{−22}

Generally the equation for Mass is mathematically given by

m=Volume*density

m=V*\rho

m=2.50047*10^{−22}*7.297

m=1.83*10^{-21}g

Therefore Molarity is given as

n=\frac{M}{Molar M}

n=\frac{1.83*10^{-21}g}{55}

n=3.32*10^{-23}

Finally The atoms in a unit cell is

N_{Mn}=Moles*Avogadro\ constant

N_{Mn}=3.32*10^{-23}*6.023*10^{23}

N_{Mn}=20

7 0
3 years ago
3. The basic unti of matter *<br> proton<br> neutron<br> electron<br> atom
mamaluj [8]

Answer:

Your answer is ATOM

Explanation:

Atoms consist of a nucleus made of protons and neutrons orbited by electrons. Atoms are the basic units of matter and the defining structure of elements.

Basically, they are the building block of life because everything made of matter has atoms

8 0
3 years ago
When atoms join together, the bond is either covalwnt or ionic
krek1111 [17]

it is a covalent bond


5 0
3 years ago
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