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jekas [21]
3 years ago
14

Which of these solids is insoluble in water?

Chemistry
2 answers:
CaHeK987 [17]3 years ago
8 0

Answer:

A

Explanation:

Sand is not soluble in H2O

eimsori [14]3 years ago
5 0
The answer would be A) sand, it is not soluble in water
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Which of the following additions to alkenes occur(s) specifically in an syn fashion?
BlackZzzverrR [31]

Answer:

E) A, B, and C

Explanation:

Syn addition refers to the addition of two substituents on the same face or side of a double bond. This differed from anti addition which a occurs across opposite face of the double bond.

Hydrogenation, hydroboration and dihydroxylation all involve syn addition to the double bond, hence the answer chosen above.

8 0
2 years ago
What is the number of moles in 42 g of NaCl?
olganol [36]
B. 0.72 mol NaCl

http://www.convertunits.com/from/grams+NaCl/to/moles
8 0
3 years ago
Read 2 more answers
I have my chemistry EOC tomorrow, and I need to know how to calculate the molar mass of a compound. Specifically ones set up lik
yuradex [85]

Answer:

357.475

Explanation:

First you need periodic table and you have to look for mass

Fe = 3 x 55.845 = 167.535

P = 2  x 30.97 = 61.94

o = 4 x 2 so 8 oxygen =  8 x 16 = 128

add all and you get 357.475

6 0
3 years ago
How many particles are in a 151 g sample of Li2O?
neonofarm [45]

Answer:

3.052 × 10^24 particles

Explanation:

To get the number of particles (nA) in a substance, we multiply the number of moles of the substance by Avogadro's number (6.02 × 10^23)

The mass of Li2O given in this question is as follows: 151grams.

To convert this mass value to moles, we use;

moles = mass/molar mass

Molar mass of Li2O = 6.9(2) + 16

= 13.8 + 16

= 29.8g/mol

Mole = 151/29.8g

mole = 5.07moles

number of particles (nA) of Li2O = 5.07 × 6.02 × 10^23

= 30.52 × 10^23

= 3.052 × 10^24 particles.

4 0
2 years ago
When an electric current is flowing through a wire, the force deflecting the charged particles is greatest when the wire is ____
nlexa [21]

Answer:

C.) perpendicular

Explanation:

A particle with an electric charge experiences the maximum deflecting force when it is positioned perpendicular to the magnetic field.

4 0
3 years ago
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