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max2010maxim [7]
3 years ago
5

Indicate whether each statement is true or false. Sort these statements into the proper categories.

Chemistry
1 answer:
tankabanditka [31]3 years ago
3 0

Answer:

Answer below

Explanation:

A - false

B - true

C - false

In chemistry there is a principle that polar compounds are soluble with other polar compounds and non-polar compounds are mutually different.

Thus, sodium chloride is an ionic salt (polar) so it is not soluble in the benzene (non-polar) covalent compound, but it is soluble in water that is polar.

The ionic compounds will be soluble in polar solvents and not soluble in non-polar solvents, regardless of whether they are organic or inorganic.

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How many grams of Rb2O is produced from decomposing 24 moles of RbOH ?
solong [7]

Answer:

4486

Explanation:

3 0
3 years ago
How many grams of Br are in 335g of CaBr2
ASHA 777 [7]
The answer is 267.93 g

Molar mass of CaBr2 is the sum of atomic masses of Ca and Br:
Mr(CaBr2) = Ar(Ca) + 2Ar(Br)
Ar(Ca) = 40 g/mol
Ar(Br) = 79.9 g/mol
Mr(CaBr2) = 40 + 2 * 79.9 = 199.8 g/mol

The percentage of Br in CaBr2 is:
2Ar(Br) / Mr(CaBr2) * 100 = 2 * 79.9 / 199.8 * 100 = 79.98%

Now make a proportion:
x g in 79.98%
335 g in 100%
x : 79.98% = 335 g : 100%
x = 79.98% * 335 g : 100%
x = 267.93 g
7 0
3 years ago
Give the formula for the compound formed when sulfur trioxide reacts with water.
Lera25 [3.4K]
Sulphur trioxide reacts with water to form a solution of sulphuric acid.
The equation describing this reaction is:
SO3 + H2O .............> H2SO4

Based on the above equation, the formula of the compound formed when sulphur trioxide reacts with water is: H2SO4
6 0
3 years ago
Number of H in 3(NH4)2Cro4
zlopas [31]

The number of H atoms in 3(NH₄)₂CrO₄ = 24

<h3>Further explanation  </h3>

The empirical formula is the smallest comparison of atoms of compound forming elements.  

A molecular formula is a formula that shows the number of atomic elements that make up a compound.  

(empirical formula) n = molecular formula  

Subscripts in the chemical formula indicate the number of atoms

The compound of 3(NH₄)₂CrO₄ ( 3 molecules of (NH₄)₂CrO₄ ) :

Number of H :

\tt 4\times 2(subscript)\times 3(coefficient,number~of~molecules)=24~atoms

7 0
3 years ago
Which of the following elements is the most<br> reactive?<br> a. Be<br> b. Mg<br> c. Ca<br> d. Sr
Nesterboy [21]

Sr is the most reactive. Correct me if I'm wrong :/

3 0
4 years ago
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