3 years ago

I need some good help

Chemistry

2 answers:

Fed [463]3 years ago

8 0

Answer:

felt that.__________

Alexeev081 [22]3 years ago

4 0

Answer:

lol

Explanation:

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3 years ago

Question 1:

Alona [7]

Question 1:

(a) Sulfurous acid: H2SO3

Sulfuric acid: H2SO4

(b) Nitrous acid: H2NO2

Nitric acid: H2NO3

Question 2:

To calculate the pH, based on concentration of H+ ions, there is one formula:

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So the pH of this solution is

$- log_{10}( {10}^{ - 9} ) = 9$

(the solution is basic).

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3 years ago

A mixture was found to contain 1.05 g if silicone dioxide, 0.69 g cellulose, 1.82 g of calium carbonate. what percent of calcium

djverab [1.8K]

1,05+ 0,69 + 1,82 = 3,56g of mixture

%CaCO₃: 1,82/3,56×100% = 0,5112×100% = 51,12%

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3 years ago

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kaheart [24]

Ok Hello I"m joining to.

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2 years ago

HELP a #QUEEN out pls??

Anastaziya [24]

Answer:

what the acctual fhuck typa chinese algorithim is dis, youve got me bamboozled frffr

Explanation:

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__5___SiO2 + ___2___CaC2 → __5___Si + ____2___CaO + __4___CO2

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3 years ago

I need some good help ​

I need some good help