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vesna_86 [32]
3 years ago
5

How were the compounds that formed when calcium ion solution was mixed with the anion solutions different from the compounds tha

t formed when barium ion solution was mixed with the anion solutions?

Chemistry
1 answer:
givi [52]3 years ago
6 0

A confirmatory test of sodium hydroxide and potassium chromate can be used to distinguish between a solution of calcium ion and barium ion.

The test for cations can be used to distinguish calcium ion from barium ion.

  • Calcium ion (Ca²⁺) forms a white precipitate with a drop of sodium hydroxide which is insoluble in excess.
  • Barium ion (Ba²⁺) forms a yellow precipitate with potassium chromate.

Thus, a confirmatory test of sodium hydroxide and potassium chromate can be used to distinguish between a solution of calcium ion and barium ion.

Learn more about about confirmatory test of cations here: brainly.com/question/1969246

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a sample of gas with a volume of 30.0 ml at 25.0 °c is heated to 50.0 degrees celsius. what is the new volume of the gas?
mart [117]

Answer : The new volume of the gas is, 32.5 mL

Explanation :

Charles' Law : It states that volume of the gas is directly proportional to the temperature of the gas at constant pressure and number o moles of gas.

Mathematically,

\frac{V_1}{T_1}=\frac{V_2}{T_2}

where,

V_1\text{ and }T_1 are the initial volume and temperature of the gas.

V_2\text{ and }T_2 are the final volume and temperature of the gas.

We are given:

V_1=30.0mL\\T_1=25.0^oC=(25.0+273)K=298K\\V_2=?\\T_2=50.0^oC=(50.0+273)K=323K

Putting values in above equation, we get:

\frac{30.0mL}{298K}=\frac{V_2}{323K}\\\\V_2=32.5mL

Therefore, the new volume of the gas is, 32.5 mL

4 0
3 years ago
Por ser la materia electrica neutra ¿como debe de ser el numero de electrones y el de protones?
kvasek [131]

Answer:

Deben ser de igual número.

Explanation:

8 0
2 years ago
Percent occurrence and isotope masses for oxygen: 99.759 % at 15.99491 amu, 0.037% at 16.99913 amu and 0.204% is at what amu val
Masja [62]

Answer:

15.99937 is the value of this question answer

4 0
3 years ago
Which of these statements is correct?
Crazy boy [7]

Answer:

C

Explanation:

3 0
3 years ago
What is the hydrophobic effect? what types of atoms are most likely to be found in portions of molecules or entire molecules tha
HACTEHA [7]
Hydrophobic in simple terms is the "fear" of water.

In chemistry, Ionic salts are technically hydrophilic as they will dissolve in water.
most fats and oils or triesters won't why?

salts are made from ions and their structure contain polar bonds Na+ and Cl-
Fats and oils tend to not have these.

Fats and oils contain many carbon covalent bonds which are non-polar which tend to make the molecule non-polar as a whole, therefore, it can't dissolve in water and is said to be hydrophobic.

Hope that heps :)
NB included a diagram to help.

7 0
3 years ago
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