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3 years ago

Look at the reaction below.

Chemistry

2 answers:

blondinia [14]3 years ago

6 0

Answer: $H_2SO_4(aq)$

Explanation:

An acid is defined as the acid which completely dissociates when dissolved in water and release $H^+$ ions in their aqueous states.

A base is defined as the base which completely dissociates when dissolved in water and releases $OH^-$ ions in their aqueous states.

$Mg$ is an element, $H_2$ is a compound, $MgSO_4$ is a salt formed by combination of acid and base.

The equation for the dissociation of sulphuric acid is given by:

$H_2SO_4(aq.)\rightarrow 2H^+(aq.)+SO_4^{2-}(aq.)$

Brut [27]3 years ago

4 0

Answer:

H2SO4

Explanation:

H2SO4 is actually one of the strongest acids, coming to a pH value very close to 1. Acids transfer their hydrogen ions to other substances, such as water, and usually have hydrogen in their formula. In this case, H2SO4 has hydrogen in its formula and is the acid in this case.

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If you have 5.22*1022 molecules of glucose (C6H12O6) how many grams is this?

lianna [129]

Answer:

5.22*1022 molecules of glucose (C6H12O6) is equal to 15.08 grams

Explanation:

Number of molecule of glucose in one mole $= 6.023 * 10^{23}$

Now mass of one mole of glucose $= 180$ grams

Number of moles in $6.023 * 10^{23}$ molecules of glucose $= 1$

Number of moles in $1$ molecules of glucose = $\frac{1}{6.023 * 10^{23}}$

Number of moles in $5.22 * 10^{22}$ molecules of glucose = $\frac{5.22* 10^{22}}{6.023 * 10^{23}}$ = $0.083$ moles

Weight of $0.083$ moles

$= 0.083 * 180\\= 15.08$ grams

7 0

3 years ago

1 Point

azamat

Answer:

XY → X + Y general reaction represents a decomposition reaction where a molecule is “broken” in two separate molecules

Explanation:

In a double-displacement reaction two molecules will exchange atoms or group of atoms, and it should look like this:

XY + AB → XA + YB

In a combustion reaction molecules are reacting with oxygen generating oxides.

XY + O $_{2}$ → XO + YO

In a single-displacement reaction an atom or a group of atoms in a molecule are replaced by other atoms, and it should look like this:

XY + A → XA + Y

8 0

3 years ago

1.0 x 10^-4 M Solution of HNO3 has been prepared for a laboratory experiment. Calculate the [H+] of this solution.

Naddika [18.5K]

To determine the concentration of [H+] ions in the solution, it is important that we know the dissociation reaction of the solute. For this case, it would be

HNO3 = H+ + NO3-

Therefore, there is 1:1 ratio between HNO3 and H+ ions. The concentration of the ions would be the same as the solute which is 1.0x10^-4 M.

7 0

3 years ago

Give reason for the following:

Vinil7 [7]

Answer:

a) In the presence of light silver nitrate decompose to form silver. hence to prevent the decomposition it is kept in dark coloured bottles.

b) Molybdenum is used in the manufacture of ammonium because molybdenum acts as a promoter which increases the efficiency of the catalyst Iron, resulting in better yield of ammonia.

c) When an iron nail immersed in the solution of copper sulphate than iron displaces copper from the solution of copper sulphate because iron is more reactive than copper. Therefore copper sulphate solution colour changes from blue to pale green.

4 0

3 years ago

Calculate number of silver atoms in

Veseljchak [2.6K]

Answer:

$1.84x10^{24}atoms$

Explanation:

Hello there!

In this case, according to the given information, it turns out possible for us to calculate the number of silver atoms in 330 grams of a silver bracelet by knowing 1 mole of silver has a mass of 108 grams and also contains 6.022x10²³ atoms; thus, the mathematical setup is shown below:

$330g*\frac{1mol}{108g}*\frac{6.022x10^{23}atoms}{1mol}$

Which is equal to:

$1.84x10^{24}atoms$

Regards!

6 0

3 years ago