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3 years ago

Which of the following statements describes the elements in group 16 of the periodic table?

Chemistry

1 answer:

Vadim26 [7]3 years ago

3 0

Answer:

Explanation:

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A chemical equation can be used to solve stoichiometry problems provided that it....

Zolol [24]

Answer:

includes the coefficients that are needed for balancing the equation.

Explanation:

3 0

3 years ago

Read 2 more answers

0.415 g of an unknown triprotic acid are used to make a 100.00 mL solution. Then 25.00 mL of this solution is transferred to an

Arturiano [62]

Answer:

Explanation:

Initial burette reading = 1.81 mL

final burette reading = 39.7 mL

volume of NaOH used = 39.7 - 1.81 = 37.89 mL .

37.89 mL of .1029 M NaOH is used to neutralise triprotic acid

No of moles contained by 37.89 mL of .1029 M NaOH

= .03789 x .1029 moles

= 3.89 x 10⁻³ moles

Since acid is triprotic , its equivalent weight = molecular weight / 3

No of moles of triprotic acid = 3.89 x 10⁻³ / 3

= 1.30 x 10⁻³ moles .

8 0

3 years ago

The equation K + NaOH => Na + KOH should it react, true or false?

Andru [333]

Answer:

yes it should react yoyoyoyoyo

3 0

3 years ago

Using the balanced equation below,

bezimeni [28]

<u>Answer:</u> The mass of manganese(III) oxide produced is 113.03 g

<u>Explanation:</u>

The number of moles is defined as the ratio of the mass of a substance to its molar mass. The equation used is:

$\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}}$ ......(1)

Given mass of zinc = 46.8 g

Molar mass of zinc = 65.38 g/mol

Plugging values in equation 1:

$\text{Moles of zinc}=\frac{46.8g}{65.38g/mol}=0.716 mol$

The given chemical equation follows:

$Zn+2MnO_2+H_2O\rightarrow Zn(OH)_2+Mn_2O_3$

By the stoichiometry of the reaction:

If 1 mole of zinc produces 1 mole of manganese(III) oxide

So, 0.716 moles of zinc will produce = $\frac{1}{1}\times 0.716=0.716mol$ of manganese(III) oxide

Molar mass of manganese(III) oxide = 157.87 g/mol

Plugging values in equation 1:

$\text{Mass of manganese(III) oxide}=(0.716mol\times 157.87g/mol)=113.03g$

Hence, the mass of manganese(III) oxide produced is 113.03 g

7 0

3 years ago

A girl pose a spoonful of sugar into a glass of warm water water into the sugar disappears when she choose the water you notice

Alex_Xolod [135]

Answer:

Solution!

Explanation:

Becuase the water didn't change when the sugar was mixed in. :)

6 0

3 years ago