1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
ivanzaharov [21]
3 years ago
5

If 60.2 grams of hg combines completely with 24.0 grams of br to form a compound what is the percent

Chemistry
2 answers:
GarryVolchara [31]3 years ago
7 0

The percentage composition of Hg in the given compound is \boxed{71.5{\text{ \% }}}.

Further explanation:

The amount of substance that is present in any mixture is known as concentration. It is expressed in different forms, called as concentration terms. Most of the commonly used concentration terms are as follows:

1. Molality

2. Mole fraction

3. Molarity

4. Parts per million

5. Mass percent

6. Volume percent

7. Percentage composition

The given reaction occurs as follows:

 {\text{Hg}} + {\text{B}}{{\text{r}}_2} \to {\text{HgB}}{{\text{r}}_{\text{2}}}

The formula to calculate the percentage composition of Hg is as follows:

{\text{Percentage composition of Hg}} = \left( {\dfrac{{{\text{Mass of Hg}}}}{{{\text{Mass of HgB}}{{\text{r}}_2}}}} \right){\text{100 \% }}  …… (1)                                    

The formula to calculate the mass of {\text{HgB}}{{\text{r}}_{\text{2}}}  is as follows:

{\text{Mass of HgB}}{{\text{r}}_{\text{2}}} = {\text{Mass of Hg}} + {\text{Mass of B}}{{\text{r}}_{\text{2}}}       …… (2)                                                      

The mass of Hg is 60.2 g.

The mass of {\text{B}}{{\text{r}}_{\text{2}}} is 24 g.

Substitute these values in equation (2).

\begin{aligned}{\text{Mass of HgB}}{{\text{r}}_{\text{2}}} &= 60.2{\text{ g}} + {\text{24 gAC}}\\&= {\text{84}}{\text{.2 g}}\\\end{aligned}  

The mass of Hg is 60.2 g.

The mass of {\text{HgB}}{{\text{r}}_{\text{2}}} is 84.2 g.

Substitute these values in equation (1).

 \begin{aligned}{\text{Percentage composition of Hg}} &= \left( {\frac{{{\text{60}}{\text{.2 g}}}}{{{\text{84}}{\text{.2 g}}}}} \right){\text{100 \% }}\\&= {\text{71}}{\text{.49 \% }}\\&\approx {\text{71}}{\text{.5 \% }}\\\end{aligned}

Therefore the percentage composition of Hg in the compound is 71.5 %.

Learn more:

  1. Calculate the moles of chlorine in 8 moles of carbon tetrachloride: brainly.com/question/3064603
  2. What is the concentration of alcohol in terms of molarity? brainly.com/question/9013318

Answer details:

Grade: Senior School

Subject: Chemistry

Chapter: Concentration terms

Keywords: Hg, Br2, HgBr2, 60.2 g, 24 g, 84.2 g, mass of Hg, mass of Br2, mass of HgBr2, 71.5 %, concentration terms, molality, molarity, mole fraction, percentage composition.

NikAS [45]3 years ago
6 0

Answer is: the percent composition of Hg in the compound is 71.5%.

Balanced chemical reaction: Hg + Br₂ → HgBr₂.

m(Hg) = 60.2 g; mass of the mercury.

m(Br₂) = 24.0; mass of the bromine.

m(HgBr₂) = m(Hg) + m(Br₂).

m(HgBr₂) = 60.2 g + 24 g.

m(HgBr₂) = 84.2 g; mass of the compound.

ω(Hg) = m(Hg) ÷ m(HgBr₂) · 100%.

ω(Hg) = 60.2 g ÷ 84.2 g · 100%.

ω(Hg) = 71.5%.

You might be interested in
What is the correct order of coefficients to balance this equation?
11Alexandr11 [23.1K]

Answer:

2Al + 3CuSO4 → Al2(SO4)3 + 3Cu

Explanation:

I THINK

8 0
2 years ago
Plz help me
AlekseyPX
All of the above would be the answer


mark me brainliest
8 0
3 years ago
Read 2 more answers
A cathode ray tube is made of glass with a small amount of some kind of gas in it. It has metal electrodes at each end to pick u
Butoxors [25]

Answer:

One of the main uses of the cathode ray tube is in the Cathode  ray oscilloscope

Explanation:

Cathode rays are produced when a gas in an evacuated glass at very low pressure and high pressure breaks up into positive and negative ions. the negative ions move towards the anode(positive electrode) while the positive ions move towards the cathode(negative electrode), and there they knock off electrons (which are known as cathode rays) from the metal plate of the cathode.

Cathode ray tubes are mainly used in oscilloscopes, television picture tubes and in computer screens.

The cathode ray oscilloscope is used in a.c. and d.c. voltage measurements, observation of waveforms, time measurements, etc.

5 0
3 years ago
III. For the following four sections: If you are given the formula, name the
serious [3.7K]

Answer:

15.Potassium oxide

16.Calcium chloride

17.Aluminium sulphide

18.CaS

Explanation:

15.K is the chemical symbol of Potassium and generally the name of the non-metal at the end of a formula has the suffix '-ide' and since O is oxygen, the name becomes Potassium oxide.

16. The same applies here. Ca is Calcium and Cl is Chlorine but since its the non-metal at the end, it ends in -ide. So Calcium chloride.

17.The same applies here too. Al is Aluminium and S is Sulphur so Aluminium sulphide.

18. Calcium's symbol is Ca and that of Sulphur is S and that gives the formula CaS.

5 0
3 years ago
Carbohydrate loading Group of answer choices involves a reduction in the intensity of workouts with a corresponding increase in
SOVA2 [1]

Answer:

the correct option would be:

The group of response options implies a reduction in the intensity of the workouts with a corresponding increase in the percentage of carbohydrate intake for several days before a competition.

Since the carbohydrate load is an increase in glycogen reserves as an energy source accompanied by a decrease in muscle demand. This is often used in high-performance activities, where strict competencies are required.

Although today some professionals do not support that, but rather support a diet with carbohydrates and proteins.

Explanation:

Carbohydrate loading increases glycogen reserves, it is accompanied by a muscle rest plan, without fatigue of muscle fibers.

The purpose of this is to exhaust the muscle fibers in maximum demands such as the competencies, ensuring a necessary energy source that supplies this reaction, for which glycogen reserves are needed.

7 0
3 years ago
Other questions:
  • Which direction does the red end of the needle of a compass point?
    10·1 answer
  • A new planet is discovered in a different solar system. The new planet is much like Earth. One difference is that the planet doe
    6·2 answers
  • What is concentration
    8·2 answers
  • Please help Me Answer this
    5·2 answers
  • Help me, I’m failing chem
    7·2 answers
  • Which salt shows the least change in solubility from 0 ⁰ – 100 ⁰ C?
    15·1 answer
  • What can the flow of electrons be easily compared to?
    5·1 answer
  • ILL GIVE BRAINLIEST I NEED THE ANSWER RIGHT AWAY PLEASE SOMEONE
    7·1 answer
  • What factor would speed up a chemical reaction
    8·2 answers
  • 23 grams of sodium reacts with 293 cm 3 of water that is initially at 298 k. it produces an enthalpy change of 197 kj. what is t
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!