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
worty [1.4K]
3 years ago
11

What is Br mass number?

Chemistry
1 answer:
Fofino [41]3 years ago
3 0

Name Bromine

Symbol Br

Atomic Number 35

Atomic Mass 79.904 atomic mass units

Number of Protons 35

Number of Neutrons 45

Number of Electrons 35

Melting Point -7.2° C

Boiling Point 58.78° C

Density 3.119 grams per cubic centimeter

Normal Phase Gas

Family Halogens

Period 4

Cost $4.90 per 100 grams

You might be interested in
If a person had the values for an objects density and volume, what value can be calculated
zavuch27 [327]

Hello there! With the values of density and volume, you would be able to find the object's mass.

Density is found by dividing the mass by the volume, so you could place in the values of the density and the volume to get the mass.

For example:

500 = mass/10

The 500 being density and 100 being volume. You would use simple math rules and multiply 10 by 500, and you'd get 5000, therefore using the density and volume values and giving you the mass.

I hope I could help you and have a great day!

5 0
3 years ago
Read 2 more answers
Help Me Find The Answer. Will Give Brainliest.
Brut [27]

Answer:

Explanation:

Gloves

7 0
3 years ago
What characteristics do the elements in a group share? In a period, share?
Katyanochek1 [597]

Answer:

The elements in same period have same principle quantum number or energy shell.

The elements in same group shows similar chemical and properties.

Explanation:

Inn group:

The elements in same group i.e present in vertical column shows similar chemical properties.

The elements in same group having same number of valance electrons. while in chemical reaction bonds are break and formed and valance electrons are involved. That's why elements in same group having same number of valance electrons and shows similar chemical properties.

In period:

While as we move from left to right the number of valance electron increase by one in every element. But the electron is added in same shell which means that their physical and chemical properties are different but principal quantum number is same.

3 0
3 years ago
A dialysis unit requires 70000 mL of distilled water. How many gallons of water are needed? (1 gal = 4 qt)
Lady bird [3.3K]

Answer: 19.25 gallons

Explanation: 1 ml = 0.0011 quart

Given:  4 quarts = 1 gallon

Thus if 1 ml is equal to 0.0011 quart

70000 ml  is equal to =\frac{0.0011}{1}\times 70000=77quart

Now if 4 quarts is equal to 1 gallon.

77 quarts is is equal to=\frac{1}{4}\times 77=19.25gallons




5 0
3 years ago
Read 2 more answers
The standard enthalpy change for the following reaction is 232 kJ at 298 K. 2 H2CO(g) 2 C(s,graphite) + 2 H2(g) + O2(g) ΔH° = 23
Georgia [21]

Answer:  The standard enthalpy change for this reaction is -116 kJ

Explanation:

According to Hess’s law of constant heat summation, the heat absorbed or evolved in a given chemical equation is the same whether the process occurs in one step or several steps.

According to this law, the chemical equation can be treated as ordinary algebraic expression and can be added or subtracted to yield the required equation. That means the enthalpy change of the overall reaction is the sum of the enthalpy changes of the intermediate reactions.

The given chemical reaction is,

2H_2CO(g)\rightarrow 2C(s, graphite)+2H_2(g)+O_2(g)

\Delta H^0=232KJ

Now we have to determine the value of \Delta H for the following reaction i.e,

)C(s, graphite)+H_2(g)+\frac{1}{2}O_2(g)\rightarrow H_2CO(g) \Delta H^0'=?

According to the Hess’s law, if we reverse the reaction then the \Delta H will change its sign and if we half the reaction, then the

So, the value \Delta H^0' for the reaction will be:

\Delta H^0'=\frac{(-232kJ/mole)}{2}=-116kJ

Hence, the standard enthalpy change for this reaction is -116 kJ

7 0
3 years ago
Other questions:
  • Use the Periodic Table of the Elements to answer
    10·1 answer
  • Select the correct answer.
    7·2 answers
  • What happens to the individual molecules of a liquid as they gain enough kinetic energy to escape the surface of the liquid?
    14·2 answers
  • What is the formula of hexaaquamanganese(ii) sulfate? express your answer as a chemical formula?
    11·1 answer
  • A mileage test is conducted for a new car model. Thirty randomly selected cars are driven for a month and the mileage is measure
    13·1 answer
  • Is a metal baking tray a conductor or insulator or a radiator
    12·2 answers
  • Darwin called this idea of certain traits being selected in order for an organism to reproduce sexual selection. In crickets and
    5·2 answers
  • What is the name of a length that is 100 times larger than a millimeter
    11·1 answer
  • 0.2344 mol CH3OH/0.0500=
    11·1 answer
  • What happens when an electron absorbs energy?
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!