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
Pavlova-9 [17]
3 years ago
11

How many electrons does an atom have if the mass number is 31 and the number of neutrons is 16?

Chemistry
1 answer:
Ugo [173]3 years ago
7 0

Answer:

I'm pretty sure it's 15 electrons. Hope this helps :).

Explanation:

You might be interested in
How does hydrogen peroxide bleach hair?
harkovskaia [24]

How does hydrogen peroxide bleach hair? THe h202 molecule sbreak the double bonds in pigment molecules


Question 3

What advantage does hydrogen peroxide have over other bleaching agents such as chlorine gas? Hydrogen peroxide decomposes into nontoxic water and oxygen.  

Question 4

How does hydrogen peroxide play a role in air pollution?Peroxide fragments react with unburned fuel creating eye irritants.

Question 5

In the reaction between melanin and hydrogen peroxide, which substance is oxidized (receives electrons)? melanin is oxidized,hydrogen peroxide is reduced


8 0
4 years ago
According to the following reaction, how many grams of sulfur are formed when 37.4 g of water are formed?
julia-pushkina [17]

Answer:

Mass = 100.8 g

Explanation:

Given data:

Mass of sulfur formed = ?

Mass of water formed = 37.4 g

Solution:

Chemical equation:

2H₂S + SO₂      →   3S + 2H₂O

Number of moles of water:

Number of moles = mass/molar mass

Number of moles = 37.4 g/ 18 g/mol

Number of moles = 2.1 mol

Now we will compare the moles of water and sulfur.

          H₂O         :            S

            2             :          3

           2.1            :         3/2×2.1 = 3.15

Mass of sulfur:

Mass = number of moles × molar mass

Mass = 3.15 mol × 32 g/mol

Mass = 100.8 g

8 0
3 years ago
Bromine (Br) is a halogen.
myrzilka [38]
<span>Bromine tends to form anions when in chemical reactions with metals is your answer :)</span>
5 0
3 years ago
Read 2 more answers
Pls help me if u can. tysm​
xenn [34]

Answer:

For question 1...... First exchange the valencies...

6 0
3 years ago
If 155 J of heat energy is applied to a block of silver weighing 27.9 g, by how many degrees will the temperature of the silver
Brilliant_brown [7]

Answer:

The temperature of silver increase by 23.15 °C.

Explanation:

Given data:

Heat added = 155 j

Mass of silver = 27.9 g

How many degree temperature increase = ?

Solution:

Specific heat capacity:

It is the amount of heat required to raise the temperature of one gram of substance by one degree.

Specific heat capacity of silver is = 0.240 j/g.°C

Formula:

Q = m.c. ΔT

Q = amount of heat absorbed or released

m = mass of given substance

c = specific heat capacity of substance

ΔT = change in temperature

Now we will put the values in formula.

155 j = 27.9 g × 0.240 j/g.°C  × ΔT

155 j = 6.696  j/°C  × ΔT

ΔT  = 155 j /6.696  j/°C

ΔT  = 23.15 °C

3 0
3 years ago
Other questions:
  • Nitric acid in acid rain forms when gaseous nitrogen dioxide pollutant reacts with gaseous oxygen and liquid water to form aqueo
    5·2 answers
  • Use the periodic table to identify the chemical symbol or name for each element below.
    9·2 answers
  • Write a balanced nuclear equation for the beta decay of carbon-11.
    14·2 answers
  • Which molecule is a substrate dipeptide, water or amino acid?
    8·1 answer
  • How many formula units make up 11.2 g of Magnesium Chloride MgCl2?
    7·2 answers
  • The expression 2Ag + SAg2S is called a(n)
    13·1 answer
  • Which part of the atom is so small it contributes very little to the mass of an atom
    8·1 answer
  • Please help me out asap. I’ll give brainliest
    5·1 answer
  • USA test prep wave 1 performance task
    6·1 answer
  • Write a balanced equation for the following reaction:
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!