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
solmaris [256]
2 years ago
13

(20ptS) Identify the net charge of an ion with 7 protons, 8 neutrons, and 10 electrons

Chemistry
1 answer:
xenn [34]2 years ago
3 0

Answer:

-3, 34, 34, 9

Explanation:

charge = number of electrons - number of protons

mass number = number of protons + number of neutrons

number of protons = number of electrons

atomic number = number of protons

You might be interested in
This chemical equation represents a chemical reaction.
murzikaleks [220]

Answer: NaCN and HBr

Explanation:

3 0
3 years ago
Read 2 more answers
A way of describing a chemical change that indicates what substances were present before the change and what substances are pres
musickatia [10]

Answer:

\\ \rm\dashrightarrow Chemical\: Equation

Explanation:

When a chemical change happens or chemical reaction happens something yields at reactants and something at products

Representing them is called chemical equation

7 0
2 years ago
Is crumpling a piece of paper chemical changes
kenny6666 [7]
No, because you are not changing the chemical make-up of the paper
8 0
3 years ago
Read 2 more answers
Calculate the density of air at 100 Deg C and 1 bar abs. Use the Ideal Gas Law for your calculation and give answer in kg/m3. Us
madam [21]

Answer:

d=0.92\frac{kg}{m^{3}}

Explanation:

Using the Ideal Gas Law we have PV=nRT and the number of moles n could be expressed as n=\frac{m}{M}, where m is the mass and M is the molar mass.

Now, replacing the number of moles in the equation for the ideal gass law:

PV=\frac{m}{M}RT

If we pass the V to divide:

P=\frac{m}{V}\frac{RT}{M}

As the density is expressed as d=\frac{m}{V}, we have:

P=d\frac{RT}{M}

Solving for the density:

d=\frac{PM}{RT}

Then we need to convert the units to the S.I.:

T=100^{o}C+273.15

T=373.15K

P=1bar*\frac{0.98atm}{1bar}

P=0.98atm

M=28.9\frac{kg}{kmol}*\frac{1kmol}{1000mol}

M=0.0289\frac{kg}{mol}

Finally we replace the values:

d=\frac{(0.98atm)(0.0289\frac{kg}{mol})}{(0.082\frac{atm.L}{mol.K})(373.15K)}

d=9.2*10^{-4}\frac{kg}{L}

d=9.2*10^{-4}\frac{kg}{L}*\frac{1L}{0.001m^{3}}

d=0.92\frac{kg}{m^{3}}

5 0
3 years ago
On which of these physical features are industrial diamonds mined?
Gelneren [198K]
The answer to the given question above is GUIANA SHIELD. This is the physical feature that industrial diamonds are mined. Guiana shield is actually located in northeast South America. This is considered to be one of the <span>cratons of the South American Plate. This location is said to have an abundant deposits of diamonds and other minerals.</span>
4 0
3 years ago
Other questions:
  • How many moles of copper are needed to react with sulfur to produce 0.25 moles of copper (I) sulfide
    13·1 answer
  • 6. Identify each element as a metal, metalloid, or nonmetal
    13·1 answer
  • In which process does a solid change directly into a vapor?
    9·1 answer
  • The Hot-Wheel car was accelerating across the table at 0.25 meters per second squared (m/s^2) from an applied force of 10 N. Wha
    14·1 answer
  • Which one of the following combinations cannot function as a buffer solution?
    11·1 answer
  • The choices are position, magma, power plants, nuclear, light, food and fuel, and solar
    12·1 answer
  • How do atoms explain the pattern that the mass of the products always equals the mass of the reaction?
    15·1 answer
  • Two mice have different parents. They both have the same protein for whisker thickness in their cells.
    10·1 answer
  • What is a rule for determining the mass number of an atom or ion?
    10·1 answer
  • this is liquid water in the form of droplets that have condoned from atmospheric water vapor and than precipitated
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!