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
nikitadnepr [17]
4 years ago
7

I really need help. Could you pls give me the answers to the questions.

Chemistry
1 answer:
marissa [1.9K]4 years ago
3 0

Answer:

4.Electronic configuration

Explanation:

The number of digits in the electronic configuration tells you how many shells are in an atom.

You might be interested in
Matter is anything that has mass and takes up space. Which units of measurement can you use to describe these two properties?
Sindrei [870]

Answer is: D. kilograms and cubic millimeters .

Kilogram (symbol: kg) is the base unit of mass (anything that has mass in this question) in the International System of Units and cubic millimeter (symbol: mm³) is volume measurement unit (takes up space).

Second (symbol: s) is the base unit of time in the International System of Units and kilometer (symbol: km) is a unit of length in the metric system.

Gram (symbol: g) is a metric system unit of mass, but millimeter (abbreviated: mm) is an unit of distance in the metric system.

Yard (abbreviation: yd) is an unit of length and liter (symbol: l) is metric unit of capacity.

5 0
3 years ago
Do ionic compounds or covalent compounds conduct electricity
Liula [17]

None because Covalent compounds don’t conduct electricity because they are formed between the non metal atoms by sharing of electrons. The Covalent compounds haves no free electrons and also no ions and hence they do not conduct electricity. That is why they do not conduct electricity.

4 0
3 years ago
Ni(OH)3 +<br> Pb(SO4)2 →__Pb(OH)4 +<br> Ni2(SO4)3<br> what is the balance
Elena-2011 [213]

Answer:

4+3=3+3+2

Explanation:

4Ni(oh)3+3pb(so4)2=3pb(oh)4+2Ni2(so4)3

3 0
3 years ago
What is the pH of an acetic acid solution where the concentration of acetic acid is 2 mM and the concentration of sodium acetate
schepotkina [342]

Answer:

pH = 5.76

Explanation:

We can solve this problem by using<em> Henderson-Hasselbach's equation</em>:

pH = pKa + log\frac{[SodiumAcetate]}{[AceticAcid]}

We are already know all the required information, thus we<u> input the data given by the problem</u>:

pH = 4.76 + log(20/2)

And finally <u>calculate the pH</u>:

pH = 5.76

The pH of that acetic acid solution is 5.76.

6 0
3 years ago
3) Explain the working principle of catalyst for both rate of reaction and equilibrium reaction . show by means of graphical rep
victus00 [196]

Explanation:

A catalyst has no effect on the equilibrium state, but it enables equilibrium to be reached more quickly by decreasing the “energy of activation”. In fact, a catalyst affects forward and reverse rates equally.

8 0
2 years ago
Other questions:
  • What is the mass of 6.80 moles<br> H2O?<br> (H = 1.008 g/mol, O = 16.00 g/mol)<br> [?]g<br> Enter
    5·1 answer
  • Upon decomposition, one sample of magnesium fluoride produced 1.65 kg of magnesium and 2.56 kg of fluorine. A second sample prod
    5·1 answer
  • Cardiac muscle causes movement in the .
    11·2 answers
  • Does the formation of all chemical bonds is based on sharing of electrons?
    14·1 answer
  • Determine how many carbon dioxide (CO2) molecules are produced if 8.45 x 1023 molecules of water (H2O) are produced 2 C2H6 (g) +
    10·1 answer
  • Which of the following is a unit of time?<br><br> km<br> hr<br> km/hr<br> mi
    9·1 answer
  • What is invection or the definition
    8·1 answer
  • Why don't we use the plutonium (Pu) from reprocessed/used nuclear fuel? There are 2 correct answers. (this is for my earth scien
    5·1 answer
  • Explain how the water cycle is a reversible process.
    13·1 answer
  • In a metallic bond electrons are _______________. A. transferred C. shared B. delocalized D. lost
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!