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
Anestetic [448]
3 years ago
15

Someone please help me with this

Chemistry
1 answer:
Inessa05 [86]3 years ago
5 0

Answer:

With what???

Explanation:

I don't see anything.

You might be interested in
Calculate the molarity of a solution consisting of 25.0 g of KOH in 3.00 L of solution.
melomori [17]

Answer:

0.15M

Explanation:

The equation for molarity is M= n/L. Where "M" is Molarity, "n" is the number of moles of solute, and "L" is the total liters in solution.

You need to calculate the number of moles from the given grams. The molar mass of KOH is (39.098+ 16 +1.008)= 56.106g. To calculate the mols of KOH, \frac{25.0g}{1} × \frac{1 mol}{56.106g} = 0.44558... mol, you see that the grams unit cancel out leaving you with mol as the unit.

The volume is given in L already so no need to do any conversion. M= \frac{0.4558mol}{3.00L} = 0.1485M ≈ 0.15M

5 0
2 years ago
The electron configuration of an element is 1s2 2s2 2p1. How many valance electrons does the element have. 1,2,3 or 4
kotykmax [81]

Answer:

3

Explanation:

5 0
3 years ago
Read 2 more answers
How are the atomic number and the number of protons related to each other? how do the number of protons, number of neutrons, and
jarptica [38.1K]

The atomic number (Z) uniquely identifies a chemical element. In an uncharged atom, the atomic number is also equal to the number of electrons.

The atomic number, Z, should not be confused with the mass number, A, which is the number of nucleons, the total number of protons and neutrons in the nucleus of an atom.

In this video Kristine Born explains this two concepts in more detail.

5 0
3 years ago
CaC12 * 3H20 is correctly named
ki77a [65]

Answer:

calcium chloride deihydrate

4 0
3 years ago
NH3 is a weak alkali that does not dissociate fully into its solution. Which of the following is true about NH3?
ad-work [718]
<h2>NH3 is a weak alkali that does not dissociate fully into its solution. Which of the following is true about NH3? </h2><h2> </h2><h2>A. It has a very low pH. </h2><h2>B. It's dissociation is a reversible reaction. </h2><h2>C. It has a high H+ concentration. </h2><h2>D. It will release all of its OH- ions.</h2>

Explanation:

<h3>NH3 is a weak alkali that does not dissociate fully into its solution: It's dissociation is a reversible reaction. </h3><h3></h3>

Reactions are also :

  • Reversible
  • Irreversible

Reversible reaction

A reaction in which products can combine back to give reactants under same given condition .

Example : N₂+H₂-------NH₃

Irreversible reaction

A reaction in which the products cant combine back to give reactants under same set of conditions .

Example : Burning of paper

3 0
3 years ago
Read 2 more answers
Other questions:
  • What is the 10% rule? What is its significance? Why is energy lost?
    7·1 answer
  • When 14.8 g KOH is dissolved in 85.6 g of water in a coffee-cup calorimeter, the temperature rises from 19.3 °C to 32.76 °C. Wha
    8·1 answer
  • Consider an atom that has an electron in an excited state. The electron falls to a lower energy level. What effect does that hav
    12·1 answer
  • Electrons orbit around the nucleus of atoms in allowed energy states. This is the basis of the theory of which scientist?
    12·1 answer
  • Which chemical has the greatest effect of neurotransmitter release?
    10·1 answer
  • On a ceiling, there were tiny droplets of blood less than 1 mm in diameter. the victim was lying in a pool of blood. no other ma
    7·1 answer
  • What kind of chemical reaction is this?
    14·1 answer
  • Can anyone explain this to me?
    14·1 answer
  • PLS HELP A gas has a volume of 250 mL at 96.5 kPa. What will the pressure of the gas be if the
    14·1 answer
  • How can a short-term environmental change, such as a drought or a flood, affect organisms?
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!