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Annette [7]
3 years ago
5

How can you find the amount of valence electrons an atom of an element contains?

Chemistry
1 answer:
seraphim [82]3 years ago
3 0

Answer:

For neutral atoms, the number of valence electrons is equal to the atom's main group number. The main group number for an element can be found from its column on the periodic table. For example, carbon is in group 4 and has 4 valence electrons. Oxygen is in group 6 and has 6 valence electrons.

Explanation:

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A client is undergoing therapy in a whirlpool unit that has been plugged into an extension cord. What is this an example of?
frez [133]

Using extension or flexible cords improperly

Explanation:

A client undergoing therapy in a whirlpool unit plugged into an extension cord demonstrates a wrong and improper use of extensions and flexible cords. This is not a safe way to connect an electrical circuit.

  • Unless a Ground Fault Circuit Interrupter is used, the client is at a risk of suffering from electrocution.
  • The Ground Fault Circuit Interrupter is able to detect leakages in the circuit and breaks it off.

learn more:

electric current brainly.com/question/4438943

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4 0
3 years ago
Find mass of 3 moles of water​
EleoNora [17]

Answer:

54 g

Explanation:

1 mole of water = H2O

mass of 1 mole of H2O= mass of h2 + mass of o

= 2× mass of h +mass of o

= 2×1+16 =18 g

1 mole of water = 18g

3moles of water = 18×3g= 54g

6 0
3 years ago
Name the type of chemical bonding in potassium bromide
Rzqust [24]
The bond between Potassium and Bromide is considered iconic, Because of how they lose electrons and become ions when they bond together.
5 0
3 years ago
Lewis acids and bases are most closely associated with which process?
Evgen [1.6K]
<span>Lewis acids and bases are most closely associated with ELECTRON TRANSFER. A Lewis acid is defined as as a chemical specie that can accept an electron pair from a Lewis base to form a Lewis adduct while a Lewis base is defined as a specie which can donate an electron pair to a Lewis acid or an acceptor compound. Thus, Lewis base and acid has to do with electrons transfer.</span>
8 0
3 years ago
Read 2 more answers
A chemist adds of a M barium acetate solution to a reaction flask. Calculate the mass in grams of barium acetate the chemist has
tekilochka [14]

Complete Question:

A chemist adds 55.0 mL of a 1.1M barium acetate (Ba(C2H3O2)2) solution to a reaction flask. Calculate the mass in grams of barium acetate the chemist has added to the flask. Round your answer to 2 significant digits.

Answer:

15 g

Explanation:

The concentration of the barium acetate is given in mol/L (M), thus, the number of moles (n) of it is the concentrantion multiplied by the volume (55.0 mL = 0.055 L):

n = 1.1 * 0.055

n = 0.0605 mol

The molar mass of the substance can be calculated by the sum of the molar mass of each element, which can be found at the periodic table. Thus:

Ba = 137.33 g/mol

C = 12.00 g/mol

H = 1.00 g/mol

O = 16.00 g/mol

Ba(C2H3O2)2 = 137.33 + 4*12 + 6*1 + 4*16 = 255.33 g/mol

The molar mass is the mass divided by the number of moles, thus the mass (m) is the molar mass multiplied by the number of moles.

m = 255.33 * 0.0605

m = 15.45 g

Rounded by 2 significant digits, m = 15 g.

7 0
3 years ago
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