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Gemiola [76]
4 years ago
7

The number 40 in the name calcium-40 represents

Chemistry
2 answers:
strojnjashka [21]4 years ago
7 0

Answer:

A. the atomic number

Explanation:

It is a member of the alkaline earth family of metals with the atomic symbol Ca, atomic number 20, and atomic weight 40. Calcium is the most abundant mineral in the body and combines with phosphorus to form calcium phosphate in the bones and teeth.

IgorC [24]4 years ago
4 0
A) the atomic number
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H
Harman [31]

Answer:c

Explanation: it's easy

7 0
4 years ago
The energy needed to remove an electron from an atom is called
Arlecino [84]

Ionization energy, also called ionization potential, in chemistry, the amount of energy required to remove an electron from an isolated atom or molecule

3 0
3 years ago
Determine the molar mass of H2O2 (the solute) in a 1.5M aqueous solution of H2O2
Lera25 [3.4K]

Answer:

The molar mass of  H₂O₂ (the solute) in the aqueous solution of

H₂O₂ is 51 g

Explanation:

Given;

H₂O₂ compound

Concentration of aqueous solution of H₂O₂ = 1.5M

The molecular mass of H₂O₂ = (1 x 2) + (16 x 2) = 34 g/mol

Concentration(M) = \frac{Reacting \ mass \ (g)}{Molar \ mass \ (g/m)}

Reacting mass (g) = Concentration x Molar mass

Reacting mass (g) = 1.5 x 34

Reacting mass (g) = 51 g

Therefore, the molar mass of  H₂O₂ (the solute) in the aqueous solution of

H₂O₂ is 51 g

3 0
4 years ago
I WILL Give BRAINLIST Unlike protists, organisms in the group Animalia
anastassius [24]

Answer:

B

Explanation:

B

have cells with a cell wall and are heterotrophic

5 0
3 years ago
Calculate the number of molecules in 4.0 mol H2O.
Juliette [100K]
1 mole H2O ---------------------- 6.02x10²³ molecules
4 moles H2O---------------------  y molecules

y = 4 * 6.02x10²³

y = 2.4x10^24 molecules

answer b

hope this helps!.
7 0
3 years ago
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