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liubo4ka [24]
2 years ago
10

Which of the following atoms has the same number of neutrons as 19F? (2 points)

Chemistry
1 answer:
Lelu [443]2 years ago
5 0
I dont know the answer choices but if isotopes is there then go with Isotopes

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What characteristic of an element’s atoms always determines the element’s identity?
dmitriy555 [2]

Answer:

Number of protons

Explanation:

There are three sub atomic particles. These are;

- Protons

- Electrons

- Neutrons

Among these three particles, only one determines the identity of the element. This is the Protons. The number of protons which is also called the atomic number determines the identity of an element. For instance, atom with one proton is Hydrogen and n other element can have atomic number of one.

6 0
3 years ago
What is the total ionic equation for cuso4+2naoh>>cu(oh)2+na2so4
iVinArrow [24]

Answer:

CuSO4 + 2 NaOH = Cu(OH)2 + Na2SO4

3 0
3 years ago
Which of the following chemical reactions will produce a precipitate?
Ilya [14]

Answer:

C

Explanation:

5 0
2 years ago
A chemist adds of a M zinc nitrate solution to a reaction flask. Calculate the mass in grams of zinc nitrate the chemist has add
weqwewe [10]

corrected question: A chemist adds 135mL of a 0.21M zinc nitrate solution to a reaction flask. Calculate the mass in grams of zinc nitrate the chemist has added to the flask. Round your answer to significant digits.

Answer:

5.37g

Explanation:

0.21M means ; 0.21mol/dm³

1dm³=1L , so we can say 0.21mol/L

if 0.21mol of Zinc nitrate is contained in 1L of water

x   will be contained in 135mL of water

x= 0.21*135*10³/1

=0.02835moles

number of moles=  mass/ molar mass

mass= number of moles *molar mas

molar mass of Zn(NO₃)₂=189.36 g/mol

mass= 0.02835 *189.36

mass=5.37g

3 0
2 years ago
Which metals have similar chemical properties? Check all that apply. barium
rodikova [14]
Alkina metals all have the similar proteries
6 0
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