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Effectus [21]
3 years ago
15

An atomic physicist determines that an atom is composed of 8 positively charged particles and has a mass of 15 amu. Which is the

best conclusion that can be drawn? The atom has 7 neutrons and 8 protons. The atom has 7 electrons and 8 protons. The atom has 8 neutrons and 7 electrons. The atom has 8 electrons and 7 protons.
Chemistry
2 answers:
Alenkinab [10]3 years ago
8 0

Answer: The atom has 7 neutrons and 8 protons.

Explanation: On Edhenuity!!!!!!!!!

GarryVolchara [31]3 years ago
6 0

Answer:

the answer to the question is <u><em>A</em></u>

Explanation:

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2. Calculate the mass of 5.35 mole of H2O2.
Dmitry_Shevchenko [17]

Answer:

5.35m H2O2 x 34.02g/1m H2O2 = 182g H2O2

Explanation:

6 0
3 years ago
How many moles are in 110 grams of nahco3
yuradex [85]
Molar mass NaHCO₃ = 23 + 1 + 12 + 16 x 3 = 84 g/mol

1 mole ---------- 84 g
? mole ---------- 110 g

moles NaHCO₃ = 110 . 1 / 84

moles NaHCO₃ = 110 / 84

= 1.309 moles

hope this helps!
4 0
3 years ago
How is 8.2 x 10^4 - 6.3 x 10^3 written in scientific notation
ser-zykov [4K]

Answer:

= 7.57 × 104

(scientific notation)

= 7.57e4

(scientific e notation)

= 75.7 × 103

(engineering notation)

(thousand; prefix kilo- (k))

Explanation:

Just in case this is all of them

6 0
3 years ago
What ion is most closely associated with bases?
Ann [662]
Arrhenius Bases, so that other compounds that have the hydroxyl group (OH⁻)

hope this helps!
5 0
3 years ago
Which of the following metals (M) will form an ionic compound with nitrogen with the general formula M3N2? Hint: Think about how
Basile [38]

Answer:

See explanation

Explanation:

The question is incomplete but i will try to give you all the necessary guide that you need in order to answer the question.

When compounds are formed, atoms exchange valency. The valency of nitrogen is three while that of the metal is two. The exchange yields M3N2.

If the compound has been specifically mentioned to be a metal, then it must be a group two element. It could be any of Mg, Ca, Sr, Ba or Ra. I did not mention Be here because most of its compounds are covalent.

This will help you to answer the complete question.

5 0
3 years ago
Read 2 more answers
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