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dimulka [17.4K]
3 years ago
10

What are the atomic number and mass number of this atom

Chemistry
1 answer:
lina2011 [118]3 years ago
5 0
No diagram is given therefore I cannot answer however, use this for reference.
The atomic mass of an atom would be the number of protons PLUS the number of neutrons. Because this atom shown has 6 protons and 6 neutrons, they add up to 12. In this case, the atomic mass of this atom is 12. Atomic number is the number of protons in an atom, in this case it is 6. The atomic number is 6.

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Two descriptions about physical quantities are given below:
Mashcka [7]

Answer:

quantity A is mass and quantity B is wieght

5 0
3 years ago
Oxalic+acid+is+a+toxic+substance+used+by+laundries+to+remove+rust+stains.+its+composition+is+26.7%+c,+2.2%+h,+and+71.1%+o+(by+ma
Anettt [7]

The molecular formula of a compound is C₂H₂O₄.

Take 100 grams of compound:

1) ω(C) = 26.7% ÷ 100% = 0.267

m(C) = ω(C) × m(compound)

m(C) = 0.267 × 100 g.

m(C) = 26.7 g.

n(C) = m(C) ÷ M(C).

n(C) = 26.7 g ÷ 12 g/mol.

n(C) = 2.22 mol; amount of carbon

2) ω(H) = 2.2 % ÷ 100% = 0.022

m(H) = 0.022 × 100 g.

m(H) = 2.2 g.

n(H) = 2.2 g ÷ 1 g/mol.

n(H) = 2.2 mol; amount of hydrogen

3) ω(O) = 71.1 % ÷ 100%.

ω(O) = 0.711

m(O) = 0.711 × 100 g

m(O) = 71.1 g

n(O) = 71.1 g ÷ 16 g/mol

n(O) = 4.4 mol; amount of oxygen

4) n(C) : n(H) : n(O) = 2.2 mol : 2.2 mol : 4.4 mol /2.2 mol.

n(C) : n(H) : n(O) = 1 : 1 : 2

M(CHO₂) = 45 amu; empirical formula

90 amu ÷ 45 amu = 2 CHO₂

More info about empirical formula: brainly.com/question/1873039

#SPJ4

5 0
1 year ago
Which number is 0.0069 expressed in scientific notation?
natali 33 [55]
6.9 x 10 to the power of 3 if I am not mistaken.
7 0
3 years ago
Read 2 more answers
An iron block of mass 18 kg is heated from 285 K to 318 K. If 267.3 kJ is required, what is the specific heat of iron?
creativ13 [48]

Answer:

D. 450 J/kgK

Explanation:

Using the formula as follows:

Q = m × c × ∆T

Where:

Q = amount of heat absorbed/released (J)

m = mass of substance (g)

c = specific heat capacity

∆T = change in temperature (°C)

According to the information provided in this question:

Q = 267.3 kJ = 267300J

m = 18kg

∆T = 318K - 285K = 33K

c = ?

Q = m × c × ∆T

c = Q ÷ m∆T

c = 267300 ÷ 18 × 33

c = 267300 ÷ 594

c = 450 J/kgK

7 0
3 years ago
1. At 7 a.m., the science classroom had a temperature of 68°F. By 3 p.m., the temperature had
andrew11 [14]
A because chem is so cool and when you do that it equals the correct answer
8 0
3 years ago
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