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AURORKA [14]
3 years ago
5

Mass is measured against a standard by using a balance. a. True b. False

Chemistry
2 answers:
jok3333 [9.3K]3 years ago
6 0
Mass is measured against a standard by using a balance. The statement given above is a fact. Therefore the answer among the choices is letter "A" or "A. True". I hope this helps you on your assignment. 
nasty-shy [4]3 years ago
5 0

Answer:

<u><em>The answer is</em></u>: <u>a. True.</u>

<u />

Explanation:

Mass and weight are different properties,<em> which are defined in the field of physics.</em> Mass is a measure of the amount of matter that a body possesses <em>while weight is a measure of the force that is caused on the body, by the gravitational field of another. </em>

The balance is an instrument used to measure the mass of objects.

<u><em>The answer is</em></u>: <u>a. True.</u>

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Upon combustion, a 0.8376 g sample of a compound containing only carbon, hydrogen, and oxygen produces 1.6003 gco2 and 0.9827 gh
Wewaii [24]
Answer is: empirical formula for compound is C₂H₆O.
m(CO₂) = 1,6003 g.
n(CO₂) = m(CO₂) ÷ M(CO₂).
n(CO₂) = 1,6003 g ÷ 44 g/mol.
n(CO₂) = 0,0364 mol.
n(CO₂) = n(C).
m(C) = 0,0364 mol · 12 g/mol = 0,4368 g.
m(H₂O) = 0,9827 g.
n(H₂O) = 0,9827 g ÷ 18 g/mol.
n(H₂O) = 0,0546 mol.
n(H) = 2 · n(H₂O) = 0,1092 mol.
m(H) = 0,1092 mol · 1 g/mol = 0,1092 g.
m(O) = 0,8376 g - 0,4368 g - 0,1092 g = 0,2916 g.
n(O) = 0,2916 g ÷ 16 g/mol = 0,0182 mol.
n(C) : n(H) : n(O) = 0,0364 mol : 0,1092 mol : 0,0182 mol.
n(C) : n(H) : n(O) = 2 : 6 : 1.
7 0
4 years ago
Can someone summarize the concept of Chemical bonding and counting atoms in an equation?
IRINA_888 [86]
You need to have 8 electrons to fill an atom and to fill bond the pairs need to equal 8
8 0
4 years ago
True Or False: A law is a proven fact.
antiseptic1488 [7]

Answer:

True

Explanation:

It only becomes a law when someone has proved it, or else it's just a theory.

8 0
3 years ago
Identifying Isotopes
Otrada [13]

Answer:

<em>The parent isotope in the given elements is Radium 226. </em>

Explanation:

The two elements given in the question are radioactive elements radon and Helium which are formed after an Alpha decay happens in the radium 226 to form Radon 222.

Radon has many isotopes out of which here radon 222 is formed which is a noble gas that is odourless colourless but Radioactive.  Again in this reaction helium is formed which is again a noble gas and very light in weight.

5 0
3 years ago
Read 2 more answers
Which is the strongest base?
DochEvi [55]

Answer:

The answer to your question is: [H+] = 10⁻¹²

Explanation:

Remember that pH = -log [H+], then, in this exercise we need to calculate the pH of the substances and compare the results, the one which the higher value will be the strongest base.

a) [H+] = 10^-9      pH = -log[10⁻⁹] = 8

b) [H+] = 10^-11     pH = -log[10⁻¹¹] = 10

c) [H+] = 10^-10     pH = -log[10⁻¹⁰] = 9

d) [H+] = 10^-12    pH = -log[10⁻¹²] = 11      This is the strongest base

4 0
4 years ago
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