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2 years ago

What do you think is responsible for the color produced in the flame, the metal atom or what is attached to the metal atom?

Chemistry

1 answer:

zlopas [31]2 years ago

7 0

Answer:

metal Atom

Explanation:

every transition metal atom are responsible for the flame color. Some metal are also confirmed by flame test.

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Each molecule of testosterone contains 19 atoms of carbon (plus other atoms). The mass percent of carbon in testosterone is 79.1

Xelga [282]

Answer:

The answer to your question is letter E. 288.4 g/mol

Explanation:

Data

Number of carbons = 19

mass percent of carbon = 79.12

molar mass = ?

Process

1.- Calculate the molar mass of 19 atoms of carbon

Atomic mass of carbon = 12 g

Atomic mass of 19 atoms of carbon = 228 g

2.- Use proportions to calculate the mass of testosterone

228 g --------------- 79.12 %

x -------------- 100 %

x = (228 x 100) / 79.12

Simplify

x = 22800 / 79.12

Molar mass of testosterone = 288.2 g

6 0

3 years ago

What do you know about Relative Dating

gizmo_the_mogwai [7]

<span>it tells you the sequence in which events occurred, not how long ago they occurred.</span>

8 0

3 years ago

What would cause the pressure of a gas to increase?

IrinaK [193]

Answer: The pressure of a gas will increase when there is a decrease in the volume of the gas.

Explanation: according to Boyle's law, the volume of a gas will decrease when the pressure is increased at constant temperature and vice versa.

8 0

2 years ago

If 11g of a gas occupies 5.6dm'3at s.t.p., calculate it's vapour density (1.0mol of a gas occupies 22.4dm'3at s.t.p.).

11111nata11111 [884]

Answer:

${ \boxed{ \bf{vapour \: density = 2 \times molecular \: mass}}} \\{ \tt{ PV= (\frac{m}{ m_{r}}) RT}} \\ { \tt{3 \times 5.6 = \frac{11}{m _{r}} \times 0.0831 \times 273}} \\ { \tt{m _{r} = 14.85 \: g}} \\ \\ { \bf{vapour \: density = 2 \times m _{r}}} \\ = 2 \times 14.85 \\ = 29.7 \: { \tt{g {dm}^{ - 3} }}$

7 0

2 years ago

3.Which of these is NOT part of the cell theory? * "

Ymorist [56]

Answer:

Cells are the smallest living unit of an organism

8 0

2 years ago

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