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Arada [10]
3 years ago
12

160 g or an element with a molar mass of 40 = __ moles?

Chemistry
1 answer:
IRISSAK [1]3 years ago
4 0

Answer:

4 moles

Explanation:

The formula of finding moles is

moles = mass / molar mass, therefore

moles = 160 g / 40 g/mol = 4 moles

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What happens if you don't disconnect the wires in a series circuit?
Mars2501 [29]

Answer:

the series circuit has <u>one current</u> so if you don't disconnect the wires nothing happens

but if you disconnect the wires in series circuit, the current stop and the current doesn't go to the end

Explanation:

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5 0
3 years ago
A 3L sample of an ideal gas at 178 K has a pressure of 0.3 atm. Assuming that the volume is constant, what is the approximate pr
harina [27]

Answer: The approximate pressure of the gas after it is heated to 278 K is 0.468 atm.

Explanation:

Given: T_{1} = 178 K,      P_{1} = 0.3 atm

T_{2} = 278 K,           P_{2} = ?

According to Gay Lussac law, at constant volume the pressure of a gas is directly proportional to the temperature.

Formula used to calculate the pressure is as follows.

\frac{P_{1}}{T_{1}} = \frac{P_{2}}{T_{2}}\\

Substitute the values into above formula is as follows.

\frac{P_{1}}{T_{1}} = \frac{P_{2}}{T_{2}}\\\frac{0.3 atm}{178 K} = \frac{P_{2}}{278 K}\\P_{2} = 0.468 atm

Thus, we can conclude that the approximate pressure of the gas after it is heated to 278 K is 0.468 atm.

3 0
3 years ago
Which of the newman structures below represents this conformation of 2-methyl-3-pentanol, as viewed along the c2-c3 bond?
castortr0y [4]

Answer:

(4) option is correct

Explanation:

Given that,

The conformation of 2-methyl-3-pentanol, as viewed along the C₂-C₃ bond.

We need to find the Newman structures

Using given structures

The structure of 2- methyl-3- pentanol is shown in figure.

Through C₂-C₃ carbon shown the structure of Newman projection in figure.

Here, carbon 2 is in front side and carbon 3 is in back side in the figure.

Hence, (4) option is correct.

5 0
3 years ago
You discover a new substance that mixes well with H2O initially, but eventually the particles sink to the bottom. What is the BE
AVprozaik [17]
I believe this would be colloid
7 0
3 years ago
What is NOT a property of a metal?
Phantasy [73]

Answer:

Lustrous is NOT a property of metal

6 0
3 years ago
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