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Valentin [98]
3 years ago
10

Refer to the periodic table of the elements to help you answer this question. if the number of protons in an electrically neutra

l atom is 92 and its mass number is 238, what is the name of that element, its number of electrons, and number of neutrons?
Chemistry
1 answer:
melomori [17]3 years ago
5 0
Uranium, it has 92 electrons as it is a neutrally charged atom, 146 neutrons
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What family on the periodic table has ad least one solid, one liquid and one gas.
const2013 [10]

Answer:

FLUORINE, CHLORINE, BROMINE, IODINE, ASTATILE AND TENNESINE

Explanation :

Florine and chorine=gas

Bromine=liquid

ASTATILE and TENNESINE =solid

HOPE IT is right

5 0
3 years ago
Why do submarines have to be built with such strong, thick walls, compared to ships? Explain in as much detail as you can using
ankoles [38]
Ships only go a couple meters under water so their hull is not required to go so far underwater. A submarine goes much lower which means there is much more pressure on the hull which requires a bigger hull.
4 0
3 years ago
You had a closed tank of air at a pressure of 4 atm and temperature of 20 degrees Celsius. When the tank and the air are heated
notka56 [123]

Answer:

The pressure will be 4.27 atm.

Explanation:

Gay-Lussac's law can be expressed mathematically as follows:

\frac{P}{T} =k

Where P = pressure, T = temperature, K = Constant

This law indicates that the quotient between pressure and temperature is constant.

This law indicates that, as long as the volume of the container containing the gas is constant, as the temperature increases, the gas molecules move faster. Then the number of collisions with the walls increases, that is, the pressure increases. That is, the pressure of the gas is directly proportional to its temperature.

In short, when there is a constant volume, as the temperature increases, the pressure of the gas increases. And when the temperature is decreased, the pressure of the gas decreases.

You want to study two different states, an initial state and a final state. You have a gas that is at a pressure P1 and a temperature T1 at the beginning of the experiment. By varying the temperature to a new value T2, then the pressure will change to P2, and the following will be fulfilled:

\frac{P1}{T1} =\frac{P2}{T2}

In this case:

  • P1= 4 atm
  • T1= 20 C= 293 K (being 0 C= 273 K)
  • P2= ?
  • T2= 40 C= 313 K

Replacing:

\frac{4 atm}{293 K} =\frac{P2}{313 K}

Solving:

P2= 313 K* \frac{4 atm}{293 K}

P2= 4.27 atm

<u><em>The pressure will be 4.27 atm.</em></u>

8 0
3 years ago
Which answer choice has 4 significant figures... A.100.090090 b.143.29 c.0.05843 D. 0.1000 E. 00.0030020
oksian1 [2.3K]

c. 0.05843 would be the correct answer.

This is because significant figures are measured by starting from the first non-zero digit, and the first non-zero digit in option c. is 5, and it ends at 3. If you count all the figures from 5 through 3, you'll find that there's 4 figures in total (5, 8, 4, 3).

8 0
3 years ago
Approximately how many elements are in the Periodic Table?
lakkis [162]
There are about 118 elements on the periodic table. <span />
7 0
3 years ago
Read 2 more answers
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