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4 years ago

Which family on the periodic table has a filled outer energy level?

1 answer:

6 0

The family on the periodic table that has a filled outer energy level is VIIIA. The answer is letter D. They are also called the noble gases or inert gases. They are virtually unreactive towards other elements or compounds. They are found in trace amounts in the atmosphere. Their elemental form at room temperature is colorless, odorless and monatomic gases. They also have full octet of eight valence electrons in their highest orbitals so they have a very little tendency to gain or lose electrons to form ions or share electrons with other elements in covalent bonds.

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In boyle's law, the initial volume of a gas is 120 ml at 256 kpa. what will be the volume if the pressure increases to 385 kpa?

Vinil7 [7]

<h3>Answer:</h3>

79.8 ml

<h3>Explanation:</h3>

Boyle's law describes the relationship between pressure and volume when the temperature is constant. For this question, I will be rounding to significant figures.

Boyle's Formula

When describing the relationship between pressure and volume, the formula $\displaystyle P_{1} V_{1}= P_{2} V_{2}$ . In this formula, $P_{1}V_{1}$ is the initial pressure and volume. On the other side, $P_{2} V_{2}$ is final pressure and volume. So, to find a missing variable you must plug in the values you are given.

Final Volume

Remember when solving this question to remain constant in your units. When we plug in the values we know we are given:

$256kPa*120mL=385kPa*V_{2} mL$

Now, we can multiply the left side

$30720kPa*mL=385kPa*V_{2} mL$

Finally, we can divide by 385 to isolate the final volume

$79.8mL=V_{2}$

This gives the final volume of 79.8mL.

7 0

2 years ago

What term describes the smallest unit that can perform all of the functions necessary for life

Jobisdone [24]

Answer:

Cell

A cell is the smallest unit of a living thing. Cells are the basic building blocks of all organisms

5 0

3 years ago

Compound which is prepared from gypsum, has the property of hardening when

dolphi86 [110]

Explanation:

mix right quantity of water

7 0

3 years ago

Calculate the mass, in grams, of a single tungsten atom (mw

maks197457 [2]

the atomic mass of tungsten is 183.84 grams this is the mass of one mole of tungsten we know that one mole of any substance contains Avagadro number of atoms or molecules or ions. So one mole of tungsten metal will have 6.023 X 10^23 atoms thus mass of 6.023 X 10^23 atoms is 183.84 grams hence mass of single atom = 183.84/ 6.023 X 10^23 atoms = 30.52 X10^-23 = 3.052 X 10^-22 g

5 0

4 years ago

20 points brainlist thanks How does size influence the appearance of a star? Give an example in your response

Roman55 [17]

Answer is:

when the size of a star increases, luminosity of star also increases.
This also impacts the color of a star because that is decided by the surface temperature of the star and the temperature of a star which depends on the size of star.

Examples include:

Brightness
Color
Size

Hope this helped!

4 0

4 years ago

Read 2 more answers