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LenaWriter [7]
3 years ago
11

Materials Science is the study of solid stuff.A TrueB) False​

Chemistry
2 answers:
miv72 [106K]3 years ago
7 0

Answer:

true

Explanation:

Materials science is an interdisciplinary field involving the properties of matter and its applications to various areas of science and engineering. It includes elements of applied physics and chemistry, as well as chemical, mechanical, civil and electrical engineering.

and we all know matter involve solid liquid or gas

mario62 [17]3 years ago
6 0

Answer:

the answer is True

Explanation:

True

<em>Hope</em><em> </em><em>this</em><em> helps</em>

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Why is that Helium is shown here with the Group II alkali earth metals
Galina-37 [17]

Answer: helium is not a metal nor a non metal it's a noble gas

Explanation:

8 0
4 years ago
How many molecules are in 25g of Na2SO4?
bearhunter [10]
Hey there!

Molar mass Na2SO4 = 142.04 g/mol

Number of moles:

n = m / mm

n = 25 / 142.04

n = 0.176 moles of Na2SO4

Therefore, use the Avogadro constant

1 mole Na2SO4 ------------------- 6.02x10²³ molecules
0.176 moles Na2SO4 ------------   molecules ??


0.176  x  ( 6.02x10²³ ) / 1 

=> 1.059x10²³ molecules of Na2SO4

hope this helps!


3 0
3 years ago
Read 2 more answers
A student made the Lewis dot diagram of a compound as shown. Mg is written with two dots shown on its top. Cl is written on the
blsea [12.9K]

Answer:

The dots were not properly located and arrows are not used in Lewis structures

Explanation:

If we intend to write a Lewis structure for a compound, that lewis structure must consist of only dots. These dots actually show the valence electrons on the outermost shell of the molecule.

We do not involve arrows when writing dot electron structures for compounds. The valence electrons of magnesium ought not to be written together because they are not a lone pair, rather they are two unpaired electrons. The use of an arrow suggests a coordinate covalent bond which is not the case here.

The correct lewis structure for MgCl2 is shown in the image attached to this answer.

7 0
3 years ago
2H2 + O2 → 2H2O
Rudiy27

Answer: 88g

Explanation:

11 moles H2  = 11 mole H2O = 5.5 moles O2 = 16*5.5 g

6 0
3 years ago
The Sun provides energy to the Earth through which of the following processes?
strojnjashka [21]
The sun provides energy through nuclear fusion by fusing the atoms of hydrogen and helium in the suns core, so the answer is D
4 0
3 years ago
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