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ValentinkaMS [17]
3 years ago
15

Part A

Chemistry
1 answer:
lisabon 2012 [21]3 years ago
4 0

Answer:

double layered vacuum seal as the thermal insulators to make a liuqid hot when it cold and keep it cold when its hot.

Explanation:

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3. Hydrochloric acid is used to clean metals.
ss7ja [257]
The answer to your question is option b, a base. This is because the question clearly tells you that one reactant is an acid. Then, it tells you that an acid plus something gives you a salt and water, as products

From background knowledge, we know that a base plus acid gives you a salt and water. The hydroxide ions from the base neutralise the hydrogen ions from the acid, which gives you water ( as it has a pH of 7).

Therefore, your answer is b, a base
4 0
4 years ago
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Aluminum has a density of 2.70 g/m. Calculate the mass (in grams) of a piece of aluminum having a volume of 382 mL
Natalka [10]

The aluminum has a mass of 1031.4 grams.

8 0
3 years ago
Molecules can be composed of ____. Select all that apply. … two of more of the same atoms two or more smaller molecules two or m
sertanlavr [38]

Answer:

Explanation:

A group of two or more smaller molecules is the correct answer

3 0
3 years ago
What factors does the climate include?
rosijanka [135]

Answer:

A. amount of precipitation, average temperature

Explanation:

Precipitation and average temperature are factors that climate includes. These factors are determined by other factors such as location of an area(like how far a place is from large bodies of water like the sea), ocean currents, lattitude (distance from the equator), winds (prevailing winds) , topography (such as mountains) and the like.

7 0
4 years ago
Which statements describe an element? Check all that apply.
Molodets [167]

Answer:

<em>Hello, Your answer will be B,C,E, And F.</em>

Explanation:

An element is a substance whose atoms have same number of protons which means all atoms in an element have same atomic number. Elements are simplest substances which cannot be broken down by physical changes or chemical reactions. Elements are classified by their names and symbols. Hope That Helps!

8 0
4 years ago
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