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ozzi
2 years ago
6

A solid substance turns directly into a gas. Which term describes this change?

Chemistry
2 answers:
IgorLugansk [536]2 years ago
5 0

Answer:

sublimation

Explanation:

Deposition is like dew forming

evaporation is going from liquid to gas

melting is going form solid to liquid ( like ice does when it warms)

sublimation is going from solid directly to gas ( like moth balls)

Aliun [14]2 years ago
3 0
It’s probably A or D.
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Compare and contrast the properties of acids and bases. include two similarties and two differences.
gtnhenbr [62]
Hello!

Similarities:

-They can conduct electric current because they both are ionic substances.-

-They both form Water and Salt when neutralized. 

Differences:

-Acids release Hydronium ions (H₃O⁺) when hydrolyzed while Bases release Hydroxyl ions (OH⁻) when hydrolyzed. 

-Acids are commonly formed with non-metals (such as Chlorine, Sulfur, Oxygen, and Nitrogen) while Bases are commonly formed with metals (such as Sodium, Potassium, Calcium, and Copper). 

Have a nice day!


4 0
3 years ago
How many grams of Sodium metal are required to completely react with 100 g of Magnesium chloride hexahydrate in a single replace
slava [35]

Answer:

MgCl2 - 6H2O

203.3 mol

MgCl2 + 2Na = 2NaCl + Mg

22.6g

Explanation:

1. Write the formula of hydrate and find molar mass.

2. Write a balanced single replacement (don't include H2O)

3. Do the given/wanted calculation (include H2O in molar mass of given)

6 0
3 years ago
If you were to look up at the moon and see the shape of the moon as a circle, what would the next observable shape in the cycle
svet-max [94.6K]

Answer:

Half circle

Explanation:

because in the next day between 5O'clock the sun will rise then the moon will therefore created to be in a half moon

4 0
2 years ago
How many picoliters are in 3.16 mL
marissa [1.9K]

Answer:

3.16×10⁹ pL

Explanation:

Given data:

Volume in mL = 3.16

Volume in picoliters = ?

Solution:

Picoliter and milliliters are units of volume. Milliliter is greater unit than picoliter.

1 mL = 10⁹ pL

Now we will convert the 3.16 mL into pL.

3.16 mL × 10⁹ pL/ 1 mL

3.16×10⁹ pL

4 0
4 years ago
What is the change in internal energy ( ΔU ) of the system if q = –8 kJ and w = –1 kJ for a certain process?
Radda [10]

Answer:

Change in internal energy (ΔU) = -9 KJ

Explanation:

Given:

q = –8 kJ [Heat removed]

w = –1 kJ [Work done]

Find:

Change in internal energy (ΔU)

Computation:

Change in internal energy (ΔU) = q + w

Change in internal energy (ΔU) = -8 KJ + (-1 KJ)

Change in internal energy (ΔU) = -8 KJ - 1 KJ

Change in internal energy (ΔU) = -9 KJ

6 0
3 years ago
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