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timofeeve [1]
3 years ago
5

3. Matter with a composition that is always the same is a(n) substance mixture compound

Chemistry
1 answer:
Andre45 [30]3 years ago
7 0

Answer:

substance

Explanation:

A pure substance is a form of matter that has a constant composition (meaning it's the same everywhere) and properties that are constant throughout the sample (meaning there is only one set of properties such as melting point, color, boiling point, etc

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What is a difference between ferns and gymnosperms?
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Answer:

The answer is below!!

Explanation:

Ferns are plants that do not bear flowers. They do not have any seeds as well. In this regard, their mode of reproduction is through spores. Gymnosperms on the other hand have seeds, although they are not put inside an ovary.

Hope I Helped!!

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7 0
3 years ago
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How many ml of a 0.50m solution of hno3 solution are needed to make 500 ml of 0.15m hno3
Anna71 [15]

Answer:

150.0 mL.

Explanation:

  • It is known that the no. of millimoles of HNO₃ before dilution = the no. of millimoles of HNO₃ after dilution.

∵ (MV) before dilution = (MV) after dilution.

<em>∴ V before dilution = (MV) after dilution / M before dilution</em> = (0.15 M)(500.0 mL)/(0.50 M) = <em>150.0 mL.</em>

7 0
3 years ago
The Earth’s atmosphere is divided into five layers. In which layer does all life exist?
n200080 [17]

Answer:

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2. less dense/decreases

3. ozone

4. nitrogen

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6. flagellum

7. kingdom fungi

8. Ocean convection currents

9. As they fly, insects spread pollen that sticks to their bodies from the flowers.

10. the plastic handle, because it is a good insulator.

11. The hyphae, or feeding structures, reach deep into the wood to obtain nutrients

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5 0
3 years ago
What does the law of conservation of mass state?
katrin [286]

Answer:

matter cannot be created nor destroyed

Explanation:

8 0
3 years ago
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Predicting the products CuCl2 (aq) + Al (s)
Flauer [41]

The reaction will produce solid copper and aluminium chloride salt.

Explanation:

Copper chloride (CuCl₂) in solution will react with aluminium to form solid cooper and aluminium chloride (AlCl₃).

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Learn more about:

numerical problems with copper chloride and aluminium

brainly.com/question/8827783

#learnwithBrainly

6 0
3 years ago
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