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faltersainse [42]
3 years ago
10

Mara and ivy are asked to identify two minerals in science class. To do this, they decided to study the physical properties of t

he minerals in the following ways.
1 examine how they freeze
2 determine how they break
3 rub them on a white tile plate . What is the best method for the girls to study the physical properties and
Chemistry
2 answers:
scZoUnD [109]3 years ago
8 0

Answer:

2 only is a pretty accurate answer the others dont make sense  to me.

Explanation:

djverab [1.8K]3 years ago
8 0

Answer: determine how they break

Explanation: :)

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Which ecosystem is more likely to become unstable one with many kinds of plants and animals or one with few kinds?
Art [367]

Answer:

One with a few kinds is more likely to become unstable.

Explanation:

A lack of biodiversity means there is a lower chance of them having traits that enable them to adapt to a changing environment. A lack of biodiversity is usually caused by humans. It could be the result of habitat loss, invasive species, overexploitation, pollution, or climate change.

5 0
2 years ago
Which is the best example of a new substance forming?
Hunter-Best [27]

Answer:

lighting a match is the answer.

8 0
3 years ago
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Students conduct an experiment:
sweet-ann [11.9K]

Answer:

The balloon becomes inflated

Explanation:

The equation of the reaction between baking soda (sodium bicarbonate) and vinegar(ethanoic acid) is shown below;

NaHCO3 + HC2CH3O2 ------> NaC2H3O2 + H2O + CO2

The gas (CO2) evolved in the process leads to the inflation of the balloon dropped on the bottle in which the reaction is taking pace.

This observation provides evidence that a gas was really evolved in the reaction.

7 0
3 years ago
If a compound has a molar mass of 180 g/mol and its empirical formula is CH2O, what is its molecular formula? CH2O C2H4O2 C6H12O
irinina [24]

Its molecular formula : C₆H₁₂O₆

<h3>Further explanation  </h3>

The empirical formula(EF) is the smallest comparison of atoms of compound forming elements.  

A molecular formula(MF) is a formula that shows the number of atomic elements that make up a compound.  

(EF) n = MF

its empirical formula is CH₂O

CH₂O : 12+2+16=30

\tt [30]n=180\rightarrow n=6\\\\(CH_2O]_6=C_6H_{12}O_6

3 0
3 years ago
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Solutions with a higher concentration of solutes than the concentration inside the cell are: Solutions with a higher concentrati
Nadusha1986 [10]

Answer:

A

Explanation:

A hypertonic solution is one in which the concentration of the solute is greater than that of those inside the cell. This means that there is a solution with a higher concentration of solute compared to what is obtainable inside the cell environment.

Hence, we say that the solutions are hypertonic since they contain essentially solutes that are more concentrated than those inside the cell

7 0
3 years ago
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