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shtirl [24]
3 years ago
11

Which choice best describes a testable hypothesis?

Chemistry
1 answer:
valentinak56 [21]3 years ago
4 0

Answer:

A. carrots look better when given more water

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When dissolved in water, a neutral molecule of calcium chloride dissociates into three ions - one calcium ion and two chloride i
Mashcka [7]

Explanation:

Calcium chloride is an ionic compound as it is formed by transfer of an electron to each chlorine atom.

So, being an ionic compound calcium chloride is able to dissociate completely into water.

Hence, the dissociation reaction will be as follows.

         CaCl_{2}(s) \rightarrow Ca^{2+}(aq) + 2Cl^{-}(aq)

Since, two electrons has been lost by single calcium atom. Therefore, calcium atom will have a charge of +2.

Thus, we can conclude that the charge on the calcium ion, in elementary units is +2.

8 0
3 years ago
Plz Help! <br><br> What are antibodies and what role do vaccines play in producing them?
ladessa [460]

Answer:

Antibodies are types of proteins in the body that can prevent diseases. Once a vaccine is introduced into the bloodstream, it immediately causes the production of antibodies to occur by using T-cells and B lymphocytes, or at least, most vaccines work like that.

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3 years ago
I will give brainliest!!! In the reaction represented by the equation Al2O3 -&gt; Al + O2, what is the mole ratio of aluminum to
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Answer:;

4:3

Explanation:

Balanced:

4Al + 302 yields 2al2O3

7 0
3 years ago
Each element consists of only one type of atom.<br> A.) True<br> B.) False
natima [27]
False there are different configurations of atoms called isotopes
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Drag the types of electromagnetic waves to place them in order of increasing frequency.
DanielleElmas [232]

Answer: UV Light is the highest!

Explanation:

Ultraviolet Light has the highest frequency between the three, Visible Light would stay in the middle since its in the middle of the spectrum, thus making Infrared the lowest.

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