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NeX [460]
3 years ago
12

I need help once again lol

Chemistry
1 answer:
andre [41]3 years ago
4 0
I believe it’s A, but i’m not fully sure so wait until someone else can answer.
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What are the main functions of the human skeletal system?
laiz [17]

Answer:

The answer is A.........

3 0
3 years ago
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Concentrated hydrochloric acid is 36% (Weight/Volume) hydrochloric acid and has a density of 1.18 g.cm -3.
dezoksy [38]

The concentration refers to the amount of substance that is contained in solution.

<h3>What is the concentration?</h3>

The concentration refers to the amount of substance that is contained in solution. We can be able to obtain the concentration of the raw acid by the use of the relation;

Co = 10pd/M

M = molar mass of the acid

p = percentage of the acid

d = density of the acid

Co = 10 * 36 * 1.18/36.5

Co = 11.6 M

Using the dilution formula;

C1V1 = C2V2

10 * 11.6 = C2 * 1000

C2 = 10 * 11.6/1000

C2 = 0.116 M

Using again;

C1V1 = C2V2

0.116 * 5 = C2 * 20

C2 = 0.116 * 5 /20

C2 = 0.029 M

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8 0
2 years ago
Which is the Net Ionic Equation for:
arlik [135]

Answer: 2Fe^{3+}(aq)+3Mg(s)\rightarrow 3Mg^{2+}(aq)+2Fe(s)

Explanation:

Complete ionic equation : In complete ionic equation, all the substance that are strong electrolyte and are present in an aqueous state and represented in the form of ions.

Net ionic equation : In the net ionic equations, we do not not include the spectator ions in the equations.

Spectator ions : The ions present on reactant and product side which do not participate in a reactions. The same ions present on both the sides.

 The complete balanced ionic equation will be:

2Fe^{3+}(aq)+6Cl^-(aq)+3Mg(s)\rightarrow 3Mg^{2+}(aq)+6Cl^-(aq)+2Fe(s)

 In this equation, Cl^- are the spectator ions.

By removing the spectator ions from the balanced ionic equation, we get the net ionic equation.

The net ionic equation will be:

2Fe^{3+}(aq)+3Mg(s)\rightarrow 3Mg^{2+}(aq)+2Fe(s)

3 0
3 years ago
Determine the empirical formulas for the following compounds:
Delicious77 [7]

Answer:

<em>a)C4H5N2O</em>

<em>b)C12H22O11</em>

<em>c)HO2</em>

<em>d)CH2O</em>

<em>e)C3H4O3</em>

Explan ation:

To obtain th e empirical formul a from the molecular for mula you have to divide the subscripts by the largest whole number you can, that provide you a whole number for each one subscripts:

Download docx
8 0
4 years ago
Predict which of the substances, NH3, N2, CH2Cl2, Cl2, CCl4 has
gulaghasi [49]

Answer:

djsjwjwjdjxjdbs djwuqidx8diw d xbd

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