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Tanzania [10]
3 years ago
12

The combination of the atoms of two or more elements is known as a/an

Chemistry
2 answers:
Snowcat [4.5K]3 years ago
7 0
<span>The answer is\ compound, B. A compound is a particle made of molecules from various components. All mixes are particles, however not all atoms are mixes. Hydrogen gas (H2) is an atom, however not a compound since it is made of just a single component.</span>
zhenek [66]3 years ago
3 0
<span>The correct option is option D i.e. Compound. A compound is made up of two of more elements which are bonded chemically. For example,Water is a compund. It is made of two elements oxygen and hydrogen. One oxygen atom and two hydrogen atoms combine to form water i.e. H2O. </span>
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Determine which reaction has the highest activation energy.
Ymorist [56]

Answer:

A.

Explanation:

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2 years ago
Question 2 Unsaved Which of the following chemical formulas shows a covalent compound? a)CO2 b)MgO c)NaCl d)HBr
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It would be D
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Diffrence btwn a period and a group
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8 0
3 years ago
Imagine you had HCl with a concentration of exactly 0.10 mol/dm3. If 0.023 dm3 of a sodium hydroxide solution, NaOH (aq), could
polet [3.4K]

Answer:

Explanation:

Step 1: Calculate the amount of sodium hydroxide in moles

Volume of sodium hydroxide solution = 25.0 ÷ 1,000 = 0.0250 dm3

Rearrange:

Concentration in mol/dm3 =

Amount of solutein mol = concentration in mol/dm3 × volume in dm3

Amount of sodium hydroxide = 0.100 × 0.0250

= 0.00250 mol

Step 2: Find the amount of hydrochloric acid in moles

The balanced equation is: NaOH(aq) + HCl(aq) → NaCl(aq) + H2O(l)

So the mole ratio NaOH:HCl is 1:1

Therefore 0.00250 mol of NaOH reacts with 0.00250 mol of HCl

Step 3: Calculate the concentration of hydrochloric acid in mol/dm3

Volume of hydrochloric acid = 20.00 ÷ 1000 = 0.0200 dm3

Concentration in mol/dm3 =

Concentration in mol/dm3 =

= 0.125 mol/dm3

Step 4: Calculate the concentration of hydrochloric acid in g/dm3

Relative formula mass of HCl = 1 + 35.5 = 36.5

Mass = relative formula mass × amount

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= 4.56 g

So concentration = 4.56 g/dm3

8 0
3 years ago
Here is my question..
OverLord2011 [107]
I would say 3.0 cause yeah yeah yeah yeah I’m iann Dior
7 0
3 years ago
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