1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
sergey [27]
3 years ago
12

Which of the following is an element? A. CO2 B. H2O C. Xy D. Na

Chemistry
1 answer:
max2010maxim [7]3 years ago
3 0
I believe the answer is D
You might be interested in
Calculate the mass percent (m/m) of a solution prepared by dissolving 51.56 g of NaCl in 164.2 g of H2O. Express your answer to
denis-greek [22]

Answer:

"23.896%" is the right answer.

Explanation:

The given values are:

Mass of NaCl,

= 51.56 g

Mass of H₂O,

= 165.6 g

As we know,

⇒  Mass of solution = Mass \ of \ (NaCl+H_2O)

                                 = 51.56+164.2

                                 = 215.76 \ g

hence,

⇒ Mass \ percent =\frac{Mass \ of \ NaCl}{Mass \ of \ solution}\times 100

                           =\frac{51.56}{215.76}\times 100

                           =23.896 \ percent

4 0
2 years ago
What is the <br> formula for gunpowder
mrs_skeptik [129]

Here is the chemical equation for gun powder, in it’s simple form:

<span>2 KNO3 + S + 3 C → K2S + N2 + 3 CO2.</span>

This is the same simplified formula, only balanced:

<span>10 KNO3 + 3 S + 8 C → 2 K2CO3 + 3 K2SO4 + 6 CO2 + 5 N2.</span>

3 0
3 years ago
Express each of the following answers in the IUPAC format. Do not include any capitals or spaces in your name. Separate multiple
lorasvet [3.4K]

The full question is shown in the image attached

Answer:

See explanation

Explanation:

In naming an alkane, the first thing we do is to obtain the parent chain by counting the number of carbon atoms in the chain.

When we obtain that, then we identify the substituents and number them in such a way that they have the lowest numbers. The compounds shown have the following names according to the order in which the structures appear in the image attached;

1. 2-methyl propane

2. 2,4-dimethyl heptane

3. 2,2,3,3-tetramethyl butane

4. 5-ethyl-2,4-dimethyl octane

5 0
3 years ago
Which lists the waves in order of frequency, from highest to lowest?
Ulleksa [173]

Answer:

C

Explanation:

I just aswered this question and i got it right

7 0
3 years ago
Read 2 more answers
E. the compound sodium sulfate is soluble in water. when this compound dissolves in water what ion would be present in solution?
dimaraw [331]
Sodium ions and sulfate ions shall be present in the solution.

5 0
3 years ago
Other questions:
  • Which phrase best describes the path of a light wave ?
    15·1 answer
  • What is the molar mass of citric acid (C6H8O7) and baking soda (NaHCO3)?
    15·1 answer
  • what does the distance traveled by each component on the paper strip in paper chromatography depend on
    7·2 answers
  • Are electrons exchanged between ionic or covalent bonds
    13·2 answers
  • A gas at 45 o C occupies 5.22 L. At what temperature will the volume be 6.87 L?
    15·1 answer
  • 4 AlF3 + 3 O2 ----------&gt; 2Al2O3 + 6 F2
    5·1 answer
  • Minerals transferred the same amont of energy into both minerals. Why did one mineral change and the other stayed the same?
    10·1 answer
  • Tính số nguyên tử oxi
    8·1 answer
  • 1.4g of calcium oxide obtained by heating limestone was found to contain 0.4g of oxygen.another sample of 3.5g of calcium oxide
    15·1 answer
  • A pure liquid has a constant boiling point, but a liquid with a constant boiling point is not necessarily pure. Explain.
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!