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
Helen [10]
3 years ago
5

The table lists the chemical formulas or symbols of a few common substances. Which two substances are compounds? A) aluminum and

iron B) iron and sodium chloride C) carbon dioxide and aluminum D) sodium chloride and carbon dioxide
Chemistry
2 answers:
katrin [286]3 years ago
7 0
D is the correct answer

every other option contains an element
Tatiana [17]3 years ago
7 0

The answer is D because both sodium chloride and carbon dioxide contain more than one element. This is indicated by their formulas, which contain the symbols for two elements each.

You might be interested in
Heterotrophic bacteria obtain food by
BARSIC [14]
Heterotrophic cells must ingest biomass to obtain their energy and nutrition. Heterotrophic microorganisms mostly feed upon dead plants and animals, and are known as decomposers. ... Some animals also specialize on feeding on dead organic matter, and are known as scavengers or detritivores. Hope this was helpful.
5 0
3 years ago
Determine the total time that must elapse until only ¼ of an original sample of the radioisotope Rn-222 remains unchanged.
Arte-miy333 [17]

Answer:

7.6 days

Explanation:

Radon is a radioactive element and Radon-222 is it's most stable isotope. The half-life of Radon-222 has been found to be approximately 3.8 days.

Let, the initial amount of the Rn-222 = 1 = A

Final amount = \frac{1}{4} = A'

We will use the following relation for calculating time elapsed in the decay

A' = A(\frac{1}{2} )^\frac{t}{t_1_/_2}  }

Thus,

\frac{1}{4} =1(\frac{1}{2} )^\frac{t}{3.8}

We can write is as,

(\frac{1}{2} )^2=(\frac{1}{2} )^\frac{t}{3.8}

Since the base in both sides are equal, powers can also be equal and thus,

2=\frac{t}{3.8}

So, t = 7.6 days

5 0
3 years ago
a solution of silver (i) nitrate and a solution of calcium bromate react and produce a splice precipitate of silver bromate
kykrilka [37]

Answer:

2 AgNO₃(aq) + Ca(BrO₃)₂(aq) ⇒ Ca(NO₃)₂(aq) + 2 AgBrO₃(s)

2 Ag⁺(aq) + 2 NO₃⁻(aq) + Ca²⁺(aq) + 2 BrO₃⁻(aq) ⇒ Ca²⁺(aq) + 2 NO₃⁻(aq) + 2 AgBrO₃(s)

2 Ag⁺(aq) + 2 BrO₃⁻(aq) ⇒ 2 AgBrO₃(s)

Explanation:

The question is missing but I think it must be about the chemical equations.

Let's consider the molecular equation that occurs when a solution of silver nitrate and a solution of calcium bromate react.

2 AgNO₃(aq) + Ca(BrO₃)₂(aq) ⇒ Ca(NO₃)₂(aq) + 2 AgBrO₃(s)

The complete ionic equation includes all the ions and the insoluble species.

2 Ag⁺(aq) + 2 NO₃⁻(aq) + Ca²⁺(aq) + 2 BrO₃⁻(aq) ⇒ Ca²⁺(aq) + 2 NO₃⁻(aq) + 2 AgBrO₃(s)

The net ionic equation includes only the ions that participate in the reaction and the insoluble species.

2 Ag⁺(aq) + 2 BrO₃⁻(aq) ⇒ 2 AgBrO₃(s)

7 0
3 years ago
The reaction of hydrogen with oxygen produces water.
Anika [276]
Make a ratio of the number of moles and do the calculations. Do you get it?

5 0
3 years ago
Balance Na2CrO4 + AlPO4
Sonbull [250]

Answer:

2Na3PO4 + Al2(CrO4)3

Explanation:

these are the products

3 0
2 years ago
Other questions:
  • An ionic bond is formed between a cation A1 and an anion B2. How would the energy of the ionic bond [see Equation (9.2)] be affe
    15·1 answer
  • If you burn 46.0 g of hydrogen and produce 411 g of water, how much oxygen reacted?
    15·1 answer
  • What those this best represent Dalton’s law Charles law
    14·1 answer
  • Read the following chemical equations.
    5·1 answer
  • 2)
    14·1 answer
  • Given the following unbalanced equation:
    7·1 answer
  • What is the gram formula of na2co3
    9·1 answer
  • Identify this vocabulary word: the breakdown of glucose in the absence of oxygen
    15·1 answer
  • Water can take on three forms which include ice, water, and water vapor. Which states of matter match these three forms of water
    14·2 answers
  • Consider this reaction, which occurs in the atmosphere and contributes to photochemical smog:
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!