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natta225 [31]
3 years ago
12

Which is a TRUE statement about salt water?

Chemistry
2 answers:
makkiz [27]3 years ago
6 0
I think the best answer from the given choices is option D. <span>Salt water is made up of more than one pure substance. It consists of salt and water. When each component exist alone in a container they are considered as pure substance however when mixed they are now a solution.</span>
Phantasy [73]3 years ago
3 0

Answer:

the answer is D

Explanation:

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Which central atom hybridization would you expect in the series bh−4, ch4, nh+4?
hoa [83]

Expected:

sp³ in all three molecules.

<h3>Explanation</h3>

The hybridization of the central atom is related to the number of electron domains around that atom.

\begin{array}{c|c|c}\textbf{Number of Electron Domains} & \textbf{Hybridization}&\textbf{Example}\\ 2 & \text{sp} & \text{C as in CO}_2\\ 3 & \text{sp}^{2} & \text{C in H}_2\text{C}=\text{CH}_2\\ 4 &\text{sp}^{3} & \text{C as in CH}_4\end{array}.

What is an electron domain?

  • An atom bonded to the central atom counts as one electron domain. That atom counts as one electron domain regardless of the bond order. One single bond counts as one electron domain. One double bond counts as one electron domain. One triple bond counts as one electron domain.
  • A lone pair of electrons count as one electron domain.

How many electron domains in BH₄⁻, CH₄, and NH₄⁺?

  • BH₄⁻: Four H atoms are bonded to the central B atom. That ensures an octet for the central B atom. No lone pairs are needed. Four electron domains from the four bonded atoms. sp³ hybridization.
  • CH₄: Four electrons domains with four H atoms and no lone pair. sp³ hybridization.
  • NH₄⁺: Four electrons with four H atoms and no lone pair. sp³ hybridization.
6 0
3 years ago
Which of the following is one of the energy conversions taking place in a campfire? Heat to light Heat to kinetic Chemical to li
Blizzard [7]

Answer:Heat to Light

Explanation:

8 0
3 years ago
Read 2 more answers
Which of the following organelles directs of the other parts of the cell?
Natalija [7]

Answer:A

Explanation: because The nucleus directs all of the cell's activities, including reproduction.

6 0
3 years ago
Read 2 more answers
If the percent (mass/mass) for a solute is 8% and the mass of the solution is 200 g, what is the mass of solute in solution?
tatyana61 [14]

Answer:

The answer to your question is  16 g

Explanation:

Data

Percent by mass = 8%

Mass of the solution = 200 g

Mass of solute = ?

Formula

Percent by mass = mass of solute / mass of solution x 100

- Solve for mass of solute

  Mass of solute = Percent by mass x mass of solution / 100

- Substitution

   Mass of solute = 8 x 200 / 100

- Simplification

    Mass of solute = 1600 / 100

- Result

    Mass of solute = 16 g

3 0
3 years ago
Read 2 more answers
How many moles of the product fecl3 do you make, when 8moles of fe react with excess cl2
tatuchka [14]

To figure out questions related to reacting moles/masses, the first step is always to write a complete balanced equation.

2Fe (s) + 3Cl2 (g) → 2FeCl3 (s)

Since Cl2 is the excess reactant, and Fe is the limiting reactant, we can simply find the number of moles of the product by comparing the mole ratio of the limiting reactant to the mole ratio of the product from the equation.

From the equation, mole ratio of Fe:FeCl3 = 2:2 = 1:1, the number of moles of product is exactly the same as the number of moles of the limiting reactant, which makes it 8 moles.

Note that if the mole ratio is not 1:1, you have to do some calculations to make sure the no. of moles is balanced at the end. Which means, if the mole ratio happened to be 1:2, the no. of moles of the product would be 8x2=16 instead.

So, your answer is 8 moles.

7 0
3 years ago
Read 2 more answers
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