All categories

3 years ago

Question 1 (1 point)

Chemistry

1 answer:

Aneli [31]3 years ago

6 0

Answer:

Question 1. Solubility

Question 2. 18%

Question 3. 60%

Explanation:

Question 1.

Molarity and mass percent are both, sort of concentrations for solutions.

They involve the amount of solute respect to the solution.

Solubility is the ability of a substance to dissolve in another. This capacity can be expressed in moles per liter.

Question 2.

Percent concentration which is also the same as mass percent, shows the mass of solute in 100 g of solution.

In this case, for 18 g of salt which are contained in 100 g of solution, the percent concentration is 18%

Question 3.

Solute: 45 g of sugar

Solvent: 30 g of water

Solution: 75 g of solution

Percent sugar in the solution → (45 g / 75g) . 100 = 60%

You might be interested in

The atomic number of magnesium (mg) is 12. this is also the number of which of the following

Rzqust [24]

The answer is protons.

8 0

2 years ago

Question 8 (9 points) <br><br>Match the lab equipment with its purpose

Deffense [45]

Answer:

$\sf \boxed{4} \mapsto Pipet$

$\sf\boxed{7}\mapsto Test \:tube \: rack$

$\sf\boxed{3}\mapsto Test\: table$

$\sf\boxed{5}\mapsto Scoopula$

$\sf\boxed{1}\mapsto Graduated\: cylinder$

$\sf\boxed{9}\mapsto Bunsen \:burner$

$\sf\boxed{2}\mapsto Beaker$

$\sf \boxed{8}\mapsto Spot\: plate$

$\sf\boxed{6}\mapsto Goggles$

Explanation:

Pipet is used to dispense a very small amount of liquid.

Test tube rack is used to hold multiple test tubes at the same time.

Test Table is used to view chemical reactions or hold or heat small amounts of substance.

Scoopula is used to dispense chemicals from a larger container.

Graduated cylinder is used to measure volume very precisely.

Bunsen burner is used to heat objects.

Beaker is used to transport heat or store substance.

Spot plate is used to observe the color changes of small quantities of a reacting mixture.

Goggles are used to protect the eyes from flying objects or chemical splashes.

_____________________________________________________

7 0

3 years ago

For each of the following compounds, write the symbols of the ions in the compound, and the number of each ion in the molecule o

Kay [80]

Ca^2+ and I^-
Na+ and Co3^2-
Ga^3+ and ClO3
Cu^2+ and F-
NH4^- and PO4^3-
Fe2+ and (SO4)^2-
Mg2+ and NO3^-
NH4^+ and NO2^-
K^+ and (C2H3O2)^- {C2H3O2 is acetate}
Na^+ and Cr2O7^2-

8 0

3 years ago

What type of bond is Na3PO4?; Is Na3PO4 ionic or molecular?; Does Na3PO4 have ionic and covalent bonds?; Is Na3PO4 a polyatomic

Leni [432]

The type of the bond is present Na₃PO₄ is the ionic bond. the Na₃PO₄ is the ionic compound. yes the Na₃PO₄ is the polyatomic ion.

The Na₃PO₄ is Na⁺ and PO₄³⁻. the phosphorus is the non metal and the oxygen atom is the non metal. the non meta and non meta form the covalent or molecular bond. the bond between the PO₄³⁻ bond is the covalent bond but the overall present in the Na₃PO₄ is the ionic bond . the bons in between the Na⁺ and PO₄³⁻ is the the ionic bond. the PO₄³⁻ id the polyatomic ion .

The bond between the positively charged ion and the negatively charged ion are called as the ionic bond and the compound form is the ionic compound.

To learn more about ionic bond here

brainly.com/question/29005103

#SPJ4

6 0

1 year ago

The factor that is changed throughout an experiment is called the _______. A. apparatus B. constant C. variable D. hypothesis

ser-zykov [4K]

The variable is what changes during an experiment. Hopefully this helped! :)

4 0

3 years ago

Read 2 more answers