CHEMISTRY HIGH SCHOOL

Josie observed that when water is boiled in an open beaker it completely disappears, leaving the beaker dry. What can Josie conclude?

Answers

Answer 1
Answer: the water evaporated into water vapor.
Answer 2
Answer:

Answer:

Explanation:

that when water is boiled in a open beaker and it disappears that it evaporates into the air

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What are the 4 types of bonds carbon can form and their structures

Answers

The most common bond carbon can form is a covalent bond. Carbon shares electrons with other atoms. This includes carbon-carbon bonds and carbon-hydrogen bonds. Another type of bond carbon can make is an ionic bond but this is a less common bond. For example is Calcium Carbide.

Which of the following mixture types can be filtered to remove solute? (1 point) suspensions only colloids only suspensions and colloids suspensions and solutions

Answers

The correct answer is suspensions only. The suspension is a heterogeneous mixture that contains solid particles that are largely enough to undergo sedimentation. Usually, these particles are about one micrometer which makes these solute to be very easy to be free from their solvent and be filtered.

The answer to your question is

suspensions only

Write the formula of the following chemical compounds: i. Calcium phosphate ii. Ammonium carbonate

Answers

i - Ca3(PO4)2
ii- (NH4)2CO3

Which of these statements best describes the relationship difference between minerals and rocks

Answers

The statement that best describes the relationship difference is most rocks are made out of minerals.

Answer:

rocks are made out of minerals.

Explanation:

The monoprotic acid from among the following isa. H2CO3.
b. H2SO4.
c. H3PO4.
d. HCl.

Answers

Answer: Option (d) is the correct answer.

Explanation:

An acid which gives only one hydrogen ion or H^(+) ions upon dissociation in an aqueous solution is known as a monoprotic acid.

Whereas when an acid gives two hydrogen or H^(+) ions upon dissociation in an aqueous solution is known as a diprotoc acid.

And when an acid gives three hydrogen or H^(+) ions upon dissociation in an aqueous solution is known as a triprotoc acid.

Therefore dissociation of the given acids in an aqueous solution will be as follows.

  H_(2)CO_(3) \rightarrow 2H^(+) + CO^(2-)_(3)

  H_(2)SO_(4) \rightarrow 2H^(+) + SO^(2-)_(4)

  H_(3)PO_(4) \rightarrow 3H^(+) + PO^(2-)_(4)

  HCl \rightarrow H^(+) + Cl^(-)

Hence, we can conclude that out of the given options, HCl is the monoprotic acid.

Monoprotic acid are acids having only one hydrogen atoms after dissociation into ions from its compound. The monoprotic acid from among the following is HCl. The answer is letter D. HCl → H+ + Cl-. Note that there is only one H+ ion upon dissociation.

What is required for reactants to form bonds? a. energy output
b. energy input
c. equilibrium
d. exchange reaction

Answers

a. Energy output 
since you need to release a certain amount of energy to hit the activation point.
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