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vlada-n [284]
3 years ago
10

I NEED ANSWER ASAP Which of the following statements is true for a scientific theory? It is a well-tested hypothesis. It is veri

fied by only one scientist. It is based on only one experiment. It is investigated over a short period.
Chemistry
2 answers:
Digiron [165]3 years ago
7 0

Answer:

A.) It is a well-tested hypothesis.

Vlada [557]3 years ago
4 0

Answer:

Its is a well-tested hypothesis

Explanation:

i took the test

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A sample of water at 20 degrees c contains what bonds
vladimir2022 [97]
Covalent and hydrogen bonds

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What is the pH of a solution that has a hydronium ion concentration 100 times less than a solution with a pH of 6 explain your r
aksik [14]

Answer:

4

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4 0
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When excess dilute hydrochloric acid was added to sodium sulphite 960 of sulphuric (iv) oxide was produced. calculate the mass o
irakobra [83]

The mass of sodium sulfite that was used will be 1,890 grams.

<h3>Stoichiometric problems</h3>

First, the equation of the reaction:

NaSO_3 + 2HCl --- > NaCl_2 + H_2O + SO_2

The mole ratio of SO2 produced and sodium sulfite that reacted is 1:1.

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Equivalent mole of sodium sulfite that reacted = 15 moles

Mass of 15 moles sodium sulfite = 15 x 126 = 1,890 grams

More on stoichiometric problems can be found here: brainly.com/question/14465605

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3 0
1 year ago
What do you notice about the elements on the reactant and product side of the equation
Levart [38]
There is the same overall number of atoms of each element on the reactants side as on the products side, they are simply rearranged. Also, mass is conserved as atoms cannot be created or destroyed by a chemical reaction.  
4 0
3 years ago
Read 2 more answers
Which statement is correct?
rosijanka [135]

Answer:

B. Chemical changes produce new substances; physical changes do not.

Explanation:

Physical changes only alter appearances, while chemical changes are interactions that create new chemical formulas.

4 0
3 years ago
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