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Paha777 [63]
3 years ago
8

Which statement describes what happens in a chemical reaction?

Chemistry
2 answers:
NNADVOKAT [17]3 years ago
6 0

Answer: pic

Explanation:

plz

sp2606 [1]3 years ago
3 0

Answer:

4. matter is neither created nor destroyed

Explanation:

The Law of Conservation of Mass dates from Antoine Lavoisier's 1789 discovery that mass is neither created nor destroyed in chemical reactions. In other words, the mass of any one element at the beginning of a reaction will equal the mass of that element at the end of the reaction.

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Sucralfate (molecular weight: 2087g/mol) is a major component of Carafate® which is prescribed for the treatment of gastrointest
maxonik [38]

Answer:

The molarity of the solution is 0.048 M (option B)

Explanation:

<u>Step 1: </u>Data given

Sucralfate has a molar mass of 2087 g/mole

mass = 1g

volume = 10 mL

<u>Step 2: </u> Calculate moles of sucralfate

Number of moles = mass of sucralfate / Molar mass of sucralfate

Number of moles = 1 g / 2087 g/mole = 4.79 * 10^-4 moles

<u>Step 3:</u> Calculate molarity

Molarity = Number of moles / volume

Molarity = (4.79 * 10^-4 moles) / (10 *10^-3 L)

Molarity = 0.0479 M  ≈ 0.048 M

The molarity of the solution is 0.048 M (option B)

7 0
3 years ago
6. A group of students is performing a simple scientific investigation with baking soda and vinegar. The students place vinegar
natali 33 [55]

Answer:

A. The vinegar and baking soda released a gas. Hope it helps. :)

5 0
3 years ago
1. Alexa and her family travelled 5 hours south east on 1-45 to crystal
Gre4nikov [31]

Answer:

Average speed  = 68 mph

Explanation:

Given that,

Total distance traveled by the family, d = 340 miles

The family traveled 5 hours southeast.

We need to find her average speed. The speed of an object is given by the total distance covered divided by time taken. So,

v=\dfrac{d}{t}

Put all the values,

v=\dfrac{340}{5}\\\\v=68\ mph

So, her average speed is equal to 68 mph.

5 0
3 years ago
Valence Bond theory predicts that tin will use what hybrid orbitals in Snf5 -1​
LUCKY_DIMON [66]

Answer:

sp3d

Explanation:

The ground state electronic configuration of tin is written as; [Kr] 5s²4d¹⁰5p². Hybridization is a concept used to explain the combination of orbitals of appropriate energy to produce suitable orbitals that could be used for bonding.

In forming the compound Snf5^ -1, we have to hybridize the following orbitals on tin; 5p, 5d and 6s orbitals. This gives us a set of sp3d hybrid  hence the answer.

6 0
2 years ago
Use the image above to answer the question: Roger collected four rock samples and wrote a description of how each was formed. Wh
IrinaVladis [17]

Answer:

B

Explanation:

Cause metamorphic rock is formed by heat pressure overtime

4 0
3 years ago
Read 2 more answers
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