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3 years ago

Examine the statement.

Chemistry

2 answers:

mr Goodwill [35]3 years ago

7 0

Answer:

Yes. water has a Constant Density.

Explanation:

The mass and the size of the molecules in the liquid and how closed together they are placed, will determine the density of the liquid. The density of a substance is the same regardless of the size of the sample.

vlada-n [284]3 years ago

5 0

Answer:disagree. Temperature increases, water expands.

Explanation:

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Balancing chemical equations

mojhsa [17]

2H2 + O2 → 2H2O

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3 years ago

Maize, man, Goat, is an example of a food chain true or false

Lina20 [59]

Answer:

False

Explanation:

The correnct chain is labeled Maize, Goat, Man.

8 0

3 years ago

Would be glad if you helped me!

Sindrei [870]

A) Fe⁰ ----> Fe⁺³ +3e⁻ oxidation | *2
b) Cu⁺² + 2e⁻ -----> Cu⁰ reduction |*3

c) 2Fe⁰ +3Cu⁺² -----> 2Fe⁺³ + 2Cu⁰

6 0

3 years ago

Consider the balanced equation for the following reaction:

Bad White [126]

Answer: The theoretical yield of the lithium chlorate is 1054.67 grams

Explanation:

To calculate the mass for given number of moles, we use the equation:

$\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}}$

Actual moles of lithium chlorate = 9.45 moles

Molar mass of lithium chlorate = 90.4 g/mol

Putting values in above equation, we get:

$9.45mol=\frac{\text{Actual yield of lithium chlorate}}{90.4g/mol}\\\\\text{Actual yield of lithium chlorate}=(9.45mol\times 90.4g/mol)=854.28g$

To calculate the theoretical yield of lithium chlorate, we use the equation:

$\%\text{ yield}=\frac{\text{Actual yield}}{\text{Theoretical yield}}\times 100$

Actual yield of lithium chlorate = 854.28 g

Percentage yield of lithium chlorate = 81.0 %

Putting values in above equation, we get:

$81=\frac{854.28g}{\text{Theoretical yield of lithium chlorate}}\times 100\\\\\text{Theoretical yield of lithium chlorate}=\frac{854.28\times 100}{81}=1054.67g$

Hence, the theoretical yield of the lithium chlorate is 1054.67 grams

7 0

3 years ago

The greeks were the first to use the term _____?

Paraphin [41]

The greeks were first to use the term atom by the scientist Democritus which he defined as an indivisible and the simplest part of a substance. Neutron was discoverred by the scientist Chadwick, proton was discovered by Sir Ernest Rutherford.For this problem, answer is A.

5 0

3 years ago