Which statement describes an intensive property of matter?A. It is the same for every sample of a single substance.
B. It depends on how a substance was formed.
C. It is the same for every sample of every substance.
D. It depends on the amount of substance present.

Answers

Answer 1

Answer: Among the choices above, I think the statement that best describes an intensive property of matter is letter B which is " It depends on how a substance was formed." Intensive properties are those property which does not depend upon the amount of substance present in the system. Such as refractive-index, density etc

Answer 2

Answer:

An intensive property of matter is independent of the amount of substance present and is inherent to the material itself. Thus, the correct statement is 'It is the same for every sample of a single substance.' Examples of intensive properties include temperature, density, and color.

An intensive property of matter is a characteristic that does not change based on the amount of a substance. It is independent of the quantity of the substance present and is inherent to the material itself. Therefore, the statement which best describes an intensive property of matter would be 'It is the same for every sample of a single substance.'

Examples of intensive properties include temperature, density, and color. For instance, if you divide a gold bar in half, each half will have the same density and color as the original bar, because these properties are independent of the amount of substance present.

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10. How many g of Cu(OH)2 can be made from 9.1 x 1025 atoms of O?

Answers

Molar mass Cu(OH)₂ = 97.561 g/mol

97.561 g Cu(OH)₂ --------------- 6.02x10²³ atoms
? g Cu(OH)₂ -------------------- 9.1x10²⁵ atoms

mass = 9.1x10²⁵ * 97.561 / 6.02x10²³

mass = 8.87x10²⁷ / 6.02x10²³

mass = 14734.2 g

hope this helps!

Reaction rate is the speed with which reactants are converted to products in a chemical reaction. True or False?

Answers

True. Except that it is per unit of time. Units are important in order for our chemical reactions speed to be determined properly.

Final answer:

The statement is true; reaction rate in chemistry refers to the speed at which reactants are transformed into products. Its rate is influenced by factors like concentration, temperature, and the presence of catalysts.

Explanation:

"Reaction rate is the speed with which reactants are converted to products in a chemical reaction," as stated above, is correct. In chemistry, the term Reaction Rate is used to describe how rapidly or slowly changes occur in a chemical reaction. It essentially provides information about how quickly reactants are transformed into products. Factors such as concentration, temperature, and presence of catalysts can influence the rate of a reaction.

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Please help will mark you brainiest! Use word bank when answering the question!

Answers

Answer:

Blank 1: varying

Blank 2: constant

Explanation:

Which statement correctly describes a scientific theory?

Answers

a explaination of some aspect of the natural world obtained by the scientific method

Suppose that a certain fortunate person has a net worth of $79.0 billion ($7.90×1010). If her stock has a good year and gains $3.20 billion (3.20×109) in value, what is her new net worth?

Answers

A net worth: $79.0 billion.
Value of stock : $3.20 billion.
New net worth:
$79.0 + $3.20 = $82.20 billion = $82.20 * 10^9 = $8.20 * 10^10

Answer:

$8.20 * 10^10

Explanation:

If a runner completes a 10 kilometer race in 32.50 minutes, what is the 10.0 km pace in miles per hour? (1.609 km = 1 mile approximately)

Answers

If a runner completes a 10 km race in 32.5 minutes, his pace or speed can be calculated by the equation:

velocity = distance/time = 10km/32.5 mins = 0.3125 km/min

Convert this value to miles per hour using the conversion factors for minutes to hours and kilometers to miles as requested by the problem. This gives an answer of 11.47 miles per hour.

0.3125 km/min x 60 mins./ 1 hour x 1 mile / 1.609 km = 11.47 miles/hour

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