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Lemur [1.5K]
3 years ago
5

What two quantities must be known to calculate the density of a sample of matter? A) mass and volume B) length and mass C) size

and weight D) weight and volume
Chemistry
2 answers:
vichka [17]3 years ago
5 0
I think the answer is a) mass and volume
Svetradugi [14.3K]3 years ago
4 0

Answer:

A

Explanation:

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What can we use to help us predict the results of reaction when we put metals into competition?
Effectus [21]

The activity series of metals as well as the electrode potential of metals can be used to compare the reactivity of metals.

<h3>What is used in comparing reactivity of metals?</h3>

The reactivity of metals can be compared using their electrode potentials which is a measures of the ability of the metal to donate electrons to another metal.

When comparing the reactivity of metals, the metal with the lesser negative electrode potential will be more reactive than another with a greater negative or positive electrode potential.

Therefore, the activity series of metals as well as the electrode potential of metals can be used to compare the reactivity of metals.

Learn more about activity series of metals at: brainly.com/question/17469010

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7 0
2 years ago
Which of the following describes a characteristic of water that makes it cohesive in nature?
Yuri [45]

Answer:

it has a huge electronegativity difference between it's atoms

8 0
3 years ago
Which direction does the decimal move from mega meters to meters
Temka [501]

To solve this problem, let us first understand what does mega meters mean. Now by definition, mega means a factor of one million which is a unit prefix in Metric Systems of units. It is denoted by the unit symbol M.

So for example if we have a mega of something, it means a million of something. So in this case, if we have 1 mega meter, what it means is 1 million meter, which is written as:

1 mega meter = 1,000,000 meter

 

To show the decimal points:

1.0 mega meter = 1,000,000.0 meter

 

So we see that the decimal point move 6 zeroes to the right, therefore the direction is to the right.

 

Answer:

<span>6 places to the right</span>

7 0
3 years ago
the student determines the molar mass of the gas to be 64 g mol-1. write the expression (set-up) for calculating the percent err
sleet_krkn [62]

Answer:

Percentage error = \frac{(64 - 58)}{58} x 100%

Explanation:

In order to calculate the percentage error in the student's calculation, the following formula will be used:

Percentage error = \frac{(experimental molar mass - theoretical molar mass)}{theoretical molar mass} x 100%

experimental molar mass = 64 g/mol

theoretical molar mass = 58 g/mol

Hence, the expression becomes:

Percentage error = \frac{(64 - 58)}{58} x 100%

7 0
3 years ago
1. Find the student's percent error for the density of a peanut. The student measured the density to
mash [69]

Answer:

Ř̈́´‰

Explanation:

´˛∏Òˆ˜ÅˇˆØ˜ i made the answer a secret code

8 0
3 years ago
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