Describe how is the atomic mass of an atom is calculated.URGENT, NEED TO KNOW NOW!!!

Answers

Answer 1

Answer: If it's your first encounter with chemistry, your instructor will want you to learn how to use the periodic table to find the atomic mass (atomic weight) of an element. This number usually is given below an element's symbol. Look for the decimal number, which is a weighted average of the atomic masses of all the natural isotopes of an element.

Related Questions

100 g of radioactive mass has a half lifeof 5 days Calculate the mass decayedoff after 15 days
Which best describes the difference between a physical change and a chemical change? A. A chemical change does not result in a new substance being formed, whereas a physical change does. B. A physical change is a change from one state of matter to another; a chemical change results in a new substance formed. C. A physical change produces a new element, and a chemical change results in a bond breaking between atoms. D. A chemical change results in a new element being formed, and a physical change results in a new compound being formed.
How many moles are in 25 L of O2?
HSiCl3+H2O=H10Si10O15+HCl
What is an example of chemical energy transforming into electrical energy?-wood burning to make a fire-atoms splitting to make heat which in turn turns a generator to make electricity-car battery turning a car on-food making you run

Express the product of 3.2 and 5.00 using the correct number of significant digits.

Answers

Answer: $1.6* 10^1$

Explanation:

Significant figures : The figures in a number which express the value -the magnitude of a quantity to a specific degree of accuracy is known as significant digits.

Rules for significant figures:

Digits from 1 to 9 are always significant and have infinite number of significant figures.

All non-zero numbers are always significant.

All zero’s between integers are always significant.

All zero’s preceding the first integers are never significant.

All zero’s after the decimal point are always significant.

The rule apply for the multiplication and division is :

The least number of significant figures in any number of the problem determines the number of significant figures in the answer.

Thus for product of $3.2* 5.00=16$

In this problem, 3.2 has 2 significant figures and 5.00 has 3 significant digits thus product will have the least number of significant figures which is 2. So, the answer will be in 2 significant figures.

Therefore, the answer is $1.6* 10^1$

So 3.2 × 5 = 16 hope this helps

Why did the United States government set aside land for the first national parks?A.

They wanted to settle the west as quickly as possible.

B.

They worried people would destroy the animals and land.

C.

They worried Native Americans wouldn’t have anywhere to go.

D.

They wanted to make sure all citizens would get a piece of land.

Answers

B) They worries people would destroy the animals and land.

Answer:

Explanation:

hope it helps

Which of the following summarizes photosynthesis?glucose + carbon dioxide → oxygen + water
carbon dioxide + water → glucose + oxygen + water
oxygen + water → glucose + carbon dioxide + water
carbon dioxide + oxygen → glucose + oxygen + water

Answers

carbon dioxide + water → glucose + oxygen + water

Explain whether nitrogen atoms will form bonds with other atoms

Answers

Nitrogen can also bond with otherthree atoms because of its outer shell (valence shell) that has three electrons.This is the reason why organic molecules can be so large because of thisbonding. Suppose you have a compound of NH3. You know that hydrogen can onlyshare 1 electron because 7 of its electrons are filled. Also, in nitrogen, it canonly share 3 electrons because 5 of it are already filled. That is why nitrogenneeds three hydrogen to form NH3.

If the pH of a solution is 5.3, what is the pOH?
A.5.3
B.4.7
C.8.7
D.9.3

Answers

The correct answer is C) 8.7

What does pH answer mean?

The pH of a solution indicates the acidity or basicity of the answer. A solution is said to be neutral if the pH is 7, if the pH fee is less than 7 then it is acidic in nature and if the pH cost is greater than 7 then the solution is simple in nature.

What does pH stand for?

Ph may appear as it belongs at the periodic desk of factors, however, it's truly a unit of size. The abbreviation pH stands for ability hydrogen, and it tells us how an awful lot hydrogen is in drinks—and the way active the hydrogen ion is.

What's the pH of a solution?

PH is a measure of the attention of H+(aq) ions in an answer. The attention of H+ ions may be stated in mol dm(-three), but the use of the log(10) feature simplifies the numbers concerned. Definition: pH is the terrible logarithm to base 10 of the hydrogen ion awareness in an aqueous solution.

Learn more about the solution here: brainly.com/question/251701

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Sort the sentences based on whether the attributes they describe belong to planets or an object that isn't a planet.The object orbits the
The object is a satellite
Sun
The regions surrounding
the object are free from
debris
The object is triangular
in shape.
Planet
Not a Planet
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