All categories

3 years ago

How many significant digits will the answer in the following calculations result in?

Chemistry

1 answer:

Reil [10]3 years ago

7 0

Answer:

The answer will result in one significant digit.

Explanation:

1. Subtract:

12.1 - 12.004 = 0.096

2. ROund to the correct number of significant digits:

For addition and subtraction we round the sum or the difference to the least number of digits after the decimal point there are in the problem.

For example, SInce 12.1 has one number after the decimal point and 12.004 has three numbers after the decimal point, we round the answer to one number after the decimal point because 12.1 is the number in the problem which has the least amount of digits after the decimal point.

We round 0.096 to 0.1.

0.1 has one significant digit.

You might be interested in

Convert 3.45 g/ml to lb/in^3

Alja [10]

The answer is

0.124639157 pounds.

I converted it.

5 0

3 years ago

What are the parts of this water wheel system?Label the water wheel to show the matter and forms of energy that flow through the

Setler79 [48]

Answer:

Water, wheel and paddles or bucket are the parts and mechanical energy is produced.

Explanation:

The parts of water wheel system are water, wheel and paddles or bucket. The main purpose of water wheel system is to generate useful energy by using the flowing or falling of water on the wheel. We use this water wheel system for the conversion of kinetic energy into mechanical energy such as water mill or hydroelectric plant in which the blades movement is responsible for the generation of electricity.

6 0

3 years ago

In an ionic compound, the size of the ions affects the internuclear distance (the distance between the centers of adjacent ions)

gregori [183]

Answer:

The correct answer will be " RbF > RbCl > RbBr > Rbl".

Explanation:

The size of the given ions will be:

RbCl:

⇒ 689kJ/mol

RbBr:

⇒ 660kJ/mol

Rbl:

⇒ 630kJ/mol

RbF:

⇒ 785kJ/mol

Now according to the size, the arrangement will be:

⇒ (785kJ/mol) > (689kJ/mol) > (660kJ/mol) >(630kJ/mol)

⇒ RbF > RbCl > RbBr > Rbl

The bond among all opposite charging ions seems to be strongest whenever the ions were indeed small.

6 0

3 years ago

What percentage of the atmosphere is carbon dioxide?.

stellarik [79]

Answer:

Explanation:

the answer is 4% , hope this help

5 0

2 years ago

Please help me (number which answer is which number)

Klio2033 [76]

1) An endothermic reaction is a reaction where heat is "absorbed" and the surrounding area is cooled. An example of an endothermic reaction is the classic baking soda and vinegar reaction. The mixture gets cold.
An exothermic reaction is one which gives off heat, such as burning, which is itself a chemical reaction.

2) (I don't actually know this one but i hope i helped with number one)

7 0

4 years ago