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Yuri [45]
3 years ago
5

How many moles are in an 8.40 grams of a non electrolyte solution

Chemistry
1 answer:
Crazy boy [7]3 years ago
6 0

Answer: you need to define what is the substance

Which mass is 8.40 g. If you mean you have pure

Water, amount of substance n = m/M = 8.40 / 18.016 g/ mol

= 0.466 mol

Explanation:

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The basic principle in balancing a chemical equation is to ______.
earnstyle [38]

Answer: obey the law of conservation of mass.

Explanation:

The law of conservation of mass states that matter can not be created nor be destroyed but can be transformed from one form to another. Whenever one balance an equation, if the equation is not balance it means something has be destroyed or created, this we give an ideal that the equation is not balance or wrong.

6 0
3 years ago
which of the following oils (coconut or safflower)would you use to prepare a soap that is a soft and why?
Veseljchak [2.6K]
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6 0
3 years ago
In your bathroom you leave the faucet dripping. If the faucet leaks 30.0 drops/minute, how much water will you waste after 3.00
Verizon [17]

First let's convert the minutes to hours (multiply minutes by 60 to get hours):

30 × 60 = 1,800 drops/hour

Now that you know how much drops there are per hour, you can multiply this answer by 3 to work out how many drops there are in 3 hours:

1,800 × 3 = 5,400 drops

We know that 5 drops is equal to 1 ml, so we can divide 5,400 by 5 to work out the amount of ml:

5,400 ÷ 5 = 1,080 ml

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4 0
3 years ago
The time required for one-half of the atoms from a sample of a radioactive substance to decay is called its _____.
Orlov [11]
A.) half - life of a radioactive substance is defined as the time during which concentration of the substance becomes half the initial value.
8 0
3 years ago
Read 2 more answers
Lab Report
Alenkasestr [34]

Answer:

I know some of them...

Explanation:

1. What was the purpose of the experiment?

Type your answer here: The purpose of this experiment is to show that a cell membrane is a type of barrier, and is permeable to some substances, but may not be permeable to all substances.

2. What were the independent, dependent, and control variables in your investigation? Describe the variables used in the part of the experiment with the eggs.

Type your answer here: Independent variable / Manipulated variable: Refers to all the variables in an experiment that provoke a response in another variable. This variable is modified during the experiment to analyze how another variable responds to it. The researcher wants to study how the changes in these variables affect the dependent variable.  The researcher can change these variables to see what changes it implies in an object, process, trait, or anything that depends on them.

Dependent variable / Responding variable: Its response depends on any change in the independent variable. The dependent variable is the one that is being investigated, studied, and measured. It represents a quantity of something which value depends on how the independent variable is modified. It is usually identified by the letter Y.  A change in the dependent variable might be proportional or inversely proportional to the change in the manipulated variable. In the exposed example, the dependent variable is the egg circumference.

Constants / Controlled variables: Refers to those variables in an experiment that are controlled and have no influence on the results. These variables do not affect the change in the dependent variable values. In the exposed example the use of the lid to seal the jar and the amount and concentration of vinegar might be considered as a controlled variable. These elements are used but do not provoke any change in the size of the egg.

thats it... CAN SOMEONE ANSWER THE OTHERS?! I NEED ITT

4 0
3 years ago
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