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Flura [38]
3 years ago
6

A certain drug is made from only two ingredients: compound A and compound B. There are 7 milliliters of compound A used for ever

y 5 milliliters of compound B. If a chemist wants to make 1116 milliliters of the drug, how many milliliters of compound A are needed?
Chemistry
1 answer:
eduard3 years ago
4 0

Answer:

First step:

7 ml + 5 ml = 12 ml

Second step:

% of A = 7/12 x 100 = 58.33%

% of B = 5/12 x 100 = 41.67%

Third step:

In 1116 ml

compound A = 1116 x (58.33/100) = 651 ml

compound B = 1116 x (41.67/100) = 465 ml

Explanation:

In the 1st step: with what is given, the total volume is 12 ml

In the 2nd step: Find the percentage of each compound in the drug according to what is given.

In the 3rd step: calculate the volume of each compound separately in the new total volume of 1116 ml using the percentage composition.

volume of compound A will therefore be 651 milliliters

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Which statement correctly compares a person and theory
Bumek [7]

Answer:

Hypothesis is a predictive statement which relates two or more phenomena.

It is tested to observe or to see whether it is true or false with the help of scientific means.

it relates dependent and independent factors with each other

Theory is a tested and proved framework which explains single or multiple observed phenomena

It is thoroughly proved and tested through experiments and observations.

it is strongly supported by scientific evidences and observations.

Hence, a hypothesis is a prediction for a specific situation, while a theory is used to make predictions for many similar situations.

Explanation:

hope this helps :)

4 0
4 years ago
Kira dissolved different solutes in 100 ml of water. She recorded the amount of each solute that would dissolve at different tem
Radda [10]
This information confirms that temperature and solubility are related. The higher the temperature is, the more soluble.
8 0
2 years ago
What mass of chloride gas will react with 96.6g of sodium?
Oduvanchick [21]
Molar mass :

Cl₂ =  71.0 g/mol        Na = 23.0 g/mol

<span>2 Na + Cl</span>₂<span> = 2 NaCl
</span>
2 x 23 g Na -------> 71.0 g Cl₂
96.6 g Na ----------> ?

Mass Cl₂ = ( 96.6 x 71.0 ) / ( 2 x 23 )

Mass Cl₂ = 6858.6 / 46

= 149.1 g of Cl₂

hope this helps!

8 0
4 years ago
Phosphorus-32 is radioactive and has a half life of 14.3 days. What percentage of a sample would be left after 12.6 days
nadya68 [22]

Answer:

There is 54.29 % sample left after 12.6 days

Explanation:

Step 1: Data given

Half life time = 14.3 days

Time left = 12.6 days

Suppose the original amount is 100.00 grams

Step 2: Calculate the percentage left

X = 100 / 2^n

⇒ with X = The amount of sample after 12.6 days

⇒ with n = (time passed / half-life time) = (12.6/14.3)

X = 100 / 2^(12.6/14.3)

X = 54.29

There is 54.29 % sample left after 12.6 days

8 0
3 years ago
What is the total number of chlorine atoms in the formula for aluminum chlorate?
ANEK [815]

Answer: Al(ClO3)3 molecular weight.

Explanation:

5 0
3 years ago
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