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Alika [10]
4 years ago
10

Two angles with measures (6x + 60) (90) are supplementary. What is the value of x?

Chemistry
2 answers:
fredd [130]4 years ago
5 0
Supplementary angles add up to 180, so
6x+60+90 = 180 and solve for x
6x= 30
x=5
pishuonlain [190]4 years ago
4 0
Exiting or five because in gem Dos you have to do parentheses first from left to right size 6X +60 is already simplified times 90 now you move your parentheses so you would multiply 16 times 9016×90 whatever that is you would add that to six facts which is not
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Isopropyl alcohol is mixed with water to produce a 35.0 % (v/v) alcohol solution. How many milliliters of each component are pre
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229.25 mL of isopropyl alcohol

425.75 mL of water

Explanation:

Knowing that the solution have a 35.0 % (v/v) isopropyl alcohol in water, we can calculate the volume of each component as following.

volume of  isopropyl alcohol = (35/100) × solution volume

volume of  isopropyl alcohol = 0.35 × 655 mL = 229.25 mL

Now, knowing the volume of isopropyl alcohol we can determine the volume of water.

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percent by volume concentration

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3 years ago
Which formula contains two nonmetals
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Answer:

Nonmetal + Nonmetal —> covalent compound (usually)

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3 years ago
There are 31.1 grams (g) in 1 troy ounce (ozt). How many ozt of gold are extracted from 1 short ton of average Nevada ore
devlian [24]

This problem is providing us with the mass equivalent to one troy ounce. Thus, the troy ounces of gold in one short ton of average Nevada ore is required and found to be the 0.103 otz according to the following dimensional analysis.

<h3>Dimensional analysis</h3>

In chemistry, a raft of problems do not always provide an equation in order to be solved yet dimensional analysis can be applied, so as to obtain the desired amount in the required units.

Thus, since this problem asks for try ounces in an average Nevada ore,  which has 3.2 grams of gold per short ton of ore, one can solve the following setup in order to obtain the required answer in otz:

\frac{3.2gAu}{1short-ton}*1short-ton*\frac{1otz}{31.1g} \\

Where the short tons are cancelled out as well as the grams, in order to obtain:

0.103 otz

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2 years ago
True or false: Fungi are able to carry out photosynthesis, similar to plants
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false

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7 0
3 years ago
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