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Mars2501 [29]
3 years ago
5

In a modern periodic table the element are arranged in order of increasing

Chemistry
1 answer:
klemol [59]3 years ago
7 0

Answer:

what are you asking?

Explanation:

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A 36 gram sample contains 28 grams of fe and 8 grams of oxygen. determine the percent composition for each of the elements.
ankoles [38]

The sample contains both Fe and oxygen

The mass of the sample is 36 g

28 g are Fe and 8 g are O

So to find the percent composition we can calculate using the following formula

Percent composition of the element = mass of the element / mass of the sample x 100%

Percent composition of Fe = 28 g / 36 g x 100 % = 77.8%

Percent composition of O = 8 g / 36 g x 100 % = 22.2%

4 0
3 years ago
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Calculate the angle of a=1°, b=1', c= 1" in radians.
kari74 [83]
Answer 1) a=1° = 0.01745329252 radians

Explanation : According to the conversion chart, to convert 1° this formula is used;

<span>radians = degrees × π / 180°
</span>
while solving for, One degree  which is equal 0.01745329252 radians:

1° = π/180° = 0.005555556π = 0.01745329252 rad

Answer 2) b = 1' =  = 0.0002907 radians

Explanation : A minute of arc is π/10800 of radian; which is a measurement unit of angular which is equal to 1/60 of 1° degree.

So substituting the value of 1°  as  and on solving we get,

0.01745/60 = 0.0002907 radians.

A minute of arc is <span>π/<span>10800</span></span><span> of a </span>radian.

Answer 3) C= 1'' = 4.8481X 10^{-6}

Explanation - When calculating second of arc which is considered to be 1/60 of an arc minute, and 1/3600 of a degree; 

So all these are inter-related units which can be calculated if any one value is given;

<span>on solving we get, </span>π/648000 (about 1/206265) of a radian = 4.8481 X 10^{-6}
4 0
4 years ago
True or false: A liquid solution is a liquid, solid, or gas dissolved in a liquid
Tanzania [10]

Answer:

TRUE

Explanation:

hope this helped!

4 0
3 years ago
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What is alcohol made from?
jok3333 [9.3K]
 <span>In chemistry, an alcohol is any organic compound in which the hydroxyl functional group (?OH) is bound to a saturated carbon atom.</span>
5 0
3 years ago
What particle is needed to complete the following equation 14 7 n + 14 6 c +1 1 h
Rama09 [41]
1 over 0n just look at it
6 0
4 years ago
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