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Colt1911 [192]
3 years ago
14

A pure substance that only contains one type of atom is called a_____

Chemistry
2 answers:
mote1985 [20]3 years ago
8 0
Element is a pure substance that only contains one type of atom. Precipitate is a solid settled down after chemical reaction. Mixture consists of two or more substances combined together but not chemically. Compound consists of two or more substances combined together chemically. In other words option B. Element is your answer.
Pani-rosa [81]3 years ago
4 0
The answer is element, b
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diamong [38]

Answer:

The attractive force between them decreases

Explanation:

This is because they become localised.

7 0
3 years ago
How much heat is needed warm 65.34 g of water from 18.43 to 21.75
BaLLatris [955]

Given that  

Mass of water = 65.34 g

Amount of heat = mass of water * specific heat (temperature change

)

= 65.34 g * 4.184 J / g-C ( 21.75-18.43 )C

= 907.63  J  

= 0.908 KJ

And  

1 cal = 4.186798 J

907.63 J * 1 cal / 4.186798 J =216.78  cal

Or0.218 kcal  


5 0
3 years ago
Write the word and formula equations representing the chemical reaction that occurred between the. barium chloride solution , Ba
eduard
Word Equation: Barium chloride solution reacts with sodium sulfate solution to produce sodium chloride and barium sulfate.

5 0
3 years ago
For a steel stack that exhausts 1,200 m3/min of gases at 1 atm and 400 k, calculate the inner diameter if you are designing for
bonufazy [111]

The inner diameter for a steel stack that exhausts 1,200 m3/min of gases at 1 atm and 400 k is 1.45 m

<h3>What is Stack Height ?</h3>

Stack height means the distance from the ground-level elevation at the base of the stack to the crown of the stack.

If a stack arises from a building or other structure, the ground-level elevation of that building or structure will be used as the base elevation of the stack.

Given is a steel stack that exhausts 1,200 cu.m/min of gases

P= 1 atm and

T= 400 K

maximum expected wind speed at stack height of 12 m/s

The formula for the diameter of chimney

\rm d=\sqrt{\dfrac{4Q}{\pi v} }

Q =1200 cu.m/min

= 1200 * 0.0166 = 19.92 cu.m/sec

Velocity = 12m/s

\rm d=\sqrt{\dfrac{4\times 19.92}{3.14*12} }\\

d= 1.45 m

Therefore The inner diameter for a steel stack that exhausts 1,200 m3/min of gases at 1 atm and 400 k is 1.45 m.

To know more about Stack Height

brainly.com/question/24625453

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8 0
3 years ago
Classify these compounds as acid, base, salt, or other.? 1. ch3oh 3. hno3 5. nabr
ELEN [110]
<span> </span><span>1. Alcohol(other) 
3. Acid 
5. Salt 

</span>
5 0
4 years ago
Read 2 more answers
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