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zysi [14]
3 years ago
12

QUESTION 7

Chemistry
1 answer:
natima [27]3 years ago
3 0
A this is so confusion
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What is one way to create a negative ion?
san4es73 [151]

Answer:

Burn beeswax candles. They clean the air, produce negative ions, and assist with allergy and asthma reduction. Run an indoor water fountain. The force or energy of falling water causes the neutral particles in air to split which frees electrons to attach to other air molecules resulting in negative ions.

Explanation:

8 0
3 years ago
Which of the following can best be described as speed plus direction?A: AccelerationB: DecelerationC: FrictionD: Velocity
KATRIN_1 [288]

Answer:

D

Explanation:

Because speed is a scalar quantity which he has only magnitude and no direction while velocity is a vector quantity because it has both magnitude and direction.

3 0
3 years ago
A certain ore is 24.3% nickel by mass. how many kilograms of this ore would you need to dig up to have 55.0 g of nickel?
zysi [14]
Let x be the mass of the ore in grams such that the equation that would allow us to answer this item would be,

                     55 = (x)(0.243)

The value of x is calculated as,

                 x = 55/0.243
                   x = 226.337 grams

Then, solve for amount in kilograms by dividing the calculated value by 1000. This methodology will give us an answer of 0.226337. Hence, the answer is 0.226. 


4 0
3 years ago
Daniel has a sample of pure copper. Its mass is 89.6 grams (g), and its volume is 10 cubic centimeters (cm3). What’s the density
vlada-n [284]

Density = mass /volume = 89.6/10 = 8.96gm/cm^3.

8 0
3 years ago
Which of the following statements is true?
siniylev [52]
A DNA and chromosomes are found in different types of cells
7 0
3 years ago
Read 2 more answers
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