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3 years ago

What type of change is boiling water? Why?

2 answers:

5 0

It'd be a physical change. This is because it's a change in the state of matter and not altering the chemical structure of water

ASHA 777 [7]3 years ago

4 0

When water heats to a boil, it is a physical change. The only thing that is changing is energy being added, it is still H2O.

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Katarina [22]

The statement is true in this situation is C. The size of Ffric is the same as the size of Fapp:

From the diagram, since the body is in equilibrium, the sum of vertical forces equals zero. Also, the sum of horizontal forces equal zero.

So, ∑Fx = 0 and ∑Fy = 0

Since Fapp acts in the negative x - direction and Ffric acts in the positive x - direction,

∑Fx = -Fapp + Ffric = 0

-Fapp + Ffric = 0

Fapp = Ffric

Also, since Fgrav acts in the negative y - direction and Fnorm acts in the positive y - direction,

∑Fy = Fnorm + (-Fgrav) = 0

Fnorm - Fgrav = 0

Fnorm = Fgrav

So, we see that the size of Fapp <u>equals</u> size of Ffric and the size of Fnorm <u>equals</u> the size of Fgrav.

So, the correct option is C

The statement which is true in this situation is C. The size of Ffric is the same as the size of Fapp.

Learn more about equilibrium of forces here:

brainly.com/question/12980489

5 0

2 years ago

Iron filings are placed in powdered sulfur. Both iron and sulfur are elements. The iron and sulfur are stirred together until th

Anton [14]

An element I think this is the. Aswer for it

7 0

4 years ago

7. A solution which has dissolved as much solute as it can at a particular temperature

motikmotik

I believe the answer would be Saturated.

8 0

4 years ago

How many grams of MgCl2 will be obtained when 435 mL of 0.300 M HCl react with an excess of Mg(OH)2?

Marina CMI [18]

The grams of Mg(OH)2 produced is calculated as below

calculate the moles of HCl produced =molarity xvolume/1000

= 0.3 x 435/1000= 0.1305 moles

write the equation for reaction
Mg(OH)2 +2HCl = MgCl2 + 2H2O

by use of mole ratio between HCl :MgCl2 which is 2 :1 the moles of HCl = 0.1305 x1/2 =0.0653 moles of MgCl2

mass of MgCl2 = moles x molar mass

= 0.0653mol x95 g/mol = 6.204 grams of MgCl2

3 0

3 years ago

Corn plants may be tall (TT or Tt) or short (tt). The breeding of two parent corn plants results in offspring that are all tall.

zubka84 [21]

Answer:

Explanation:

The probability that both of the parents are homozygous recessive is zero.
In our case, The gene for tallness is dominant over the gene for dwarfism
Therefore; TT is homozygous dominant while tt is homozygous recessive and Tt is heterozygous.
Heterozygous genotype (Tt) will exhibit a tall phenotype.
When two parents are crossed and all the offsprings are tall then the possible genotype of the parents is either;

Homozygous dominant for both parents or

TT x TT

2. One parent is homozygous dominant and the other is homozygous recessive.

TT x Tt

Therefore, the probability of having both parents as homozygous recessive when all the offspring are tall is Zero.

8 0

3 years ago