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Sati [7]
2 years ago
5

4 Fe + 6 H₂O + 3 O₂ → 4 Fe(OH)₃

Chemistry
1 answer:
levacccp [35]2 years ago
6 0
Someone answer my question please I need help hurry
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What is the mathematical equation used when solving calorimetry problems? What does each variable in the equation represent?
liubo4ka [24]

Answer : The mathematical equation used when solving calorimetry problems is:

q=m\times c\times \Delta T}

Explanation :

Calorimetry : It is determining the changes in the energy of a system by measuring the heat transferred with surroundings.

Formula used :

q=m\times c\times \Delta T}

where,

c = specific heat capacity  of calorimeter

m = mass of a substance

q = heat required

\Delta T = change in temperature of substance

7 0
2 years ago
Balance the Following Equations: SiCl4 + H2O = SiO2 + HCl
dimaraw [331]
The answer would be D.

SiCl4 + 2H2O → SiO2 + 4HCl (balanced equation)
5 0
2 years ago
A boy swings a rubber ball attached to a string over his head in a horizontal, circular path. The piece of string is 1.15 m long
gregori [183]

Answer:

v = 16.49 m/s

Explanation:

Given that,

Length of the string, l = 1.15 m

The ball makes 137 complete turns each minute.

We know that, 1 turn = 6.28 rad

137 turns = 860.79 rad

1 min = 60 s

\omega=\dfrac{860.79\ rad}{60\ s}\\\\=14.34\ rad/s

We need to find the tangential velocity of the ball. It can be given by

v=r\omega\\\\=1.15\times 14.34\\\\v=16.49\ m/s

So, the tangential velocity of the ball is 16.49 m/s.

5 0
3 years ago
Consider the three statements below. Which numbered response contains all the statements that are true and no false statements?
vladimir1956 [14]

Answer:

a) I, II, and III

Explanation:

For the first statement;

Solvation, is the process of attraction and association of molecules of a solvent with molecules or ions of a solute. if the solvent is water, we call this process hydration.

This means the statement is TRUE.

For the second statement;

The negatively-charged side of the water molecules are attracted to  positively-charged ions. In the case of water, the oxygen end is the negatively charged side of water. This means the statement is TRUE.

For the third statement;

The positively-charged side of the water molecules are attracted to the negatively-charged chloride ions. In the case of water, the hydrogen end is the positively charged side of water. This means the statement is TRUE.

Going through the options, we can tell that the correct option is option A.

6 0
3 years ago
A body found with rigor throughout the body
-BARSIC- [3]

Answer:

Can you move a body in rigor mortis?

Rigor mortis -- the lay version of it is stiffening of the joints. It really had nothing to do with the joints. It's the lack of chemical in the body, ATP, which is Adenosine Triphosphate. It goes away and you can now move the extremities easily after rigor mortis is gone away.

Explanation:

7 0
2 years ago
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