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3 years ago

What will increase the strength of an electromagnet?

Chemistry

2 answers:

myrzilka [38]3 years ago

8 0

B. Wrapping the wire around a piece of paper

In-s [12.5K]3 years ago

8 0

The Answer will be :

=》A. Adding more loops to the wire.

We can increase the strength of electromagnet by increasing current flowing through it, increasing number of loops or placing a soft iron core inside it.

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Excess Ca(OH)2 is shaken with water to produce a saturated solution. The solution is filtered, and a 50.00 mL sample titrated wi

julia-pushkina [17]

Answer: The $K_{sp}$ for calcium hydroxide is $5.324\times 10^{-6}$

Explanation:

To calculate the concentration of acid, we use the equation given by neutralization reaction:

$n_1M_1V_1=n_2M_2V_2$

where,

$n_1,M_1\text{ and }V_1$ are the n-factor, molarity and volume of acid which is $HCl$

$n_2,M_2\text{ and }V_2$ are the n-factor, molarity and volume of base which is $Ca(OH)_2$

We are given:

$n_1=1\\M_1=0.0983M\\V_1=11.22mL\\n_2=2\\M_2=?M\\V_2=50mL$

Putting values in above equation, we get:

$1\times 0.0983\times 11.22=2\times M_2\times 50\\\\M_2=0.011M$

The concentration of $Ca(OH)_2$ comes out to be 0.011 M.

The balanced equilibrium reaction for the ionization of calcium hydroxide follows:

$Ca(OH)_2\rightleftharpoons Ca^{2+}+2OH^-$

The expression for solubility constant for this reaction follows:

$K_{sp}=[Ca^{2+}][OH^-]^2$

Putting the values in above equation, we get:

$K_{sp}=(0.011)\times (2\times 0.11)^2$

$K_{sp}=5.324\times 10^{-6}$

Hence, the $K_{sp}$ for calcium hydroxide is $5.324\times 10^{-6}$

6 0

3 years ago

Read 2 more answers

Is cutting paper with scissors a non physical change

AleksAgata [21]

No, cutting paper is a physical change, as you are changing how the paper appears.

hope this helps

6 0

4 years ago

Read 2 more answers

How do you find out how many protons,electrons, and neutrons an atom has?

Evgen [1.6K]

So the atomic number is the same as protons, and electrons and to get neutrons by subtracting number of protons from atomic mass.

8 0

3 years ago

If part of one of your mothers chromosomes broke off and wasn't transferred to you before you were born, which of the following

kari74 [83]

The answer is letter choice A

6 0

3 years ago

The molecule CH₂O contains two single bonds and one double bond. True or false

Tamiku [17]

Answer:

The answer to your question is True

Explanation:

CH2O is a polar molecule. It has three polar bonds that are arranged asymmetrically, thus allowing their dipole moments to add up and give the molecule an overall dipole moment. CH2O has a central carbon atom that forms two single bonds with the two hydrogen atoms and a double bond with the oxygen atom.

I hope this helps and have a good day!

3 0

2 years ago