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-BARSIC- [3]
3 years ago
11

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 <em><u>loops</u></em> to the <em><u>wire</u></em><em><u>.</u></em>

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

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In the first law of thermodynamics, Δ e=q-w what does q stand for
VLD [36.1K]
Answer:
the heat exchange between the system and the surrounding medium

Explanation:
The first law of thermodynamics states that: "Energy can neither be created nor destroyed, but can convert from one form to another"
It is represented mathematically as:
<span>Δ e=q-w
where:</span>
<span>Δ e is the total change in the system's internal energy
q is </span><span>the heat exchange between the system and the surrounding medium
w is the work done either on the system or by the system

Hope this helps :)
</span>
5 0
3 years ago
10. 17.5 g of NaOH were dissolved in 350 mL of water. The solution was titrated with HNO3 to a methyl orange endpoint (methyl or
Tomtit [17]

1747.2 ml of HNO3 is required to reach methyl orange endpoint.

Explanation:

Number of moles of NaOH solution having 17.5 gram NaOH in 350ml of water.

Atomic weight of NaOH = 40 g/mol

thus number of moles= 17.5/40

                                      =  0.437 moles

Now the molarity of the solution is calculated as

M=n/C

  = 0.437/O.35 LITRES

  = 1.248 M solution of the base

the molarity of acid is given as 0.25 M of HNO3

From the formula

M1V1=M2V2  we can calculate the volume of HNO3 required to make solution acidic.

1.248*350= 0.25*v2

v2=  1.248*350/0.25

     = 1747.2 ml

Thus 1747.2 ml of HNO3 is required.

3 0
3 years ago
The ____________________ metals are all of the elements located in groups 3-12 on the Periodic Table.
S_A_V [24]

Answer:

Transition Metals are all of the elements kn group 3-12.

6 0
4 years ago
Question 47
olasank [31]

Answer:

84.27 g

Explanation:

<em>How many grams of hydrogen are in 10.45 moles of C₃H₈?</em>

Step 1: Calculate the moles of atoms of hydrogen

The molar ratio of C₃H₈ to H is 1:8.

10.45 mol C₃H₈ × 8 mol H/ 1mol C₃H₈ = 83.60 mol H

Step 2: Calculate the mass corresponding to 83.60 moles of hydrogen

The molar mass of hydrogen is 1.008 g/mol.

83.60 mol × 1.008 g/mol = 84.27 g

4 0
4 years ago
Hurry 60 points<br><br> Can two green fish mate and have orange offspring? <br><br> why or why not
Mademuasel [1]

Answer: Yes

Explanation:

This simulates the way offspring are formed by sperm from the male fish combining randomly with eggs from the female fish.

4 0
3 years ago
Read 2 more answers
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