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abruzzese [7]
3 years ago
15

Helen adjusts the armature of an electric generator by increasing the number of coils around the iron core. what is helen most l

ikely trying to do?
Chemistry
2 answers:
Zanzabum3 years ago
4 0

Answer: Helen is trying to increase the current through an electric generator.

Explanation:

Electric generator is a device that converts mechanical energy to electrical energy.

The main functions of the armature are: To generate an electromotive force and to create a shaft torque in a rotating machine. By changing the number coils around an armature, the electric current can be increased or decreased.

In the given problem, Helen adjusts the armature of an electric generator by increasing the number of coils around the iron core. She is trying to increase the current through an electric generator.

Veseljchak [2.6K]3 years ago
3 0
Increase the amount of current

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How many milliliters of a 1.25 molar HCL solution would be needed to react completely with 60 g of calcium metal
Svet_ta [14]
Ca + 2HCl = CaCl₂ + H₂

m(Ca)=60 g
c=1.25 mol/l
M(Ca)=40g/mol
v-?

m(Ca)/M(Ca)=m(HCl)/[2M(HCl)]=n(HCl)/2

n(HCl)=2m(Ca)/M(Ca)

n(HCl)=cv

cv=2m(Ca)/M(Ca)

v=2m(Ca)/{cM(Ca)}

v=2·60g/mol/{1.25mol/l·40g/mol}=2.4 l = 2400 ml

2400 milliliters of a 1.25 molar HCl solution would be needed

3 0
3 years ago
The wolf gets enegry from____
Alenkasestr [34]

Answer:

The wolf gets energy from other Animals through Cellular respiration. it's a carnivore

The rabbit gets energy from Carbohydrates,Fats.... obtained through different sources. A common example is the grass. It's an herbivore

The plant gets energy from the sun during photosynthesis. It's Autotrophic.

The mushroom gets energy from the decomposition of other organic matter. It's heterotrophic.

Explanation:

In a food chain; The Wolf eats the rabbit, when the Wolf dies, decomposers such as mushrooms breaks down its body returning it to the soil, where it provides nutrients for plants

4 0
2 years ago
In a DNA sample, 15% of the bases are thymine (T). What percentage of the bases in this sample are cytosine (C)?
allochka39001 [22]

Answer:

C) 35%

Explanation:

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3 0
3 years ago
What kind of bond occurs between two<br> elements sharing three pairs of electrons?
Zigmanuir [339]
Covalent bond i believe
6 0
2 years ago
2 C2H6 + 7 026 H2O + 4 CO2
Kay [80]

Answer:

Oxygen is limiting reactant

Explanation:

Based on the chemical reaction:

2C2H6 + 7O2 → 6H2O + 4CO2

<em>2 mole of ethane reacts with 7 moles of oxygen</em>

<em />

For a complete reaction of 5.25 moles of ethane are required:

5.25 moles Ethane * (7mol Oxygen / 2mol Ethane) = 18.38 moles of oxygen

As there are just 15.0 moles of oxygen

<h3>Oxygen is limiting reactant</h3>
3 0
2 years ago
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