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BabaBlast [244]
3 years ago
15

Dryers work with forced_____.One word answer please ​

Chemistry
2 answers:
olga2289 [7]3 years ago
8 0
(static) electricity
Zina [86]3 years ago
7 0

Answer:

electricity

Explanation:

I'm not 100% sure though

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Explain in your own words how DDT moved through the environment starting with spraying the farm crops
S_A_V [24]

Answer:

here and a cylinder have the same radius and height. The volume of the cylinder is .



What is the volume of the sphere?









Mark this and

7 0
3 years ago
Drag the tiles to the correct boxes. Not all tiles will be used.
gizmo_the_mogwai [7]

Answer:

metre measures length

kilogram measures mass

time is seconds

Explanation:

I have matched correctly. Just check SI units and there measures.

4 0
2 years ago
"I think my bike is making a scraping noise because the bearings are not lubricated."
GuDViN [60]

Answer:

B

Explanation:

"I think my bike is making a scraping noise because the bearings are not lubricated."

4 0
3 years ago
An experiment to measure the enthalpy change for the reaction of aqueous
Komok [63]

Given that, an experiment to measure the enthalpy change for the reaction of aqueous copper(II) sulfate, CuSO4(aq) and zinc, Zn(s) was carried out in a coffee cup calorimeter; the heat of the reaction in the whole system is calculated to be 2218.34 kJ

Heat of reaction (i.e enthalpy of reaction) is the quantity of heat that is required to be added or removed when a chemical reaction is taken place in order to maintain all of the compounds present at the same temperature.

The formula used to calculate the heat of the reaction can be expressed as follows:

Q = mcΔT

where:

  • Q = quantity of heat transfer
  • m = mass
  • c = specific heat of water = 4.18 kJ/g °C (constant)
  • ΔT = change in temparature

From the information given:

  • The initial temperature (T₁) = 25° C
  • The final temperature (T₂) = 91.5° C

∴

The change in temperature i.e. ΔT = T₂ - T₁

ΔT = 91.5° C - 25° C

ΔT = 66.5° C

The number of moles of CuSO₄ = 1.00 mol/dm³ × 50.0 cm³

\mathbf{= (1 \times \dfrac{50}{1000})\ moles}

= 0.05 moles

  • Since the molar mass of CuSO₄ = 159.609 g/mol

Then;

Using the relation:

\mathbf{number \ of \ moles = \dfrac{mass}{molar \ mass}}}

By crossing multiplying;

mass of CuSO₄ = number of moles of CuSO₄ ×  molar mass of CuSO₄

mass of CuSO₄ = 0.05 moles  × 159.609 g/moles

mass of CuSO₄ = 7.9805 grams

∴

Using the formula from above:

Q = mcΔT

Q = 7.9805 g × 4.18 kJ/g °C × 66.5° C

Q = 2218.34 kJ

Therefore, we can conclude that the heat of the reaction is 2218.34 kJ

Learn more about the chemical reaction here:

brainly.com/question/20250226?referrer=searchResults

8 0
2 years ago
Which of the following might be an indicator of global warming?
kolbaska11 [484]

Answer: The correct answer is A. average increase in the temperatures near Earth's surface

Explanation: The reason this is correct is that global warming is it getting hotter, logically the temperatures near Earth's surface will be getting hotter as well. Hope this helps

6 0
3 years ago
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