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3 years ago

What is Centripetal force?

Chemistry

1 answer:

makvit [3.9K]3 years ago

6 0

A. A force that acts on a body moving in a circular path

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When was tin discovered tin is an element please help 75 pts

torisob [31]

It was used from the Bronze Age(3000 BC) and tin was used in the bronze.

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4 years ago

Complete combustion of 2.0 metric tons of coal to gaseous carbon dioxide releases 6.6X10¹⁰ J of heat. Convert this energy to

Taya2010 [7]

First of all we should know that, 1 Joule = 0.000239 kilocalories.

So, 6.6× $10^{10}$ J = 6.6× $10^{10}$ × 0.000239 kilocalories

6.6× $10^{10}$ J = 15774000 kilocalories

= 1.58 × $10^{7}$ kilocalories

One joule is described as the quantity of electricity exerted when a pressure of 1 newton is implemented over a displacement of 1 meter. Within the SI machine, the unit of labor or electricity is the Joule.

The kilocalorie, or meals calorie, is the quantity of warmth required to elevate one kilogram of water 1 °C. warmness capability is the amount of heat required to raise one gram of material 1 °C beneath steady pressure. A kilocalorie is the amount of warmth required to raise the temperature of 1 kilogram of water one diploma Celsius.

Learn more about joule here:-

brainly.com/question/490326

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2 years ago

How does the distance between the planet Earth and the Sun compare with the distances between the planet Earth and other stars?

Gnom [1K]

Answer:D

Explanation:

We call it the sun Bc it’s the closest star and the one we orbit around

6 0

3 years ago

What is the frequency of this wave? 1 2 3 4

lilavasa [31]

Hey it is
2

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3 0

3 years ago

Read 2 more answers

Which solute would be more effective at lowering the freezing point of water: MgCl2 and KNO3? Explain.

Phantasy [73]

Answer:

AlCl₃.

Explanation:

Adding solute to water causes depression of the boiling point.

The depression in freezing point (ΔTf) can be calculated using the relation:

ΔTf = i.Kf.m,

where, ΔTf is the depression in freezing point.

i is the van 't Hoff factor.

van 't Hoff factor is the ratio between the actual concentration of particles produced when the substance is dissolved and the concentration of a substance as calculated from its mass. For most non-electrolytes dissolved in water, the van 't Hoff factor is essentially 1.

Kf is the molal depression constant of water.

m is the molality of the solution (m = 1.0 m, for all solutions).

(1) NaCl:

i for NaCl = no. of particles produced when the substance is dissolved/no. of original particle = 2/1 = 2.

∴ ΔTb for (NaCl) = i.Kb.m = (2)(Kf)(1.0 m) = 2(Kf).

(2) MgCl₂:

i for MgCl₂ = no. of particles produced when the substance is dissolved/no. of original particle = 3/1 = 3.

∴ ΔTb for (MgCl₂) = i.Kb.m = (3)(Kf)(1.0 m) = 3(Kf).

(3) NaCl:

i for KBr = no. of particles produced when the substance is dissolved/no. of original particle = 2/1 = 2.

∴ ΔTb for (KBr) = i.Kb.m = (2)(Kf)(1.0 m) = 2(Kf).

(4) AlCl₃:

i for AlCl₃ = no. of particles produced when the substance is dissolved/no. of original particle = 4/1 = 4.

∴ ΔTb for (CoCl₃) = i.Kb.m = (4)(Kf)(1.0 m) = 4(Kf).

So, the ionic compound will lower the freezing point the most is: AlCl₃

4 0

3 years ago

Read 2 more answers