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3 years ago

What is an example of conduction, raditaon convection

Chemistry

1 answer:

Tom [10]3 years ago

3 0

Answer:

convection could be a pot on a stove, radiation could be the sun and heat waves, and conduction could be a cup with coffee.

Explanation:

Conduction occurs when two objects are in direct contact with each other.

Convection is the transfer of heat through liquids and gases. Convection occurs above a hot surface because hot air expands and rises and is replaced by cooler, denser air.

Radiate energy is given off by a hot object and directly absorbed by another cooler object. This cause the cooler object to get warmer. Radiation can occur even if no air is present.

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What are three ways of measuring the amount of substance?

Rashid [163]

Answer:

Measure its mass

Measure its volume

Measure its number of moles

Explanation:

3 0

2 years ago

Can anyone help with properties of non-metals?

Katen [24]

Dull (not shiny)
poor conductors of heat and electricity (they are insulators)
weak and brittle (they easily break or shatter when solid)

3 0

3 years ago

Two 0.75 Amp loads are connected in parallel with a 2500 Milliamperehour Ni-Cd battery. Approximately how long can the battery p

nikdorinn [45]

Explanation:

It is given that two loads have 0.75 Ampere current each. And, they contain 2500 milli ampere per hour Ni-Cd battery.

As both the loads are connected in parallel. Hence, total current will be calculated as follows.

I = $I_{1} + I_{2}$

= 0.75 A + 0.75 A

= 1.5 A

= $1.5 A \times \frac{1000 mA}{1 A}$

= 1500 mA

Relation between time and capacity of battery is as follows.

Capacity = Current × time (in hour)

therefore, time = $\frac{Capacity}{Current}$

= $\frac{2500 mA. h}{1500 A}$

= 1.667 hr

Thus, we can conclude that the battery provide power to the load up to 1.667 hours.

4 0

3 years ago

A mixture of oxygen, hydrogen, and nitrogen exerts a total pressure of 378 kPa. If the partial pressures of oxygen and hydrogen

sertanlavr [38]

What's the relationship between total and partial pressure? The total pressure is the sum of the parcial pressures!

So for us, it would be:

378= 212+101+x

where x is the parcial pressure of nitrogen.

Now we count:
378= 212+101+x
378=313+x
378-313=x
65=x

So the parcial pressure exerted by nitrogen is 65!

8 0

3 years ago

What happens when sugar is heated? Give a balanced equation

mario62 [17]

Answer:

when the sugar is heated it turn out in caramelize

8 0

3 years ago