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2 years ago

A tablespoon of very hot water is added to a pint of very cold water. What will happen to the temperature of the water?

1 answer:

6 0

Well although the amount of hot water is slight, and there's much more cold water, I would assume that the water would more than likely increase in temperature.... even though it may be slight

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Which events represents a chemical change ?

8_murik_8 [283]

D milk turning sour
the other options are physical changes

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2 years ago

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Why is frying an egg an example of a chemical change

skelet666 [1.2K]

A Chemical change is any form of chemical reaction changing the state of the matter involved. When you fry an egg, you are making a reaction between the heat and the chemicals that make up the egg. Therefore once you have fried that egg, you have completed a chemical reaction. This is why it's a chemical change when you fry an egg.

8 0

2 years ago

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What is the volume, in liters, of 6.8 mol of Kr gas at STP?

Virty [35]

Answer:

$\boxed {\boxed {\sf D. \ 152 \ L}}$

Explanation:

Any gas at standard temperature and pressure (STP) has a volume of 22.4 liters per mole or 22.4 L/mol. We can create a proportion with this value.

$\frac {22.4 \ L \ Kr}{1 \ mol \ Kr}$

Multiply both sides of the equation by 6.8 moles of krypton.

$6.8 \ mol \ Kr *\frac {22.4 \ L \ Kr}{1 \ mol \ Kr}$

The units of moles of krypton will cancel.

$6.8 *\frac {22.4 \ L \ Kr}{1 }$

The denominator of 1 can be ignored, so this becomes a simple multiplication problem.

$68 * 22.4 \ L \ Kr$

$152.32 \ L \ Kr$

If we round to the nearest whole number, the 3 in the tenths place tells us to leave the 2 in the ones place.

$152 \ L \ Kr$

6.8 moles of krypton gas at standard temperature and pressure is equal to <u>152 liters</u>.

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2 years ago

Which kind of food contains lots of carbphydrates? chicken, cheese. potatoes, nuts

Evgesh-ka [11]

Cheeze is the most one i hope it helps

8 0

2 years ago

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A ________ is any device connected to a network such as a computer, printer, or game console.

Helga [31]

Answer:

Node

Explanation:

Other examples of nodes include servers, personal computers, hubs switches, modems, and etcetera. These devices must be connected together in a network such as an Ethernet or WiFi. These nodes are given addresses depending on the communications layer they operate on the network.

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2 years ago