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TiliK225 [7]
3 years ago
5

HEELLP PLEEASEE I GIVE 30 POINTS + BRAINLIEST!!!!!! HELPP PLEEAASEE

Chemistry
1 answer:
Lady bird [3.3K]3 years ago
4 0
You should be able to get the freezing water question. It is very important to know the difference between a chemical and a physical reaction. I'm going to ask that you try this one yourself.

Are you male or female? It won't help for this question. It would have if I'd known before hand. It will help me to answer you later on. Do you cook is the point? If you do, you should know something about what happens when you bake a cake. But you may not be able to guess, even if you do cook. How about dough rising (for bread or buns?) Is that chemical or physical? This time I'll tell you. It's chemical. 
To make a cake you need to blend a whole bunch of things together, sugar flour, eggs (most of the time). What happens? Do the look the same when you've finished baking?

That's right. Something new results especially to the egg. Chemical.

Burning a log is another common example. What are you left with after you've burned a log? Can you get the log back. Is there anything you can do to get the log back? If it was physical, you could. So what's left? And what do you see when you burn a log? Do you live where it snows? If you do, you must have seen a log burn. 
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Vladimir [108]
A Geiger counter is a type of particle detector that measures ionizing radiation. Geiger counters are used to detect ionizing radiation 
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4 years ago
Please help with the last problem!
CaHeK987 [17]
Radiation: Heat from the stovetop.
Conduction: Heat from Stove to Pot.
Convection: Water boiling.
I will now take my points.
8 0
3 years ago
Read 2 more answers
A gas at constant pressure occupies 0.400 L at 50.0°C. What volume will it have at 300.°C? If you could show work that would rea
DaniilM [7]

This can be solved using the Combined Gas Law. The formula for that is

\frac{P_{1} V_{1} }{T_{1} } = \frac{P_{2} V_{2} }{T_{2} }

Let's go ahead and fill in our known values. Since pressure remains the same, it doesn't matter what number we use, so let's assume 1 atm on both sides. For temperature, remember to convert it to Kelvin first (K = C + 273).

\frac{(1 atm) (0.400 L)}{(323 K)} = \frac{(1 atm) (x L)}{(573 K)}

Go ahead and simplify both sides.

0.001238 =  \frac{(x L)}{(573 K)}

Multiply both sides by 573.

0.7095 = x L

So, at 300° C, your gas will occupy 0.7095 L.

6 0
3 years ago
Spaghetti takes about 9 minutes to cook at sea level, but about 14 minutes in the mountains. Why do you think this is so?
S_A_V [24]

At high altitudes, air pressure is lower. That means that the boiling point of water is lower as well (lower air pressure means that water molecules need less energy to turn into gas), and because the water is boiling at a lower temperature it takes longer for it to cook the pasta.

hope this helps!

(:

8 0
3 years ago
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!!!!HELP PLEASE!!!!!Which of the following molecules has a trigonal pyramidal shape?
aksik [14]

Answer:

No.D is the molecules that has trigonal pyramidal sape

8 0
4 years ago
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