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3 years ago

Help please!! I need to turn this in by midnight! EST

Chemistry

1 answer:

nignag [31]3 years ago

8 0

Answer:

FIREWORKS : WHEN FIREWORKS EXPLODE THEY EXPEL SMOKE WHICH IS A FORM OF GAS AND THEY LIGHT UP WHICH IS ANOTHER CHEMICAL REACTION AND OF COURSE THE WHOLE FIREWORK GETS HOT ( Temperature rises )

Explanation:

you could see your reaction happens when original substance changes in color temperature formation produces light or gas in many other things

( besides it's original form! )

answer what changed from it's original form!

ex: baking a cake:

the cake change form ( rising ) due to heat ( rising temperature )

REACTION WAS:

- formation of precipitate ( solid to settle out of a solution )

- change I'm temperature to bake the cake

Extra:

you got this!

I hope I helped even just a little!

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Heather ran 100 meters in 20 seconds. What is her speed? Just type the number, no labels.

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She ran at either 5m/s
Or 11.185 miles/hr

Explanation:
Aight well if she did 100m in 20s then that’s 5m/s which would also be 11.185M/h
m = meters
M = miles

Hope this helps!

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2 years ago

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Which planet’s surface is covered with red,iron-oxide dust?

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In nematode worms, a gene that codes for an ATPase has two alternatives for exon 4 and three alternatives for exon 7. How many d

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Answer:

6 different forms of the protein could be made.

Explanation:

For the given nematode worm, 6 different forms of the protein could be made. This is because of the alternative splicing that will produce 6 kinds of mRNAs. We have 2 different forms for the exon 4 while we have 3 differen forms for the exon 7. Therefore, we have a total of (2*3) 6 different forms of the protein for the given nematode worm.

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4 years ago

What is the chemical name for LiC2H3O2 or C2H3O2Li

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AWAWDWDAD

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3 years ago

What volume of a substance will have a mass exactly 750 g if the specific gravity of the substance is 12.2

Ket [755]

The volume of the substance is 61.4 litres.

Explanation:

Specific density is the ratio of density of a substance at a given temperature with the density of reference substance.

Data given:

mass = 750 grams

specific gravity = 12.2

volume=?

The formula to be used:

Specific gravity = $\frac{density of the object}{density of the reference substance}$

suppose the other substance is water so its density is 1g/ml at 4 degrees

Putting the values to the equation:

density of the object = 1 x12.2

density of the substance = 12.2

Now using the formula:

density = $\frac{mass}{volume}$

putting the values in the equation:

volume = $\frac{750}{12.2}$

= 61.4ml is the volume of the substance.

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3 years ago