What's a good science project?

2 answers:

6 0

I would look up STEM fair projects, I recently had to do one for AP chem but in all honesty my project kinda sucked, haha. It was basically figuring out if the initial temperature of a substance affected the rate at which it froze.

KengaRu [80]3 years ago

5 0

Pour Milk In A Bowl, Add Lots Of Food Dye Colors But Don't Mx Them In. Take A Q-Tip And Dip It In Dish Soap. Stick It In The Milk's Center and WOAH COLOR EXPLOSION. This Reaction Works Because The Soap Is Breaking Down The Fat In The Milk, And The food dye lets you SEE THAT PROCESS!

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How many moles would a 3.9 g sample of Calcium Chloride contain?

gtnhenbr [62]

Answer:

You can view more details on each measurement unit: molecular weight of CaCl2 or grams This compound is also known as Calcium Chloride. The SI base unit for amount of substance is the mole. 1 mole is equal to 1 moles CaCl2, or 110.984 grams.

7 0

3 years ago

Balance the following redox equation using the oxidation-number-change method. Show your work, describing each step.

nexus9112 [7]

2HNO3+3H2S ——>2S+4H2O+2NO

5 0

4 years ago

Bond length is the distance between the centers of two bonded atoms. on the potential energy curve, the bond length is the inter

Alisiya [41]

Answer:Hence, the bond length in HCl is 125 pm.

Explanation:

Bond length : It is an average distance between the nuclei of two bonded atoms in a molecule.

Also given that bond length is the distance between the centers of two bonded atoms. on the potential energy curve, the bond length is the inter-nuclear distance between the two atoms when the potential energy of the system reaches its lowest value. Beyond this if atoms come closer to each other then their will be repulsion between them.

So, the bond length between the Hydrogen and Chlorine atom in HCl molecule is :

$Bond length=radius _{hydrogen}+radius_{chlorine}=25pm+100pm=125pm$