Ask question

Ask question

All categories

3 years ago

13

Which is the best hypothesis to use for this investigation?

1 answer:

pochemuha3 years ago

6 0

Your hypothesis is not the scientific question in your project. The hypothesis is an educated, testable prediction about what will happen. Make it clear. A good hypothesis is written in clear and simple language. ... (For more information about identifying variables, see: Variables in Your Science Fair Project

You might be interested in

In the covalent bond between hydrogen and chlorine in the HCl molecule, where will the majority of shared electrons be found?

Mrac [35]

Nearer to the chlorine as it has a greater electronegativity

5 0

3 years ago

Read 2 more answers

A spoonful of salt is stirred into a pot of water.The salt is a

pshichka [43]

Answer:

the salt is a solute in this instance

4 0

3 years ago

Which part of the atom is so small it contributes very little to the mass of an atom

sasho [114]

My part of the atom, I'm guessing you are referring to the protons, neutrons, and electrons.

The smallest of these three is the electron.

8 0

4 years ago

The absorbance of a cationic iron(II) sample solution was measured in a spectrophotometer, but the instrument returned an error

JulijaS [17]

Answer:

$1.35\times 10^{-4} M$ was the concentration of the original solution.

Explanation:

$M_1V_1=M_2V_2$ (Dilution)

where,

$M_1\text{ and }V_1$ are molarity and volume of non diluted sample.

$M_2\text{ and }V_2$ are molarity and volume of diluted sample.

$M_1=?$

$V_1=100.0 \mu L=0.1 mL$

(1μL=0.001 mL)

$M_2=6.41\times 10^{-6} M$

$V_2=2.00 mL + 100.0 \mu L=2.00 mL+0.1 mL=2.1 mL$

Substituting all values :

$M_1\times 0.1 mL=6.41\times 10^{-6} M\times 2.1 mL$

$M_1=\frac{6.41\times 10^{-6} M\times 2.1 mL}{0.1 mL}=1.35\times 10^{-4} M$

$1.35\times 10^{-4} M$ was the concentration of the original solution.

5 0

3 years ago

HELP!!! I need "2 KClO3 (s) → 2 KCl (s) + 3 O2 (g)" in word form

baherus [9]

I don’t get it what do u need exactly?

8 0

3 years ago