All categories

3 years ago

PLEASE HELP!! How could using either more or less of a chemical in a scientific experiment cause a change in results?

Chemistry

1 answer:

charle [14.2K]3 years ago

4 0

The chemical could have more or less of a reaction to the other chemicals in the experiment

You might be interested in

QUESTION 1 The ____________________ fan switch is nothing more than a thermostat that closes on a rise in temperature to start t

AVprozaik [17]

Answer:

temperature controlled

7 0

3 years ago

Elements in the periodic table are listed in order of their -----

sattari [20]

Answer:

In numerical order left to right, they are arranged by the number of protons in the nucleus of a single atom of each element

4 0

3 years ago

Read 2 more answers

What is the formula of haso4

ladessa [460]

Explanation:

The structure of Ferrarrisite Ca5(HAs O4)2(AsO4)2

8 0

3 years ago

During a titration the following data were collected. A 50.0 mL portion of an HCl solution was titrated with 0.500 M NaOH; 200.

Travka [436]

<u>Answer:</u> The mass of HCl present in 500 mL of acid solution is 36.5 grams

<u>Explanation:</u>

To calculate the concentration of acid, we use the equation given by neutralization reaction:

$n_1M_1V_1=n_2M_2V_2$

where,

$n_1,M_1\text{ and }V_1$ are the n-factor, molarity and volume of acid which is HCl

$n_2,M_2\text{ and }V_2$ are the n-factor, molarity and volume of base which is NaOH.

We are given:

$n_1=1\\M_1=?M\\V_1=50.00mL\\n_2=1\\M_2=0.500M\\V_2=200.mL$

Putting values in above equation, we get:

$1\times M_1\times 50.00=1\times 0.500\times 200\\\\M_1=\frac{1\times 0.500\times 200}{1\times 50.00}=2M$

To calculate the mass of solute, we use the equation used to calculate the molarity of solution:

$\text{Molarity of the solution}=\frac{\text{Mass of solute}\times 1000}{\text{Molar mass of solute}\times \text{Volume of solution (in mL)}}$

Molar mass of HCl = 36.5 g/mol

Molarity of solution = 2 M

Volume of solution = 500 mL

Putting values in above equation, we get:

$2mol/L=\frac{\text{Mass of solute}\times 1000}{36.5g/mol\times 500}\\\\\text{Mass of solute}=\frac{2\times 36.5\times 500}{1000}=36.5g$

Hence, the mass of HCl present in 500 mL of acid solution is 36.5 grams

4 0

3 years ago

Which order system shows the levels of organization from largest to smallest

Yanka [14]

Answer:

the answer is organism tissue organ system organ cell

7 0

3 years ago