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N76 [4]
3 years ago
15

Marcel conducts an experiment to test which stain remover works best on mustard stains. He wants to make sure that he does not m

ake mistakes and has correct data in his experiment. What should Marcel do to make sure that his data are correct? conduct a similar experiment with a different washing machine ask other students to conduct related experiments at their homes ask his sibling to conduct the same experiment using his washing machine repeat the experiment several times with the same variable and constants
Chemistry
2 answers:
skelet666 [1.2K]3 years ago
5 0

Answer: Repeat the experiment several times with the same variable and constants.

Explanation: The experimental procedure should be performed many times so as to determine the effect of the stain remover on mustard stain in different conditions and while using different variables such as water and type of machine used. This will tell how useful the stain remover in all conditions provided to check the accuracy of the stain remover.

Hope this help!!! :)

Zina [86]3 years ago
4 0

Answer:

C

Explanation:

if his brother does the expire end it is replication if he was to do the same expirement with the same variables then the same outcome would come out

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Is gold amalgamation a chemical reaction with gold and mercury?
iren [92.7K]

Answer:

gold amalgamation is the mixing of gold and Mercury.

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4 years ago
In the reaction __S+3O2→2SO3, what coefficient should be placed in front of the S to balance the reaction?
AleksAgata [21]

Answer:

2

Explanation:

because on the product side you have 2 sulfurs so you need 2 on the reactant side.

7 0
3 years ago
A reaction between liquid reactants takes place at −10.0°C in a sealed, evacuated vessel with a measured volume of 45.0L. Measur
maks197457 [2]

Answer: 0.0624 atm

Explanation:-

According to the ideal gas equation:

PV=nRT

P = Pressure of the gas = ?

V= Volume of the gas = 45.0 L

T= Temperature of the gas = -10.0°C = 263 K    0^00C=273K

R= Gas constant = 0.0821 atmL/K mol

n= moles of gas

Moles of gas=\frac{\text{ given mass}}{\text{ molar mass}}= \frac{19.0g}{146g/mole}=0.130moles

P=\frac{nRT}{V}=\frac{0.130\times 0.0821\times 263}{45.0}=0.0624atm

The pressure of sulfur hexafluoride gas in the reaction vessel after the reaction is 0.0624 atm

3 0
3 years ago
"The difference in our frame of reference between schools of wild Blue Fin Tuna and wild populations of many types of "land base
KengaRu [80]

Answer:

1. Wildlife

2. Seafood

Explanation:

1. Wildlife refers to the species which are not domesticated by the humans and they live as a wild organisms in the areas which are not interfered with the humans. In the given question, the wild creatures that live on the land therefore are considered a part of the wildlife.

2. Seafood refers to the species which are considered as food which humans get from the sea. In the given question, the Blue Fin fishes are considered a seafood therefore.

7 0
3 years ago
Why is it important to use scientific notation when talking about our solar system<br> and galaxies?
IgorLugansk [536]

Answer:

The main purpose for converting numbers into scientific notation is to make calculations with surpisingly large or small numbers less complicated. Since zeros are not used to place the decimal point, all of the digits in a number in scientific notation are meaningful and easier to read. Hope this helps!

Explanation:

3 0
3 years ago
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