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3 years ago

What 2 factors increase the validity of a scientific experiment?

Chemistry

2 answers:

zalisa [80]3 years ago

8 0

Answer:

You can increase the validity of an experiment by controlling more variables, improving measurement technique, increasing randomization to reduce sample bias, blinding the experiment, and adding control or placebo groups.

Explanation:

Nimfa-mama [501]3 years ago

7 0

Answer:

Controlling more variables and improving measurement technique.

Btw, I like your profile picture lol

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How is heat produced in a chemical change

Snezhnost [94]

Answer:Hola UwU

Most chemical reactions involve the breaking and formation of chemical bonds. It takes energy to break a chemical bond but energy is released when chemical bonds are formed. If more energy is released than consumed, then the chemical reaction evolves heat and is said to be exothermic.

Explanation:Adios~ UnU haha

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3 years ago

Which of the following is a physical property of a substance?

vaieri [72.5K]

B boiling point https://chem.libretexts.org/Bookshelves/Introductory_Chemistry/Map%3A_Introductory_Chemistry_(Tro)/03%3A_Matter_and_Energy/3.05%3A_Differences_in_Matter%3A_Physical_and_Chemical_Properties#Summary

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3 years ago

Can someone help me please? I’d appreciate it! Also please do not send me a link or delete your answer! Thanks

chubhunter [2.5K]

Answer:

14.53ML

Explanation:

V1=218

V2=?

P2=15p1

USING BOYLE'S LAW

P1V1=P2V2

V2=P1V1/P2=P1(218ML)/15P1

=14.53ML

5 0

3 years ago

Which equation illustrates conservation of mass?

saul85 [17]

Answer: d

explanation: in both reactants and products there are 2 hydrogen and 2 chlorine atoms

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3 years ago

Please help ASAP! Will mark brainiest if correct

Scilla [17]

Answer: 1 is A

2 is C

3 is D

Hope this help

7 0

3 years ago