3 years ago

С

Chemistry

1 answer:

muminat3 years ago

5 0

The answer would be C because I did the test and I got 1 question wrong and made an 90% .

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Which statements are true of all scientific endeavors? Check all that apply.

dybincka [34]

<span>Scientific endeavors is basically all the things that would contribute to the process of achieving a certain scientific knowledge, from the initial observation, up to the point until we can hold that certain thing as acknowledged truth. So,

All scientific endeavors are supported by evidence.
All scientific endeavors are a systemic process.
All scientific endeavors involve observation.
All scientific endeavors involve experimentation.
All scientific endeavors involve the collection of information.

</span>

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3 years ago

When two or more substances combine, but each keeps its own properties, what is the new combination called A) Element B) Mixture

vodka [1.7K]

Hi.
your answer is b.
hope this helps!!!

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3 years ago

Número cuántico que designa el nivel de energía en el que se localiza un electrón:

Fed [463]

Answer:

Creo que la respuesta es n. Transalation : I think the answer is N.

Explanation:

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2 years ago

Estimate the pH of the resulting solution if you mixed equal amounts of hydrochloric acid (HCI) and sodium hydroxide (NaOH).

ioda

It obtains a neutral pH (7). The combination of a strong acid and a strong base results in a neutral pH. The pH of HCl is about 1, and the pH of NaOH is 14.

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3 years ago

What mass of cucl2 is contained in 75.85 g of a 22.4% by mass solution of cucl2 in water?

Sindrei [870]

First step: convert 22.4% into fraction
that is 22.4/100 which is equivalent to 0.224
The mass of Cucl2 contained in 75.85 of 22.4% by mass of solution of CUcl2 in water is therefore,
0.224 x75.85=16.99g
alternatively
75.85 --->100%
? 22.4%
by cross multiplication =(22.4 x 75.85)/100 =16.99g

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3 years ago