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krek1111 [17]
2 years ago
15

1. we used __________ to represent an element.

Chemistry
2 answers:
Ludmilka [50]2 years ago
8 0

Answer:

1. we used <u>chemical</u><u> </u><u>formula</u> to represent an element.

choice a. is correct

2. the chemical formula of a molecule shows the <u>number and kind of atoms contained in the molecule</u>.

choice c. is correct

3. which of the following is an atom?

= K [Potassium]

choice a. is correct

4. which of the following is a molecule?

= CO [Carbon Monoxide]

choice d. is correct

scoundrel [369]2 years ago
6 0

▪▪▪▪▪▪▪▪▪▪▪▪▪  {\huge\mathfrak{Answer}}▪▪▪▪▪▪▪▪▪▪▪▪▪▪

1. we used <u>Symbol</u> to represent an element.

2. The chemical formula of a molecule shows the <u>number and kind of atoms contained in the molecule</u>.

3. K (potassium) is the atom among the given choices.

4. CO (carbon - monoxide) is the molecule among given choices.

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Ignore the answer I have selected but please help!! Ty in advance, also please explain
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Answer:

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Explanation:

4 0
2 years ago
What is enthalpy of atomisation
Komok [63]
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5 0
3 years ago
What is the (OH-) in a solution with a pOH of 6.48
inn [45]
Through manipulation of equations, we are able to obtain the equation:

-pOH= log [ OH^{-}]

Then we can transform the equation into:

[ OH^{-}]= 10^{-pOH}

Then we are able to plug in the pOH and directly get [OH-]:

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3 0
3 years ago
Un camion que circula a 90 km hora frena uniformemente con una aceleracion de -5 metros por segundos al cuadrado
kozerog [31]

Answer:

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Explanation:

7 0
2 years ago
What is the final pressure of a system (atm) that has the volume increased from 0.75 l to 1.1 l with an initial pressure of 1.25
lana66690 [7]
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PV = k
where P - pressure , V - volume and k - constant 
P1V1 = P2V2
where parameters for the first instance are on the left side and parameters for the second instance are on the right side of the equation 
substituting these values in the equation 
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P = 0.85 atm 
final pressure is B) 0.85 atm 
3 0
3 years ago
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