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PSYCHO15rus [73]
3 years ago
15

Suppose you were writing a summary of the article. Which of these will be most important to put in the summary?

Chemistry
1 answer:
NISA [10]3 years ago
5 0
Which of what? I don’t see a picture.
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What two factors most affect the pitch of the sounds made by a person's vocal cords? A. the volume and health of the person's lu
dusya [7]

Answer:

The pitch of the sound a person makes is determined by several factors, including the size and tension of his or her vocal cords.

Explanation:

6 0
3 years ago
6. Cuando se oxidan en el aire 12,120 g de vapor de Zinc se obtienen 15,084 g del óxido. ¿Cuál es la fórmula empírica del óxido?
Eddi Din [679]

Answer:

 12120 g  +    O2        =    15084 g

m Zn = 12.120 Kg

m óxido = 15.084 Kg

1. calcular la masa de cinc en gramos

g = 12,120 Kg x 1000 = 12120 g de cinc

g = 15.084 Kg x 100 = 15084 g de oxígeno

2.  calcular gramos de Oxigeno

g O = 15084 g - 12120 g = 2964 g O2

3. calcular % de Zn y O

%m/m ( m soluto / m solc.) x 100

%m/m (Zn) =  ( 1210 g / 15084 g ) x 100

% m/m (Zn) = 80.35 % = 80.35 g

%m/m (O) =  ( 2964 g / 15084 g ) x 100

% m/m (Zn) = 19.65 %  = 19.65 g

4. Calcular moles de cada elemento

Zn: 80.35 g / 65.38 g/mol = 1.228 mol

O: 19.65 g / 16 g/mol = 1.228 mol

5. dividir entre el menor de los elementos

Zn: 1.228 mol / 1.228 mol = 1

O: 1.228 mol / 1.228 mol = 1

6. Fórmula empírica: ZnO

3 0
3 years ago
What is the last step in the scientific method?
nataly862011 [7]

Answer:

D

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Because do all of that and then you do a conclusion

8 0
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Female energy the answer is the first one
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Question 7 unsaved liquid water can store more heat energy than an equal amount of any other naturally occurring substance becau
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Has the highest specific heat.
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