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nikdorinn [45]
2 years ago
9

Percent yield refers to the relationship between the predicted amount of product

Chemistry
1 answer:
dsp732 years ago
5 0
True because it actually formed I know
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If you have an initial water level in a graduated cylinder of 15 mL and your
ki77a [65]

Answer:

The answer is

<h2>0.5 g/mL</h2>

Explanation:

The density of a substance can be found by using the formula

density =  \frac{mass}{volume} \\

From the question

mass of aluminum = 2 g

volume = final volume of water - initial volume of water

volume = 19 - 15 = 4

volume = 4 mL

The density of the metal is

density =  \frac{2}{4}   =  \frac{1}{2}  \\

We have the final answer as

<h3>0.5 g/mL</h3>

Hope this helps you

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3 years ago
Which of the following is NOT a symbol for an element? H Li Pb HF
sp2606 [1]
HF because an element is always a capital then a lowercase letter
3 0
3 years ago
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EASY 8TH GRADE SCIENCE PLEASE HELP
oksano4ka [1.4K]
Digesting bread is an example of physical change.
Hope this helps!
5 0
3 years ago
7-¿Cuántos moles de CO2 estarán encerrados en un recipiente metálico a una presión de 1.10 Atm. y una temperatura de 31 °C, sabi
Aleks [24]

Answer:

7- 0.69 moles.

8- El nuevo volumen es 3.8L.

Explanation:

7- Usando la ley general de los gases:

PV = nRT

PV / RT = n

<em>P es presión = 1.10atm</em>

<em>V es volumen = 15.70L</em>

<em>R es constante de los gases = 0.082atmL/molK</em>

<em>T es temperatura absoluta = 31°C + 273.15K = 304.15K</em>

<em />

Reemplazando:

1.10atm*15.70L / 0.082atmL/molK*304.15K = n

<h3>0.69 moles</h3><h3 />

8- La ley combinada de los gases establece como ecuación:

P1V1 / T1 = P2V2 / T2

<em>Donde P1 es la presión inicial = 760mmHg</em>

<em>V1 volumen inicial = 2L</em>

<em>T1 es temperatura absoluta = 273.15 + 27 = 300.15K</em>

<em>P2 = 380mmHg</em>

<em>T2 = 12°C + 273.15 = 285.15K</em>

<em />

Reemplazando:

760mmHg*2L / 300.15K = 380mmHg*V2 / 285.15K

3.8L = V2

<h3>El nuevo volumen es 3.8L</h3>
4 0
2 years ago
Help please?? I’m confused
Nady [450]
It’s c. O stands for oxygen and h stands for hydrogen. They both do play in the roll
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3 years ago
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