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Ahat [919]
3 years ago
6

How many liters of O2 will form at STP if 22.5 g H2O2 react?

Chemistry
1 answer:
Mumz [18]3 years ago
3 0

Answer: 7.41 L of O2

Explanation:

2H2O2(l) ----> 2H2O(l) + O2(g)

22.5 g H2O2  x __1 mol__ x __1 mol O2__ x __22.4 L__ = 7.41 L of O2

                            34.016 g       2 mol H2O2       1 mol O2

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Como clasificarias la máquina de la siguiente ilustración? tijera​
Lina20 [59]

Answer:

<u><em></em></u>

  • <u><em>máquina simple: palanca</em></u>

Explanation:

En vista de que  la pregunta está realizada en español, la respuesta la doy en el mismo lenguage.

La<em> palanca</em> es una máquina simple que consiste en una barra rígida que puede girar alrededor the un punto the pivote.

La forma en que functiona una palanca es que se aplica la ferza en el extremo de la barra que está más alejado del pivote. Este extremo puede desplazarse una larga distancia o arco, con una fuerza pequeña, haciendo que los puntos que están al otro lado del pivote, a una menor distancia de este, se desplacen una distancia o arco menor pero con más fuerza que la aplicada.

6 0
3 years ago
Need help ASAP please show your work
VikaD [51]

Answer:

q = 14049 J

Explanation:

q = m*c*(t2-t1)

q = 350 * 0.892 * (70-25) =

312.2 * 45 = 14049 J

I might be getting a little confused but I could be right.

Hope this helps!

4 0
3 years ago
What is the volume of 40g of sugar given it’s listed density
lora16 [44]

Answer:

25.157 cm³

Explanation:

Data Given:

Mass of Sugar (m) = 40g

Density of sugar given in literature = 1.59 g/cm³

Volume of Sugar = ?

The formula will be used is

                              d = m/v ........................................... (1)

where

D is density

m is the mass

v is the volume

So

Rearrange the Equation (1)

                              d x v = m

                               v = m/ d         ................................................ (2)

put the given values in Equation  (2)

                       v = 40g / 1.59 g/cm³

                       v = 25.157 cm³

volume of 40 g of sugar = 25.157 cm³

8 0
3 years ago
Which of the following factors is the most in-<br> fluential in the formation of soil?
Shtirlitz [24]
B. climate
this is because it influences the speed of chemical reactions in the soil







4 0
3 years ago
What product(s) are formed during the complete combustion reaction that occurs when methane (CH4) and molecular oxygen (O2) reac
Vilka [71]

Answer: CO2 and H2O

Explanation: I already took the test it's right

3 0
3 years ago
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