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aleksandrvk [35]
2 years ago
7

What’s the answer to this?

Chemistry
1 answer:
MArishka [77]2 years ago
8 0

Benzene

  • Benzene has low density than the water itself of about 0.9 g/cm³

Low denisty object than the water usually <u>floats on the water</u>.

Another example: orange peel which floats on water has density of about 0.84 g/cm³

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Calcium carbide ( CaC2) reacts with water to produce acetylene (C2H2) as shown in the unbalanced reaction below: CaC2(s)+H2O(g)-
MaRussiya [10]
Answer:
46.3g H2O

Explanation:
start by balancing it: CaC2(s) + 2H2O(g) -> Ca(OH)2(s) + C2H2(g)

then use factor label method to solve

82.4g CaC2 x (1 mol CaC2/64.10g CaC2) x (2 mol H2O/1 mol CaC2) x (18.016g H2O/1 mol H20) = 46.3g H2O
4 0
3 years ago
Determine the equilibrium constant, Kp, for the following reaction, by using the two reference equations below: 2 NO(g) + O2(g)
klio [65]

Answer:

Kp=3.07x10^6

Explanation:

Hello,

In this case, by knowing the given reference reactions, one could rearrange them as follows:

2 NO(g) \leftrightarrow N_2(g) + O_2(g); Kp_2 = \frac{1}{2.3 x 10^{-19}}=4.35x10^{18}

N_2(g) + 2O_2(g) \leftrightarrow 2NO_2(g);Kp_3=(8.4x10^{-7})^2=7.056x10^{-13}

Subsequently, to obtain the main reaction, we add the aforementioned reference rearranged reactions as shown below (just as reference):

2NO(g)+N_2(g)+2O_2\leftrightarrow 2NO_2(g)+N_2+O_2

Consequently, the equilibrium constant is computed as:

Kp=\frac{[N_2][O_2]}{[NO]^2} * \frac{[NO_2]^2}{[N_2][O_2]^2} =Kp_2*Kp_3=4.35x10^{18}*7.056x10^{-13}=3.07x10^6

Best regards.

8 0
3 years ago
Which of the following is a nonrenewable resource?
Studentka2010 [4]

The answer is C) Nuclear.

The answer is C because, Renewable resources are something that can be re-used over and over again. Then Nonrenewable resources can't be made right away once it's been used. That being said, the answer is C.

A) Geothermal can be reused, which makes it renewable.

B) Solar can also be reused, which makes it renewable.

C) Nuclear can NOT be reused, which makes it nonrenewable.

D) Biomas is indeed renewable.

8 0
3 years ago
The crust of earth may include........... A- continets and ocean floors. B-continents only. C-layers of sedimentary Rocks and co
Inessa [10]
D all of the above because it has all of them at the crust
7 0
3 years ago
Why can't an atom lose or gain a proton?
Lynna [10]
When an atom loses or gains a proton the atomic number is changed making it change what element it is.
3 0
3 years ago
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