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stepladder [879]
3 years ago
15

Please anyone please this is due today!! help for a BRAINLIEST

Chemistry
1 answer:
horsena [70]3 years ago
6 0

Answer:

Explanation:

Im sorry all i know is that #3 is for sure combustion

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Compare how fast the rate of CO2 increase is in the last few hundred years with the rate of increase (or decrease, for that matt
Tcecarenko [31]

The rate of CO2 increase is in the last few hundred years is 10 times more with the rate of increase (or decrease, for that matter) in the preceding 400,000 years.

There are many possible reasons for this cause , some primary factors are listed below:

  1. Increase in population
  2. increased emission of green house gases, as we all know auto mobile industry is growing rapidly and this vehicles releases harmful gases like CO2, CO ,etc. and increases carbon % , this CO2 is a main gas component in green house effect.
  3. Deforestation, as the amount of plant decreases the CO2 present in atmosphere increases, plants uses CO2 and sun lite to make their food via photosynthesis.
  4. Increased emission of Industrial flue gases, etc.

Learn more about green house effect here...

brainly.com/question/19521661

#SPJ1

7 0
2 years ago
An engine cylinder contains 175 mL of gas at a pressure of 1.0 atm. As the engine runs, it compresses the cylinder, reducing the
sukhopar [10]

This problem is providing the initial volume and pressure of a gas in an engine cylinder and asks for the final pressure once the volume of the gas has decreased due to a compression. At the end, the result turns out to be 11.7 atm.

<h3>Boyle's law</h3>

In chemistry, gas laws allow us to calculate pressure, volume, temperature or moles depending on a specified change and based on the concept and equation of the ideal gas, which derives the well-known gas laws; Boyle's, Charles', Gay-Lussac's and Avogadro's.

Thus, since this problem provides initial and final volume and initial pressure for us to calculate the final pressure, we understand we need to apply the Boyle's law as a directly proportional relationship between these two:

P_1V_1=P_2V_2

Thus, we solve for the final pressure, P2, to get:

P_2=\frac{P_1V_1}{V_2}=\frac{1.0atm*175mL}{15mL}\\ \\ P_2=11.7atm

Learn more about ideal gases: brainly.com/question/8711877

8 0
3 years ago
HELP ASAP
Vika [28.1K]
Equilibrium constant of a reaction is the ratio of concentrations of the products and the reactants when the reaction is in equilibrium. This value is independent of the concentrations since the conditions are at equilibrium instead it depends on ionic strength and temperature.

First, we write the equilibrium expression.

K = [H2S]^2 / [H2]^2 x [S2]
K = (0.725^2) / [(0.208^2) (1.13 x 10^-6)]
K = 10751545.56 or 1.08 x 10^7

Thus, the answer is A.
4 0
3 years ago
What happens when you heat a sugar and water mixture?
a_sh-v [17]
Sugar dissolves faster in hot water than it does in cold water because hot water has more energy than cold water. When water is heated, the molecules gain energy and, thus, move faster. As they move faster, they come into contact with the sugar more often, causing it to dissolve faster.
3 0
2 years ago
Read 2 more answers
The average flowrate of hydrochloric acid solution from a plant is 11,900 Lt/hr. The density is the same as that of water (1kg/L
skelet666 [1.2K]

Answer:

See explanation.

Explanation:

Hello,

Here, considering the given flowrate, we perform the following units conversions for each case:

(i)

11,900 \frac{L}{h} *\frac{0.264172 gal}{1L} *\frac{1h}{60min} =52.39\frac{gal}{min}

(ii)

11,900 \frac{L}{h} *\frac{1kg}{1L}*\frac{2.20462lbm}{1kg}=26,234\frac{lbm}{h}

(iii)

11,900 \frac{L}{h} *\frac{0.015gmolHCl}{1L}*\frac{1h}{60min}=2.975\frac{gmolHCl}{min}

(iv) We find the kg of HCl per kg of acid solution:

w_{HCl}=0.015\frac{gmolHCl}{Lsln}*\frac{36.45gHCl}{1gmolHCl} *\frac{1kgHCl}{1000gHCl}*\frac{1Lsln}{1kgsln} =5.4675x10^{-4}

(v)

n_{HCl}=0.015\frac{gmolHCl}{L}*\frac{1000L}{1m^3}  *1m^3=15gmolHCl

Best regards.

8 0
3 years ago
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