Answer:
d The energy from the sun heated the water, causing it to evaporate.
Explanation:
The correct description of what happened is that the energy from the sun heated the water and causes it to evaporate completely.
Evaporation is a phase change process in which liquid is converted to gases. This occurs when a liquid gains considerable amount of energy. The molecules then breaks free from the bond holding compound place.
- Option A is wrong because the energy from the sun does not cause condensation i.e. change from gas to liquid.
- The water on the seat does not boil, it simply evaporates. So, option B is wrong.
- When heat energy is added, it does not cause cooling of water. So option C is wrong.
The correct definition of density is the degree of compactness of a substance.
Answer:
The volume of hydrochloric acid increases.
Explanation:
- Le Châtelier's principle states that when there is an dynamic equilibrium, and this equilibrium is disturbed by an external factor, the equilibrium will be shifted in the direction that can cancel the effect of the external factor to reattain the equilibrium.
- Increasing the volume of water vapors:
will increase the the concentration of the products side, so the reaction will be shifted to the left side (backward) to suppress the increase in the concentration of water vapors by addition.
So, The volume of hydrochloric acid increases, the rate of backward reaction increases, the rate of forward reaction decreases, and the volume of chlorine decreases.
<em>So, the right choice is: The volume of hydrochloric acid increases.</em>
<em></em>
Answer:
![m_{CO_2}=45gCO_2](https://tex.z-dn.net/?f=m_%7BCO_2%7D%3D45gCO_2)
Explanation:
Hello there!
In this case, since the combustion of butane is:
![C_4H_{10}+\frac{13}{2} O_2\rightarrow 4CO_2+5H_2O](https://tex.z-dn.net/?f=C_4H_%7B10%7D%2B%5Cfrac%7B13%7D%7B2%7D%20O_2%5Crightarrow%204CO_2%2B5H_2O)
Thus, since the molar mass of butane is 58.12 g/mol and that of carbon dioxide is 44.01 g/mol, we obtain the following mass of CO2 product:
![m_{CO_2}=15gC_4H_{10}*\frac{1molC_4H_{10}}{58.12gC_4H_{10}} *\frac{4molCO_2}{1molC_4H_{10}} *\frac{44.01gCO_2}{1molCO_2} \\\\m_{CO_2}=45gCO_2](https://tex.z-dn.net/?f=m_%7BCO_2%7D%3D15gC_4H_%7B10%7D%2A%5Cfrac%7B1molC_4H_%7B10%7D%7D%7B58.12gC_4H_%7B10%7D%7D%20%2A%5Cfrac%7B4molCO_2%7D%7B1molC_4H_%7B10%7D%7D%20%2A%5Cfrac%7B44.01gCO_2%7D%7B1molCO_2%7D%20%5C%5C%5C%5Cm_%7BCO_2%7D%3D45gCO_2)
Best regards!
Answer:
number of plants that grow in the ocean
Explanation:
<em>The dependent variable would be the number of plants that grow in the ocean.</em>
The dependent variable is the actual variable being measured in an experiment. The value of dependent variables is directly affected by another variable in an experiment - the independent variable. The latter is the manipulatable variable that is directly inputted during experiments.
In the illustration, the main aim of the experiment is to determine how CO2 levels in ocean water affect the number of plants that can grow in the ocean. The manipulatable input variable would be the CO2 while the outcome variable - the dependent variable - would be t<u>he number of plants that grow in the ocean.</u>