Answer: 0.050M urea, 0.10M glucose, 0.2M sucrose, pure water
Explanation:
Vapor pressure refers to the ease with which a liquid substance is transformed into vapour. High vapour density implies that the liquid is easily transformed into gas. Pure water is expected to have the lowest vapour density since it is held by strong intermolecular forces in the liquid state. Urea is an organic liquid held by weak Van der Waals forces hence its extremely high vapor pressure.
Answer: Humans are increasingly influencing the climate and the earth's temperature by burning fossil fuels, cutting down forests and farming livestock.
Explanation: This adds enormous amounts of greenhouse gases to those naturally occurring in the atmosphere, increasing the greenhouse effect and global warming.
Answer:
Electrons are negatively charged particles that orbits the nucleus
Explanation:
Chemical and physical properties of elements are usually determined by the number of electrons they posses. When atoms combine, they do so in order to attain stability.
Answer:
10.04 g of NaOH is required for neutralization
Explanation:
neutralization reaction:
Molar mass of NaOH = 40 g/mol
Molar mass of HCl = 36.5 g/mol
So, 9.16 g of HCl = moles of HCl = 0.251 moles of HCl
According to neutralization reaction, 1 mol of NaOH is required to neutralize 1 mol of HCl
So, 0.251 moles of NaOH are required to neutralize 0.251 moles of HCl
So mass of NaOH required for neutralization = () g = 10.04 g
Answer:
Explanation:
1. Convert cubic feet to litres
2. Calculate the mass of vanillin
3. Calculate the cost of the vanillin