Answer:
See Explanation
Explanation:
Let the mass of salt be x
Let the mass of solution be 10 g
Percentage by mass of salt = 0,25%
So;
Percent concentration of salt = mass of salt/mass of solution * 100
0.25 = x/10 * 100
0.25 * 10/100 = x
x= 0.025 g of salt
Let the mass of water be y
Since mass of solution = mass of salt + mass of water
10 g = 0.025 g + y
y = 10 g - 0.025 g
y = 9.975 g
Answer:
There are two major categories of energy: renewable and non-renewable.
Non-renewable energy resources are available in limited supplies, usually because they take a long time to replenish. The advantage of these non-renewable resources is that power plants that use them are able to produce more power on demand. The non-renewable energy resources are:
Renewable resources, on the other hand, replenish themselves. The five major renewable energy resources are:
- Biomass, or organic material from plants and animals
- Geothermal, which is naturally occurring heat from the earth
While renewable energy resources have the advantage of unlimited supply over the long haul, they are limited in their availability at any given moment.
For example, the sun rises each day, but its ability to generate power is limited when its cloudy. Another disadvantage is that power plant operators can’t crank up renewable energy production when people are consuming more power, such as on a hot day when many people are running air conditioners at the same time.
Both of the compounds contain primary bonding; however, the bonding is of different types. Magnesium chloride (MgCl₂) contains ionic bonds, which are stronger and involve the complete transfer of electrons. Meanwhile, ethane (C₂H₆) also bonds by electron transfer but the electrons are not completely transferred from one atom to another. Instead, they are shared, forming what is known as a covalent bond.
Answer:
Hydronium ion is not an electrophile because, its positive charge is on oxygen and its octet is filled.
Explanation:
