Answers
Answer:
1. C
2. A
3. A
Explanation:
Related Questions
Which objects should not be thrown in landfills because they could leach into groundwater and pollute the water?
A. paints
B. aluminum foil
C. plastics
D. paper
Answers
I put 5 pigs, 2 goats, and 7 horses in a boat with six cats. How many dogs are in that one Disney movie with all the dogs?
Answers
Answer:
the average weight of a frog is 0.8 ounces, so your answer would be 4
Answer:
one hundred and one
Explanation:
3. What do you think is the primary reason why the Unionid mussel population declined whenever there is a dramatic increase in the Zebra mussel population?
Answers
When the Zebra arrived they ate all the food in the area leaving Unionid numbers to decline and die as they have no food to eat.
What do you infere about using nonrenweable vs renewable resources and the effect this has on the cost of energy
Answers
Answer:
See explanation
Explanation:
Renewable energy resources refers to energy resources that can not be depleted such as wind, solar, biomass etc.
Non-renewable energy resources refers to those energy resources that can be depleted such as fossil fuels.
Globally, it has been established that energy from renewable sources costs less than energy from nonrenewable(especially fossil fuel) sources.
According to Forbes, 2019, "The worldwide weighted average cost of electricity from solar power concentration fell by 26%, that of bioenergy reduced by 14%, solar photovoltaics, geothermal, onshore, as well as offshore wind, fell by 14%, and hydropower by 12%.".
This shows us that renewable energy remains the cheapest alternative in terms of energy cost.
Isotopes are atoms of the same element that have different O principal chemical properties, masses. O numbers of protons, O numbers of electrons.
Answers
Answer:
Different atomic mass, number of neutrons
Explanation:
Isotopes refer to atoms of the same element, with same atomic number, number of protons & electrons. However, they have different atomic mass, because of different number of neutrons.
Find the mass of 2 moles of:
1. Oxygen atoms
2. Oxygen molecules
Answers
Answer: 1. 2 moles of oxygen atoms = 32 grams
2. 2 moles of oxygen molecules = 64 grams
Explanation:
According to avogadro's law, 1 mole of every substance weighs equal to its molecular mass and contains avogadro's number of particles.
1 mole of oxygen atom (O) weighs = 16 g
Thus 2 moles of oxygen atom (O) weighs = [tex]\frac{16}{1}\times 2=32 g[/tex]
Also 1 mole of oxygen molecule [tex](O_2)[/tex] weigh = 32 g
Thus 2 moles of oxygen molecule [tex](O_2)[/tex] = [tex]\frac{32}{1}\times 2=64 g[/tex]
What is a unwanted change in the environment caused by substances or from of energy??
Answers
Answer:
pollution I think
Explanation: