Chemistry, 25.04.2020 20:47 jackienassiri

Fill in the table below about energy sources?

Can someone plz help me

Fill in the table below about energy sources? Can someone plz help me

Answers: 2

Show answers

Answers

Answer from: gabbyypadron

Hewo!

Coal :-

Non-RenewableHigh Calorific ValueProduces smoke like CO2

Solar :-

RenewableEco-friendlyCan't be used in remote areas.

Wind :-

RenewableEffective way to provide us with electricityOnly be setup in those areas where wind blows 16km/h +

hope it helps!

Answer from: pr47723

Coal

Nonrenewable

Affordable/cheap

Contains a lot of CO2, burning it harms the environment and causes global warming

Solar

Renewable

Environmentally friendly

Weather dependent- energy collected during cloudy days is not as much as on sunny days

Wind

Renewable

Potential is 20 times what the human population needs

Threat to wildlife- birds may fly into the wings and die

Oil

Nonrenewable

Provides jobs

Emissions create acid rain

Hope this helps!

Answer from: Quest

the temperature of the gas, in k, not celsius.

Answer from: Quest

assuming that your periodic table has eighteen columns, you should highlight the four elements in the third column from the left of the table.

explanation

neutral atoms of elements after calcium contain d electrons. the energy of d orbitals of a particular main shell lies between the energy of the s and p orbitals of the next main shell. for example, electrons in the $3d$ have energy higher than those in the $4 s$ orbital while lower than those of the $4 p$ orbital.

by the aufbau principle, electrons fill orbitals one at a time, starting from those of the lowest energy. the $4s$ orbital is therefore filled right after $3p$ orbitals and before $3 d$ orbitals.

potassium has electron configuration $[\text{ar}] 4 s^{1}$ and calcium $[\text{ar}] 4 s^{2}$ . the s orbital of a main shell holds a maximum of two electrons. the next element would thus have the electron configuration $[\text{ar}] 4 s^{2} \; 3d^{1}$ and satisfy the requirements.

a neutral atom of the element contains three electrons on top of the most recent noble gas element. it should thus be placed in the third column of the periodic table. both scandium and yttrium would satisfy the conditions. an aufbau diagram indicates that the 4f orbital is filled before the 5d. however, it appears that exceptions exists for both lanthanum and actinium. neutral atoms of the two d-block elements also demonstrate the $ns^{2} \; (n-1) p^{1}$ and should be highlighted as well.

Another question on Chemistry

Chemistry, 21.06.2019 23:30

Calculate the expected ph values of the buffer systems from the experiments (a,b,c,d), using the henderson- hasselbalch equation, ph-pka+log[a-]/[ha]. use for pka values carbonic acid= 6.37, and acetic acid= 4.75.

Answers: 2

Answer

Chemistry, 22.06.2019 13:00

In salt water solution,the salt is the blank

Answers: 1

Answer

Chemistry, 22.06.2019 21:30

Under which circumstances are kp and kc equal for the reaction aa(g)+bb(g)⇌cc(g)+dd(g)?

Answers: 2

Answer

Chemistry, 23.06.2019 00:30

Maya wrote if you step to describe how carbon circulates between the atmosphere and living organisms