Answer:
Jonathan’s claim is right.
Explanation:
Jonathan’s claim is right because photons emitted by both sources i.e. sun and the light bulb has the same wavelength which looks practically identical to each other. But some differences in the light spectrum of sun and a light bulb i. e. light bulb has more infrared output than visible and ultraviolet while on the other hand, sun has more visible light than infrared and ultraviolet radiations so we can say that Jonathan's claim is right about the emission of light.
I'm pretty sure it's A because its just sand and everything else is mixed with something Hope that helped Have a good day! :-)
There are both natural and human sources of carbon dioxide emissions. Natural sources include decomposition, ocean release and respiration. Human sources come from activities like cement production, deforestation as well as the burning of fossil fuels like coal, oil and natural gas.
Answer: 2Na+2H2O------>2NaOH+H2
b) From the equation two moles of sodium gave one mole of hydrogen.
At stp the volume of hydrogen is 22400cm3.
The molar mass of sodium is 23
So we have
2molesNa--->1moleH2
5.76moles--->? mole H2
Meaning
2(23)Na----> 22400cm3 ofH2
5.67Na---->?H2
22400×5.67÷ 2(23)
127008÷46=2761.04cm3
Sorry I can't do the last one.