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scoray [572]
3 years ago
14

What are the very small particles that make up all matter?

Chemistry
1 answer:
zhenek [66]3 years ago
3 0
The correct answer would be: Atoms

I hope that this helps you!
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Eroded soil carried off by water, wind, glaciers, or gravity is called __.
ankoles [38]
A. Sediment

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3 years ago
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A catalyst decreases the activation energy of a particular exothermic reaction by 56 kJ/mol, to 35 kJ/mol. Assuming that the mec
-Dominant- [34]

Answer:

Activation energy for the uncatalyzed reverse reaction = 103 kJ/mol

Explanation:

Activation energy decreases from = 56 kj/mol to 35 kj/mol

products = 78 KJ lower in energy than reactants

Activation energy for the uncatalyzed reverse reaction = 103 kJ/mol

attached below are the sketches of approximate energy-level for both catalyzed and uncatalyzed reactions

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3 years ago
Phosphorus-32 has a half-life of 14.0 days. Starting with 6.00 g of 32P, how many grams will remain after 42.0 days ?
aleksandrvk [35]
6g...........3g..........1,5g........0,75g
0d..........14d.........28d.........42d

After 42 days 0,75g of Phoshorus-32 will remain.
4 0
3 years ago
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Calculate the frequency required to eject electrons from gold with a work function of 8.76 x 10-19 J
Savatey [412]
hf=W+\frac{mv^{2}}{2}\\\\
f=\frac{W+\frac{mv^{2}}{2}}{h}\\\\\

W=8,76*10^{-19}J\\
m=9,11*10^{-31}kg\\
v=3*10^{8}\frac{m}{s}\\
h=6,63*10^{-34}Js\\\\\\
f=\frac{8,76*10^{-19}J+\frac{9,11*10^{-31}kg*(3*10^{8}\frac{m}{s})^{2}}{2}}{6,63*10^{-34}Js}=7,5*10^{19}Hz
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3 years ago
What are some chemical properties of noble gasses
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Https://www.thoughtco.com/noble-gases-properties-and-list-of-elements-606656
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