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vampirchik [111]
3 years ago
12

PLS HELP IT IS DUE TODAY IN 30 MINS PLS ANSWER 14 POINTS

Chemistry
2 answers:
Natali5045456 [20]3 years ago
6 0

Answer:

gamma rays, X-rays, ultraviolet radiation, visible light, infrared radiation, and radio waves.

Explanation:

hope that helps! (:

arlik [135]3 years ago
4 0
Radio waves, on the other hand, have the lowest energies, longest wavelengths, and lowest frequencies of any type of EM radiation. In order from highest to lowest energy, the sections of the EM spectrum are named: gamma rays, X-rays, ultraviolet radiation, visible light, infrared radiation, and radio waves
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Alecsey [184]

Answer: I think it's either ice melting into water in a warm day, or a corpse preserved at zero temp

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3 years ago
The nitrogen cycle is completed with the process of what ?
belka [17]

Answer:

nitrogen fixation

Explanation:

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3 0
3 years ago
Using the following equation for the combustion of octane, calculate the heat associated with the combustion of 100.0 g of octan
Sonja [21]

Answer: B) -4819 kJ

Explanation:

The balanced reaction for combustion of octane is:

2C_8H_{18}+25O_2\rightarrow 16CO_2+18H_2O  \Delta H^0_{rxn}=-11018kJ

To calculate the number of moles, we use the equation:

\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}}

given mass of octane = 100.0 g

Molar mass of octane = 114.33 g/mol

Putting in the values we get:

\text{Number of moles}=\frac{100.0g}{114.33g/mol}=0.8747moles

According to stoichiometry:

2 moles of octane give heat = -11018 kJ

Thus 0.8747 moles of octane give =\frac{-11018}{2}\times 0.8747=-4819kJ

Thus -4819 kJ of heat is released by 100.0 g of octane assuming complete combustion.

5 0
4 years ago
Read 2 more answers
A student dissolves a substance in water, tests the resulting solution, and observes that red litmus paper turns blue. based on
dlinn [17]

Answer:

The solution is a base

Explanation:

A basic solution changes red litmus paper to blue. This is one unique property of a base that differentiate them from All other compound

8 0
3 years ago
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The reacted side of a balanced chemical equation is shown below. C3H8 + 5O2 How many oxygen atoms should there be on the product
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10 atoms. If there are 10 in the reactants you need the same number in the products
5 0
3 years ago
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