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FromTheMoon [43]
3 years ago
10

Adding copper or magnesium to aluminum creates an alloy that is _____.

Chemistry
1 answer:
cestrela7 [59]3 years ago
4 0
Duralumin. it mixed from copper and magnesium or aluminium. it use for flight
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When water freezes into ice, sme of the properties have changed <br> What stays the same
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When water freezes into ice, some of the properties have change. What stays the same.




Answer: 1: Ice Melting is a physical change. When liquid water (H2O) freezes into a solid state (ice), it appears changed; However, this change is only physical as the the composition of the constituent molecules is the same: 11.19% hydrogen and 88.81% oxygen by mass.


Have a goood day!
5 0
3 years ago
A student is standing with their back facing a campfire. The student notices that their back is much warmer than their chest. Th
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Answer:Conduction occurs when energy is passed between objects. The transfer of thermal energy is called heat. Particles of matter are in constant motion.

Explanation:

3 0
2 years ago
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A when sulfuric acid is added to sirie, hydrager
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Sulfuric acid is prepared industrially by means of the response of water with sulfur trioxide which in turn is made by way of a chemical combination of sulfur dioxide and oxygen both by way of the touch system or the chamber system.

                         H2SO4 (l) H2O (g) + SO3 (g).

The reaction is highly exothermic as an enormous amount of heat is liberated.

The usual approach is to dilute the sulfur trioxide in sulphuric acid. This produces oleum. SO3 (g) + H2SO4 → H2S2O7 (1) Oleum can be in addition diluted in water to acquire concentrated sulphuric acid.

An acid catalyst is added to protonate the carbonyl carbon. How does this catalyze the response, robust acid catalysts catalyze the hydrolysis and transesterification of esters which enables the mechanism with a view to boom the electrophilicity of the carbonyl carbon to assist protonate the carbonyl oxygen.

Learn more about sulfuric acid here:-brainly.com/question/11857977

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8 0
1 year ago
The human eye is a complex sensing device for visible light. The optic nerve needs a minimum of 2.0 × 10−17 J of energy to trigg
AveGali [126]
Number of photons can be calculated by dividing the needed energy by the energy per photon.

The minimum energy needed is given as 2 x 10^-17 joules
Energy per photon = hc / lambda where h is planck's constant, c is the speed of light and lambda is the wavelength
Energy per photon = (<span>6.626 x 10^-34 x 3 x 10^8) / (475 x 10^-9)
                              = 4.18 x 10^-19 J

number of photons = (2 x 10^-17) / (4.18 x 10^-19)
                               = 47.79 photons which is approximately 48 photons</span>
7 0
3 years ago
Burning wood in a fireplace is an example of what kind of energy conversion?
S_A_V [24]

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A. because the wood is stored chemical energy and it is converting into heat energy

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