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kupik [55]
3 years ago
12

Discuss the different observations that you would record during an investigation into the energy transformations of a lamp that

uses electrical energy
Chemistry
1 answer:
densk [106]3 years ago
4 0

Discuss the different observations that you would record during an investigation into the energy transformations of a lamp that uses electrical energy.

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How many moles of hydrogen are there, if there are 4 molecules of hydrogen?
Scorpion4ik [409]

Answer:

Explanation:

In this case, according to the Periodic table

there is 1g of hydrogen per mole. As we know that dihydrogen (H2) has two hydrogen atoms per molecule. So,there will be 2*1g hydrogen per mole=2g dihydrogen per mole.

If there is 2g dihydrogen per mole,and we have 4g,then we know that there is 2 mole dihydrogen in 4g.And for hydrogen there is 4 moles in 4g of hydrogen

5 0
3 years ago
Heart, 5 stars, and Brainiest to first right answer!
erastovalidia [21]

hi have a nice day

will be less than 26 °C as water has a relatively higher specific heat than sand.

Explanation:

The specific heat of a substance is the amount of heat energy absorbed by one unit of mass of the substance when its temperature increases one unit.

From that, you can derive the equation for the specific heat of a substance:

specific heat = heat / (mass × ΔT)

Thus, assuming that all the heat provided by the lamp to both samples is the same and, as given, the amount (mass) of both samples is also the same, you have that the specific heat of the samples will be:

specific heat = constant / ΔT

So, specific heat and ΔT are inversely related.

It is known that water has a higher specific heat than sand (that is why the sand on the shore of a beach is, during the day, hotter than the water and your feet get burned when you walk on a sandy beach on a sunny day

8 0
2 years ago
It might be to long but please help. I did search but couldn't find answer
Inessa05 [86]
The events that occur is based on the type of hormone being released. Like puberty. It's an event coming from different types of hormones being sent to a tissue
7 0
3 years ago
Foxplain the term hybridizatim​
serg [7]

Answer:

Showing results for explain the term hybridization​

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In chemistry, orbital hybridisation (or hybridization) is the concept of mixing atomic orbitals into new hybrid orbitals (with different energies, shapes, etc., than the component atomic orbitals) suitable for the pairing of electrons to form chemical bonds in valence bond theory.

Explanation:

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3 years ago
Which of the following processes involves only physical change? A. decay B. sublimation C. digestion D. combustion
grigory [225]
B. Sublimation
Sublimation is the change of a liquid from the liquid state to the gas state. That’s why it’s only involves a physical change. Also, you can go back to the liquid stage.
5 0
3 years ago
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