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Gemiola [76]
3 years ago
11

What is formed from 2 pieces of different metals stuck together lengthwise?

Chemistry
1 answer:
avanturin [10]3 years ago
6 0
I believe you may be referring to cold welding? This is when two pieces of metal are put together in a vacuum and are thus permanently "cold-welded" together
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Small amount of acid is added to Water during electrolysis of water . Why?​
valentina_108 [34]

Answer:

Water doesn't have ions that are needed to pass the electricity so in order to increase the no of ions we poor acid into the water. Just increasing the no ions will increase the electricity flow faster

4 0
3 years ago
Which statement describes the moment magnitude scale?
KengaRu [80]
The moment magnitude scale is a scale that rates earthquakes by estimating the total energy released by an earthquake . Estimating the total amount of energy released, enables comparison of earthquakes more accurately.
This scale can be used to rate earthquakes of all sizes, near or far. The following statements describe the moment magnitude scale:
B. It collects data using a seismograph.
D. It estimates the total energy released from an earthquake.
E. It determines the amount of damage caused by an earthquake.
8 0
3 years ago
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Which of the following does not contain carbon?
seropon [69]
The option that does not contain carbon is ozone.
Diamond and graphite are made of carbon almost entirely, and alcohols are organic compounds so they do contain it.
Ozone has the chemical formula of O3, so you see there is no carbon involved.
7 0
3 years ago
Read 2 more answers
calculate the number of coulombs of positive charge in 250cm 3 of (neutral) water. (hint: a hydrogen atom contains one proton; a
Sidana [21]

Number of coulombs of positive charge in 250cm^3 water is 1.3×10^7 C

The volume of 250 cm^3 corresponds to a mass of 250 g since the density of water is 1.0 g/cm^3

This mass corresponds to 250/18 = 14 moles since the molar mass of water is 18. There are ten proton (each with charge q = +e) in each molecule of H_{2}O So,

Q = 14NA  q =14(6.02×10^23)(10)(1.60×10^−19C) = 1.3×10^7 C.

Mass is the quantity of matter in a physical body. It is also a measure of the body's inertia, the resistance to acceleration when a net force is applied. An object's mass also determines the strength of its gravitational attraction to other bodies.

Learn more about mass here:

brainly.com/question/17067547

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3 0
2 years ago
The picture represents the process that produces most of the energy used by living organisms on earth which process is represent
kkurt [141]
Nuclear fission because an atom is splitting in two fragments.
3 0
3 years ago
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