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3 years ago

When Johann Schweigger invented the first galvanometer, what did he recognize could be used to measure current:"

1 answer:

6 0

He improved and followed from the works of Luigi Galvani, which used a 'frog galvanoscope' as a prototype of measuring current. He recognized that a compass could actually measure current, given that it is placed near coil of wire.

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You have a 5-liter container with 1.30×10^24 molecules of ammonia gas (NH3) at STP.

givi [52]

Answer:answer is C

Explanation:

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3 years ago

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Balancing Chemical Equation<br> Na+Br2=NaBr

solniwko [45]

Answer:

2Na + Br2 = 2NaBr

Explanation:

In order to balance a chemical equation you make the make sure both sides have the same number of atoms on each side, you do this by multiplying on both sides as if it was a algebraic equation.

Na+ Br2 = NaBr

Na × 2 = Na2

Br × 2 = Br2

2Na + Br2 = 2NaBr

Hope this helps.

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3 years ago

What kind of questions can science answer

IrinaK [193]

Answer:

hypothesis

Explanation:

a question that can be answered wity a hypothesis is a question a scientist can answer

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3 years ago

a = Proton transfer d = SN2 Nucleophilic substitution g = Nucleophilic subs at carbonyl(acyl Xfer) b = Lewis acid/base e= Electr

marissa [1.9K]

Complete Question

The complete question is shown on the first uploaded image

Answer:

The solution to this question is shown on the second uploaded image

Explanation:

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3 years ago

Which statement best describes a physical change?

natta225 [31]

Explanation:

A physical change is one which can be reversed.it also does not produce any new substance.

changes in state such as the melting of a solid, the freezing and vaporization of a liquid as well as changes In shape are examples of physical changes

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2 years ago