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pickupchik [31]
3 years ago
9

A battery is connected at its positive end by a wire to the head of an iron nail. The wire then coils aground the nail to its ti

p and from there to the negative end of the battery.
Predict what would happen to the strength of the electromagnet in each situation.
Using a battery with a higher voltage:
Wrapping the wire around the nail only three times:
Changing the direction of the current by reversing the battery connections:
Using a plastic stick in place of the iron nail:
Holding the nail vertically rather than horizontally: it
Chemistry
2 answers:
cupoosta [38]3 years ago
7 0

Answer:

sing a battery with a higher voltage:  

✔ stronger force of attraction

Wrapping the wire around the nail only three times:  

✔ weaker force of attraction

Changing the direction of the current by reversing the battery connections:  

✔ no change

Using a plastic stick in place of the iron nail:  

✔ weaker force of attraction

Holding the nail vertically rather than horizontally:  

✔ no change

Explanation: You're Welcome

puteri [66]3 years ago
7 0

Answer:

✔ stronger force of attraction

✔ weaker force of attraction

✔ no change

✔ weaker force of attraction

✔ no change

Explanation:

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3 years ago
Pleas help with 2 and 4 for brainliest
Snezhnost [94]

mass of pentane : = 30.303 g

moles of Al₂(CO₃)₃ : = 0.147

<h3>Further explanation</h3>

Given

1. Reaction

C₅H₁₂+8O₂→6H₂O+5CO₂.

45.3 g water

2. 2AlCl₃ + 3MgCO₃ → Al₂(CO₃)₃ + 3MgCl₂

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Required

mass of pentane

moles of Al₂(CO₃)₃

Solution

1. mol water = 45.3 : 18 g/mol = 2.52

From equation, mol ratio of C₅H₁₂ : H₂O = 1 : 6, so mol pentane :

= 1/6 x mol H₂O

= 1/6 x 2.52

= 0.42

Mass pentane :

= mol x MW

= 0.42 x 72.15 g/mol

= 30.303 g

2. mol MgCO₃ : 37.2 : 84,3139 g/mol = 0.44

mol Al₂(CO₃)₃ :

= 1/3 x mol MgCO₃

= 1/3 x 0.44

= 0.147

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3 years ago
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Answer:

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Image result for explain the term hybridization​

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Explanation:

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