Give the number of significant figures indicated. 6.695

Chemistry

1 answer:

iris [78.8K]3 years ago

8 0

Answer:

There are 4 significant figures

Explanation:

Any number that isn’t 0 is significant. Example:765.Any number even if it’s 0 is significant if it’s after the decimal.example:5.00. I believe if the 0 is at the beginning of the number it’s significant aswell.example:086. 0 isn’t significant if it’s in the middle like this: 306

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Heat is transferred in there ways wat and wat ???

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Answer:

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Explanation:

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A piece of copper alloy with a mass of 85.0 g is heated from 30. °C to 45 °C. In the process, it absorbs 523 J of energy as heat

Ne4ueva [31]

Answer:

410.196 J/[kg*°C].

Explanation:

1) the equation of the energy is: E=c*m*(t₂-t₁), where E - energy (523 J), c - unknown specific heat of copper, m - mass of this copper [kg], t₂ - the final temperature, t₁ - initial temerature;

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