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3 years ago

9

A new substance is usually formed when two or more substances combine and form new protons. chemical bonds. physical shapes. ele

ctrons.

1 answer:

vovangra [49]3 years ago

5 0

Chemical bonds.
protons and electrons can't combine

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A stock solution containing Mn2 ions was prepared by dissolving 1.269 g pure manganese metal in nitric acid and diluting to a fi

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Answer:

B.

Explanation:

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2 years ago

Is iced tea with no ice a homogenuous or a heterogenuous mixture? ...?

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It is a homogeneous mixture because you cannot see the individual components that make up the iced tea (such as the water, the molecules found in the tea leaves, etc.). Iced tea with ice in it is considered a heterogeneous mixture because you can distinguish the tea from the ice.

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3 years ago

Calculate: A. Mercury has a specific Heat Capacity of 0.14 J/goC. How much heat is needed to raise the thermometer temperature 1

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Answer:

$\boxed {\boxed {\sf 56 \ Joules}}$

Explanation:

We are given the mass, specific heat, and temperature, so we must use this formula for heat energy.

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ΔT= final temperature - initial temperature
ΔT= 95°C - 15°C = 80°C

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$m= 5 \ g \\c= 0.14 \ J/ g \ \textdegree C \\\Delta T= 80 \ \textdegree C$

$q= (5 \ g )( 0.14 \ J/ g \ \textdegree C ) ( 80 \ \textdegree C)$

Multiply the first numbers. The grams will cancel.

$q= 0.7 \ J/ \textdegree C(80 \ \textdegree C )$

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56 Joules of heat are needed.

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2 years ago

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Answer:

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3 years ago

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Dmitriy789 [7]

Answer:

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3)The particles in gas move freely in all directions.

4)The particles in a solid vibrate in a fixed position.

6)The particles in a gas have few attractions between them.

7)The particles in all states of matter are always moving.

Explanation:

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2 years ago