Ask question

Ask question

All categories

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

You might be interested in

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

SOVA2 [1]

Answer:

B.

Explanation:

Hope this helpssss

<33

8 0

2 years ago

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

yan [13]

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.

3 0

2 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

kari74 [83]

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.

$q=mc \Delta T$

The mass is 5 grams, the specific heat capacity is 0.14 Joules per gram degree Celsius. Let's find the change in temperature.

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

We know the variables and can substitute them into the formula.

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

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

Multiply the first numbers. The grams will cancel.

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

Multiply again. This time the degrees Celsius cancel.

$q= 56 \ J$

56 Joules of heat are needed.

4 0

2 years ago

Who was the scientist responsible for the theory of evolution by natural selection?

Allushta [10]

Answer:

Charles Darwin

Explanation:

Charles Darwin is more famous than his contemporary Alfred Russel Wallace who also developed the theory of evolution by natural selection. scientist who studies living organisms.J

8 0

3 years ago

Read 2 more answers

Which of the following is a part of the kinetic-molecular theory?

Dmitriy789 [7]

Answer:

2)The particles in a liquid are moving past one another constantly.

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:

5 0

2 years ago