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3 years ago

Distinguish between metal and non metal with example

2 answers:

6 0

Metal are good conductor of heat and non metal are poor conductor of heat. Metal are ductile in nature i.e in think wire while non metal are not ductile.

antiseptic1488 [7]3 years ago

5 0

Answer:

Explanation:

Metal is a material in the periodic table s much as iron or gold. A non metal is carbon in diamonds and graphite for pencil lead.

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Describe each of the following as a physical or chemical property.

lidiya [134]

Explanation:

Physical change -

It refers to any change during any process , where there is no new substance is formed , is referred to as a physical change.

Any change in the state of matter is characterised under physical change.

Chemical change -

It refers to any change in a chemical process , where there is formation of any new substance , is referred to as a chemical change .

From the options given in the question,

1. Apple turning brown , on air exposure , is an example of chemical change .

2. The physical state of mercury is liquid , is an example of physical change .

3. phosphorus burns on exposed to air , is an example of chemical change .

4. The gas Neon is colorless at the room temperature , is is an example of physical change .

7 0

3 years ago

Why aren't ALL farms hydroponic?

marusya05 [52]

Answer:

Because all farms cant afford it... im not sure if this is the answer your lookin for but if it aint lmk and ill delete my answer

Explanation:

8 0

3 years ago

0.350 mol of a solid was dissolved in 260 mL of water at 21.2 oC. After the solid had fully dissolved, the final temperature of

Fittoniya [83]

Answer: Heat of the solution = mass water × specific heat water × change in temperature

mass water = 260ml (1.00g/ml ) = 260g

specific heat of water = c(water) = 4.184J/ g°C

Heat change of water = final temperature - initial temperature

= 26.5 - 21.2

= 5.3 °C

H = 260 g ( 4.184J/g°C ) (5.3°C) = 5765J

Molar heat = $\frac{5765J}{0.350mol}$

= 16473J/mol

Explanation: finding molar heat requires first to look at specific heat of water and the change of water temperature

7 0

3 years ago

The acid dissociation constant for boric acid, h3bo3, is 5.8 x 10-10. calculate the dissociation constant, kb , of the hydrogen

Dmitriy789 [7]

The answer is 5.8x10^-10. I did the math and checked other sources as well.

6 0

4 years ago

Read 2 more answers

In your own words, describe how the energy of a pendulum is changed as it moves through one cycle of its motion. Pls help online

ruslelena [56]

In a perfect world without air resistance, the top of the swing would have the most potential energy, but the least amount of kinetic energy. As the pendulum falls down, it gains more kinetic energy as it travels faster due to gravitational acceleration but loses more potential energy as it loses height. The total amount of energy in the system (the sum of kinetic and potential energy) stays the same.

3 0

3 years ago