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4 years ago

Properties of calcium

Chemistry

2 answers:

MariettaO [177]4 years ago

5 0

Hey there!

Your PHYSICAL properties of calcium is/are....

- COLOR which gives you a silvery whitish metallic color

- PHASE which is pretty much solid

- HARDNESS which is quite soft metal

- CRYSTALLINE STRUCTURES which is like a cubic symbol

- DUCTILITY which can be misused into millions of thin specs

- MALLEABILITY which forms the shape or vent

- MELTING POINT which is estimated to about 850 degree Celsius

- BOILING POINT which is estimated to 1,480 degree Celsius

The CHEMICAL properties of calcium is/are...

• CHEMICAL CODE

• OXIDATION which is used for the steel

• ISOTOPES calcium has about 6 of them

• COMPOUNDS includes marble and limestone (there’s more)

• FLAMMABILITY when it is burned into the air or in the oxygen it will most likely catch on fire

• REACTION TO WATER (H2O) it responds to the water fast in the beginning but slowly the reaction slows down due to the feeling of your calcium

• REACTION TO ACIDS it is exceedingly reactive

Good luck on your assignment and enjoy your day!

~LoveYourselfFirst:)

Anuta_ua [19.1K]4 years ago

5 0

Answer:

Physical Properties

Color

Phase

Hardness

Crystalline structure

Ductility

Malleability

Melting point

Boiling point

Chemical Properties

Chemical Formula Ca

Oxidation

Isotopes Six

Compounds

Flammability

Reactivity with water

Reactivity with acids

Hope this helps you again!

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1. Energy as particles can't move without kinetic (movement) energy
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4 years ago

The bowl of fruit has a mass of 2.2 kg.

AURORKA [14]

Taking into account the Newton's second law, the correct answer is option A. F = 9.68 N right

In first place, acceleration in a body occurs when a force acts on a body.

Newton's second law states that a force will change the speed of an object because the speed and/or direction will change. These changes in velocity are called acceleration.

So, Newton's second law defines the relationship between force and acceleration mathematically. This law says that the acceleration of an object is directly proportional to the sum of all the forces acting on it and inversely proportional to the mass of the object

Mathematically, Newton's second law is expressed as:

F= m×a

where:

F = Force [N]
m = Mass [kg]
a = Acceleration [m/s²]

In this case, you know:

F= ?
m= 2.2 kg
a= 4.4 m/s²

Replacing in Newton's second law:

F= 2.2 kg× 4.4 m/s²

Solving:

F= 9.68 N

Finally, As the bowl of fruit accelerates to the right, the correct answer is option A. F = 9.68 N right

Learn more about the Newton's second law:

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2 years ago

Gallium (atomic number 31) is in group 13 (IIIA). In addition to the s type electrons, it will have how many electrons in the 4p

qwelly [4]

Answer:

One electron is present in 4p energy sublevel.

Explanation:

Gallium element has symbol Ga with atomic number 31.

It is placed in group 13 and fourth period in the modern periodic table.

The electronic configuration of the element, gallium is -

$1s^22s^22p^63s^23p^63d^{10}4s^24p^1$

As seen, from the configuration,

One electron is present in 4p energy sublevel.

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3 years ago

A crime lab received a 235-gram sample. The sample had a molecular mass of 128.1 grams and the empirical formula is CH2O. How ma

kvv77 [185]

Explanation:

Given parameters:

Mass of sample = 235g

Molecular mass of sample = 128.1g

Empirical formula = CH₂O

Unknown:

Mass of each element in the sample = ?

Solution:

To solve this problem, we must know that the empirical formula of any compound is the simplest ratio of the atoms it contains. This is not the true formula of the compound.

Molecular formula = (Empirical formula)ₙ

Let us find the molecular mass of the sample;

CH₂O = 12 + 2(1) + 16 = 30g

128.1 = (30)n

n = 4

The molecular formula of the compound is; (CH₂O)₄ = C₄H₈O₄

Now to find the grams of each element in the sample;

Express the molecular mass of each element and that of the compound as a fraction and multiply with the given mass;

For C;

$\frac{4 x 12}{128.1} x 235\\$ = 88.06g

H; $\frac{8 x 1}{128.1} x 235$ = 14.68g

O: $\frac{4 x 16}{128.1} x 235$ = 117.41g

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3 years ago

Which of the following is true regarding a voltaic (or galvanic) cell? a) It can only be used with hydrogen. b) It produces elec

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Answer:

b) It produces electrical current spontaneously.

Explanation:

Cells capable of converting chemical energy to electrical energy and vice versa are termed Electrochemical cells. There are two types of electrochemical cells viz: Galvanic or Voltaic cells and Electrolytic cells. Voltaic cell is an elctrochemical cell capable of generating electrical energy from the chemical reaction occuring in it.

The voltaic cell uses spontaneous reduction-oxidation (redox) reactions to generate ions in a half cell that causes electric currents to flow. An half cell is a part of the galvanic cell where either oxidation or reduction reaction is taking place. Hence, the spontaneous production of electric currents is true about Voltaic/Galvanic cells.

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3 years ago

Properties of calcium​

Properties of calcium