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baherus [9]
2 years ago
11

Differentiate between elements and mixtures

Chemistry
2 answers:
viktelen [127]2 years ago
4 0

Answer:

Explanation:

<h2>Mixtures:</h2>

1- are made up of two or more kinds of Compounds .

2-Mixtures has no definite properties

3-The various constituents are seperated by simple physical means.

4-Examples: Sand, oil and water  mixture of iron fillings and sulfur

<h2>ELEMENTS;</h2>

1-Elements are made up of one kind of atoms.  (It is the basic unit of matter, which cannot be broken down into substances by any way but can be combined to form new substances. )                      

2-Elements have their own set of properties.

3-Elements cannot be broken down into simpler substances by any physical or chemical method.

4-Examples: Hydrogen, Oxygen

<h2> </h2><h2> </h2><h2 />
Ksenya-84 [330]2 years ago
3 0

Answer:

ELEMENTS MIXTURE

Elements are made up of one kind of atoms. Mixtures are made up of two or more kinds of Compounds .

Elements cannot be broken down into simpler substances by any physical or chemical method. The various constituents are seperated by simple physical means

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Aleonysh [2.5K]

5 examples of gases found in the normal home environment include; oxygen (air), nitrogen (most abundant element found in the air), carbon (air), a slight trace of argon and finally, hydrogen. these are- Nitrogen, oxygen, carbondioxide, carbonmonoxide and SO2.                   


4 0
3 years ago
Read 2 more answers
21. an atom has 216 protons, how many electrons does it have?
yanalaym [24]

Answer:

21: 47 22: 14

Explanation:

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2 years ago
Given that a for HCN is 6. 2×10^−10 at 25 °C. What is the value of b for cn− at 25 °C?
Kay [80]

If Ka for HCN is 6. 2×10^−10 at 25 °C, then the value of Kb for cn− at 25 °C is 1.6 × 10^(-5).

<h3>What is base dissociation constant? </h3><h3 />

The base dissociation constant (Kb) is defined as the measurement of the ions which base can dissociate or dissolve in the aqueous solution. The greater the value of base dissociation constant greater will be its basicity an strength.

The dissociation reaction of hydrogen cyanide can be given as

HCN --- (H+) + (CN-)

Given,

The value of Ka for HCN is 6.2× 10^(-10)

The correlation between base dissociation constant and acid dissociation constant is

Kw = Ka × Kb

Kw = 10^(-14)

Substituting values of Ka and Kw,

Kb = 10^(-14) /{6.2×10^(-10) }

= 1.6× 10^(-5)

Thus, the value of base dissociation constant at 25°C is 1.6 × 10^(-5).

learn more about base dissociation constant :

brainly.com/question/9234362

#SPJ4

4 0
2 years ago
What is a possible cause of a large percentage of error in an experiment where mgo is produced from the combustion of magnesium?
PilotLPTM [1.2K]

A possible cause of a large percentage of error in an experiment where MgO is produced from the combustion of magnesium would be not all of the Mg has completely reacted. <span>

I hope this helps and if you have any further questions, please don’t hesitate to ask again. </span>

4 0
2 years ago
Read 2 more answers
what temperature change will be observed if a sample of 100 g of ethylene glycol antifreeze solution (specific heat capacity = 3
ivolga24 [154]

Answer:

1°C temperature change will be observed if a sample of 100 g of ethylene glycol antifreeze solution.

Explanation:

Mass of ethylene glycol = m = 100 g

Specific heat capacity of ethylene glycol = c = 3.5 J/g°C

Change in temperature of ethylene glycol = ΔT

Heat loss by the ethylene glycol = Q = 350 J

Q=mc\Delta T

\Delta T=\frac{Q}{mc}=\frac{350 J}{100 g\times 3.5 J/g^oC}

ΔT = 1°C

1°C temperature change will be observed if a sample of 100 g of ethylene glycol antifreeze solution.

3 0
3 years ago
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