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gtnhenbr [62]
3 years ago
11

Compare the elementy fluorine & chlorine with respect to their

Law
1 answer:
photoshop1234 [79]3 years ago
6 0

Answer:

only 5 brainly points what i cant even feed my kids with that cmon mann

Explanation:

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Yes it is right I do not agree
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What happens in collective bargining
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Collective bargaining is the process in which working people, through their unions, negotiate contracts with their employers to determine their terms of employment, including pay, benefits, hours, leave, job health and safety policies, ways to balance work and family, and more. Collective bargaining is a way to solve workplace problems.

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3 years ago
Mikhail S. Tswett (1872-1919) realized that ________ was an efficient method for separating compounds.
Elza [17]

Answer:

Chromatography

Explanation:

Mikhail Semyonovich Tswett was a Russian-Italian botanist born on the 14th of May, 1872 in Asti, Italy and died on the 26th of June, 1919 in Voronezh, Russia. He is famously known for his invention of the separation technique called chromatography.

Chromatography was developed in 1903 by the Russian-Italian botanist Mikhail Semyonovich Tswett using a column of calcium carbonate to colourfully separate plant pigments extracted through the use of ether and alcohol, this separation technique is generally referred to as adsorption chromatography.

Hence, Mikhail S. Tswett (1872-1919) realized that chromatography was an efficient method for separating compounds without prior knowledge of the quantities and nature of the chemicals present in a mixture.

Mixture can be defined as a combination of two or more substances which are present in varied proportion and can be visibly seen by with our naked eyes.

In Science, there are two (2) main types of mixture and these are;

I. A homogeneous mixture: it can be defined as any liquid, solid or gaseous mixture which has an identical or uniform composition and properties throughout any given sample of the mixture. In Chemistry, all solutions are considered to be a homogeneous mixture. For example, aqueous hydrogen chloride is a homogeneous mixture of water and hydrogen chloride.

This ultimately implies that, in a homogeneous mixture, parts are uniformly (evenly) distributed.

II. A heterogenous mixture: it can be defined as any mixture which has a different or non-uniform composition and properties throughout any given sample of the mixture. This ultimately implies that, the constituents of a heterogenous mixture always remain separate in the sample and as such comprises of two or more phases.

For example, a mixture of sand and coffee is simply a heterogenous mixture and can easily be separated into their various components.

7 0
3 years ago
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The first space zone is directly above the vehicle
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The picture shows the six zones around your vehicle. Straight ahead is the front zones, to the left is the left-front zone, and to the right is the right-front zone. Behind you is the rear zone, the left-rear zone, and the right-rear zone.

Explanation:

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In order to achieve takeoff, a passenger jet must start at rest and reach a speed of 80.5 meters per second (80.5 m/s) in 30 sec
nasty-shy [4]
It must be 161 in order to takeoff successfully.
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3 years ago
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