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Ksju [112]
3 years ago
5

Two chemicals switch places is called

Chemistry
2 answers:
alekssr [168]3 years ago
6 0

Answer:

I'm guessing it's A.

Explanation:

masha68 [24]3 years ago
3 0

Answer:

A. double replacement

Explanation:

Double replacement occurs when two anions switch places during a chemical reaction.

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Now they feel it is best to have you identify an unknown gas based on its properties. Suppose 0.508 g of a gas occupies a volume
pishuonlain [190]

Answer: Option (b) is the correct answer.

Explanation:

The given data is as follows.

             mass = 0.508 g,               Volume = 0.175 L

             Temperature = (25 + 273) K = 298 K,       P = 1 atm

As per the ideal gas law, PV = nRT.

where,  n = no. of moles = \frac{mass}{\text{molar mass}}

Hence, putting all the given values into the ideal gas equation as follows.

               PV = \frac{mass}{\text{molar mass}} \times RT            

           1 atm \times 0.175 L = \frac{0.508 g}{\text{molar mass}} \times 0.0821 L atm/ K mol \times 298 K  

                            = 71.02 g

As the molar mass of a chlorine atom is 35.4 g/mol and it exists as a gas. So, molar mass of Cl_{2} is 70.8 g/mol or 71 g/mol (approx).

Thus, we can conclude that the gas is most likely chlorine.

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3 years ago
According to the law of conservation of matter, which statement about chemical reactions is true?
Yanka [14]

Atoms cannot be created or destroyed by chemical reactions. They just have a some bonds rearranged is all.


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2 years ago
Making models involves creating representations of complex objects or processes to help people study and understand things that
swat32
Somewhat false
observations can be made of a model of the statue of liberty, say, or in real line
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2 years ago
Which is the best example of a new substance forming?
Hunter-Best [27]

Answer:

lighting a match is the answer.

8 0
3 years ago
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CAN SOMEONE REWRITE/SHORTEN THIS FOR ME PLEASE? I'LL GIVE BRAINLIEST
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Answer:

Here you go! 50% of your writing piece

Explanation:

Foods produced from or using GM organisms are often referred to as GM foods.

GM foods are developed and marketed because there is some advantage either to the producer or consumer of these GM foods. GM seed developers wanted their products to be accepted by producers and have concentrated on innovations that bring direct benefit to farmers and generally the food industry.

One objective for developing plants based on GM organisms is to improve crop protection. The GM crops currently on the market are mainly aimed at an increased level of crop protection through the introduction of resistance against plant diseases caused by insects or viruses or through increased tolerance towards herbicides.

Resistance against insects is achieved by incorporating into the food plant the gene for toxin production from the bacterium Bacillus thuringiensis. GM crops that inherently produce this toxin have been shown to require lower quantities of insecticides in specific situations, where pest pressure is high.

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