Answer:
false, Potassium and fluorine are not halogens.
only fluorine here is halogen.
potassium is an alkali earth metal it doesn't comes under category of halogens, but fluorine
is a non metal which comes under halogen family.
Answer:
A compound contains atoms of different elements chemically combined together in a fixed ratio. An element is a pure chemical substance made of same type of atom.
Answer:
C = K - 273.15
Explanation:
A kelvin is the same size as a Celsius degree.
Absolute zero is 0 K and the freezing point of water is 273.15 K.
To get the freezing point of water to be 0 °C, we must subtract 273.15 from the Kelvin reading (see Figure).
C = K – 273.15
C = 273.15 – 273.15
C = 0 °C
To get absolute zero on the Celsius scale, we repeat the process.
C = 0 – 273.15
C = –273.15 °C
According to the research, a hazard is <u>the </u><u>real possibility</u><u> that we will suffer some </u><u>harm</u>. An example of a hazard is <u>free </u><u>toxic gases</u>.
<h3>What is a hazard?</h3>
It is associated with situations that have potentially harmful effects on the body, the environment or property.
In chemistry, it is understood as those conditions of potential health damage caused by uncontrolled exposure to chemical agents of various kinds, such as the release of toxic and flammable gases such as ethanol.
Therefore, we can conclude that according to the research, a hazard is <u>the </u><u>real possibility</u><u> that we will suffer some </u><u>harm</u>. An example of a hazard is <u>free </u><u>toxic gases</u>.
Learn more about a hazard here: brainly.com/question/13340017
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Answer: B
Explanation: The mitochondria are vacuoles and ribosomes are in both plant and animal cell