Answer:
Double replacement is the answer
Evaporation can decrease the amount of water. Dust from the surroundings can enter the water. The water can freeze if the surrounding temperature decreases sufficiently.
The bond angle marked as ‘a’ in the molecule above is about: D. 120 degrees. That means the angle between the atoms forms a trigonal planar shape.
<h3>What is the bond angle?</h3>
The bond angle is an angle between two bonds that measures in degrees and is calculated by using the spectroscopic method. The bond angle depends on the bonds and the number of lone pairs an atom has.
The molecule above contains 3 electron charge clouds around them: a single bond to carbon, a single bond to oxygen, and a double bond to the other oxygen. Hence, the O-C=O bond angle from the molecule above is 120 degrees.
Learn more about bond angle here brainly.com/question/29235720
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Answer:
THE hard-water effect is a recognized source of error in radiocarbon dating. It causes ages to be over-assessed and arises when the material to be dated, such as mollusc shell or plant, synthesizes its skeleton under water and so uses bicarbonate derived in part from old, inert sources.
https://www.nature.com/articles/240460a0#:~:text=THE%20hard%2Dwater%20effect%20is,part%20from%20old%2C%20inert%20sources.
Answer:
alot
Explanation:
because salt contains stuff