Answer:
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Answer:
If you put friction in to skating rink then obvioulsy the skaters wont be able to glide and skate.
Explanation:
friction is power that disturbes the moving power. places like skating rink and slides try to have the least amount of friction.
Answer:
The reactants are MgF₂ and Be.
This is a single displacement reaction.
Explanation:
Chemical reactions are written like this:
reactant + reactant => product + product
There may be more or less reactants and products on each side, separated by + the plus sign. The reactants are on the left and the products are on the right.
In the equation BeF₂ + Mg => MgF₂ + Be, <u>the products (on the right side) are MgF₂ and Be</u>.
Since the total reactants are equal to the total products, every element that you see on the left must also appear on the right. On the left, the question gave you the elements "Be", "F" and "Mg". On the right, "Be" was missing, so it must be the missing product.
This is a <u>single displacement reaction</u> because one element that was in a pair was replaced by another.
All single displacement reactions look like this:
AB + C = AC + B An element that was paired up switched places with another element that was not paired up.
In this reaction, "Be" was displaced. It started the reaction paired up with "F", but it was replaced by "Mg".
About 100,000 light years
<u>Answer:</u> The mass of carbon dioxide formed in the reaction is 269 grams.
<u>Explanation:</u>
Law of conservation of mass states that mass can neither be created nor be destroyed but it can only be transformed from one form to another form.
This also means that total mass on the reactant side must be equal to the total mass on the product side.
The chemical equation for the decomposition of calcium carbonate follows:
Let the mass of carbon dioxide be 'x' grams
We are given:
Mass of calcium carbonate = 612 grams
Mass of CaO = 343 grams
Total mass on reactant side = 612 g
Total mass on product side = [343 + x] g
So, by applying law of conservation of mass, we get:
Hence, the mass of carbon dioxide formed in the reaction is 269 grams.
