Mars is 139.58 million miles away from the sun. mars is red because its soil has iron oxide (rust particles) in it.
Answer:
A & D
Explanation:
A single-displacement reaction is a chemical reaction whereby one element is substituted for another one in a compound and thereby generating a new element and also a new compound as products.
From the options, only options A & D fits this definition of single-displacement reactions.
For option D: Both left and hand and right hand sides each have one element and one compound. We can see that K is substituted from KBr to join Cl to form KCl and Br2 on the right hand side.
For option A: Both left and hand and right hand sides each have one element and one compound. We can see that OH is substituted from 2H2O to join Mg to form Mg(OH)2 and H2 on the right hand side.
The other options are not correct because they don't involve only and element and a compound on each side of the reaction.
The ratio of output force to the input force is generally the mechanical advantage of the machine.
Answer:
splashing
Explanation:
if you put in the cereal after the milk it will splash everywhere, causing a waste of milk, and a loss of time.
I’m not sure I think it’s A
