Answer:
x=-1
Step-by-step explanation:
4x+7=2x+5
subtract 2x on both sides
4x-2x+7=5
4x-2x=2x
2x+7=5
subtract 7 on both sides
2x=-2
divide both sides by 2
x=-1
hope this helps
The coefficients in the balanced reaction
<u>4</u> Fe + <u>3</u> O₂ → <u>2</u> Fe₂O₃
represent the ratio of moles of each reactant to each product. That is, for every 4 moles of Fe and 3 moles of O₂, 2 moles of Fe₂O₃ are produced.
First convert the given amount of Fe into moles. Fe has a molar mass of 55.845 g/mol, so you have
42.7 g × (1/55.845 mol/g) = 0.765 mol
of Fe.
Find how many moles of Fe₂O₃ are produced given this much Fe and an abundant supply of O₂. Multiply the coefficients of the balanced reaction by 0.765/4 :
<u>0.765</u> Fe + <u>0.573</u> O₂ → <u>0.382</u> Fe₂O₃
Now convert the amount of Fe₂O₃ to grams. O has a molar mass of 15.999 g/mol, so Fe₂O₃ has a total molar mass of about
2 (55.845 g/mol) + 3 (15.999 g/mol) = 159.687 g/mol
Then the reaction would produce about
0.382 mol × (158.687 g/mol) ≈ 61.0 g
of Fe₂O₃.
Answer: it is 85 degrees
Step-by-step explanation:
Answer:
fist you would do 24 divided by 3/4
which is 32
to make sure its correct you could times 32 by 3/4
Answer:
1. 1/6
2. 4/6 (There are 4 factors of 6, 1, 2, 3 and 6)
3. Therefore, the game in not fair as the friend are quadruple the chance of winning the game compared to you. You can only land on 1 number to win, your friend can land on 4 numbers to win.
Hope this helps :)
