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mariarad [96]
3 years ago
14

Who did Churchill and Roosevelt appoint to lead the Normandy invasion?

Chemistry
2 answers:
Anna71 [15]3 years ago
5 0
First this aint chemistry second it's DWIGHT D. EISENHOWER
i gotchu
aivan3 [116]3 years ago
4 0
Churchill and Roosevelt appointed Dwight d. Eisenhower to lead the Normandy invasion.

Final Answer: Dwight d. Eisenhower
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How many moles of ethyl alcohol, C2H6O, are in a 18.0 g sample?
Arte-miy333 [17]
To find moles in this sample, you would divide grams by molar mass of ethyl alcohol
(18.0g)/(46.07g/mol) = 0.391mol C2H6O
4 0
3 years ago
In an isolated system, mass can neither be<br> created or destroyed.<br> ube<br> FALSE<br> TRUE
Marina86 [1]

Answer:

True

Explanation:

The law of conservation of mass states that mass in an isolated system is neither created nor destroyed by chemical reactions or physical transformations. According to the law of conservation of mass, the mass of the products in a chemical reaction must equal the mass of the reactants.

Hope it helps

5 0
3 years ago
60 POINTS! PLEASE ANSWER!
Mumz [18]
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6 0
2 years ago
Ethane, C2H6, burns in oxygen. First write a balanced equation for this combustion reaction. What mass of oxygen, in grams, is r
iren [92.7K]

Answer:

We need 50.6 grams of oxygen

Explanation:

Step 1: Data given

Mass of ethane = 13.6 grams

Molar mass of ethane = 30.07 g/mol

Step 2: The balanced equation

2C2H6 + 7O2 → 4CO2 + 6H2O

Step 3: Calculate moles ethane

Moles ethane = mass ethane / molar mass ethane

Moles ethane = 13.6 grams / 30.07 g/mol

Moles ethane = 0.452 moles

Step 4: Calculate moles oxygen

For 2 moles ethane we need 7 moles O2 to produce 4 moles CO2 and 6 moles H2O

For 0.452 moles ethane we need 3.5*0.452 = 1.582 moles O2

Step 5: Calculate mass O2

Mass O2 = moles O2 * molar mass O2

Mass O2 = 1.582 moles * 32.0 g/mol

Mass O2 =  50.6 grams

We need 50.6 grams of oxygen

7 0
3 years ago
How to identify polars&amp;non polar.
lesantik [10]
If the difference in electronegativtiy for the atoms in a bond are greater than 0.4,we consider the bond polar, if the electronegativity is less than 0.4, we consider it non polar. if there are no polar bonds, the molecule is non polar.
7 0
3 years ago
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