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Aleksandr-060686 [28]
3 years ago
5

In Chef’s famous Beef Wellington, you have to get the pastry just right. According to the recipe, Chef uses 400g of butter. But

Chefs Jacqueline and Amy use ounces and pounds— how much butter should they use?
A)Chef Jacqueline should use ________ oz of butter.


B) Chef Amy should use _________ pounds of butter.
Chemistry
1 answer:
lisabon 2012 [21]3 years ago
5 0

Amount of butter Chef used = 400g

1 g = 0.035274 oz

Therefore, 400 g = 0.035274 x 400 oz = 14.1096 oz

A) Chef Jacqueline should use __14.1096______ oz of butter.

1 g = 0.00220462 pound

Therefore, 400 g =  0.00220462 x 400 pound = 0.881848 pound

B) Chef Amy should use _0.881848________ pounds of butter.

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Answer:

The mass of oxygen is 12.10 g.

Explanation:

The decomposition reaction of potassium chlorate is the following:

2KClO₃(s) → 2KCl(s) + 3O₂(g)

We need to find the number of moles of KClO₃:

\eta_{KClO_{3}} = \frac{m}{M}

Where:

m: is the mass = 30.86 g

M: is the molar mass = 122.55 g/mol

\eta_{KClO_{3}} = \frac{30.86 g}{122.55 g/mol} = 0.252 moles                                      

Now, we can find the number of moles of O₂ knowing that the ratio between KClO₃ and O₂ is 2:3

\eta_{O_{2}} = \frac{3}{2}*0.252 moles = 0.378 moles

Finally, the mass of O₂ is:

m = 0.378 moles*32 g/mol = 12.10 g

Therefore, the mass of oxygen is 12.10 g.

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6 0
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Imagine that small pieces of the metals copper, magnesium and iron are placed in three test tubes labeled A, B, and C, respectiv
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A) Cu

Cu + 2HCl --> CuCl2 + H2(g)

Products predicted: Copper(II) choloride and hydrogen gas


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Mg + 2HCl --> MgCl2 + H2

Products predicted: magnesium chloride + hygrogen gas

C) Fe

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Products predicted: Iron(II) chloride, iron (III) chloride and hydrogen gas.

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How many total electrons can the p orbitals hold?<br> A. 6<br> B. 2<br> C. 10<br> D. 3
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Answer:

A. 6

Explanation:

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8 0
3 years ago
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Answer:

Wt. Avg. Atomic Weight => 63.35457 amu

Explanation:

Given              Isotopic             %Abundance     fractional          Wt Avg

                  At. Mass (amu)                                  abundance      contribution                    

Cu-63              62.93                      69.09              0.6909            43.4783

Cu-65              64.9278                  20.0668        0.200668        20.0668

Wt Average of all isotopes = ∑Wt Avg Contributions

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