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3 years ago

Did Adam Jackson win by

Chemistry

2 answers:

devlian [24]3 years ago

4 0

Answer:

by a number

Explanation:

HACTEHA [7]3 years ago

3 0

Answer:

Hm may you edit the question and put in the full question all it says is "Did Adam Jackson win by"

Explanation:

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Iron is extracted from iron oxide in the Blast Furnace: Fe 2 O 3 + 3 CO → 2 Fe + 3 CO 2

arsen [322]

a. mass of iron = 69.92 g

b. percent yield = 93%

<h3>Further eplanation </h3>

Percent yield is the compare of the amount of product obtained from a reaction with the amount you calculated

General formula:

Percent yield = (Actual yield / theoretical yield )x 100%

An actual yield is the amount of product actually produced by the reaction. A theoretical yield is the amount of product that you calculate from the reaction equation according to the product and reactant coefficients

Reaction

Fe₂O₃+3CO⇒2Fe+3CO₂

MW Fe₂O₃ : 159.69 g/mol

mol Fe₂O₃

$\tt \dfrac{100}{159,69}=0.626$

mol Fe₂O₃ : mol Fe = 1 : 2

mol Fe :

$\tt \dfrac{2}{1}\times 0.626=1.252$

mass of Fe(Ar=55.845 g/mol) :

$\tt 1.252\times 55.845=69.92~g$

actual yield = 65 g

theoretical yield = 69.92 g

percent yield :

$\tt =\dfrac{65}{69.92}=0.93=93\%$

8 0

3 years ago

Which statement about the greenhouse effect is NOT true?

Archy [21]

<span> Greenhouse gases were not historically present in the atmosphere.</span>

7 0

3 years ago

If you are operating a power driven vessel that is underway in conditions of restricted visibility, what should you do

swat32

If you are operating a power driven vessel that is underway in condition of restricted visibility, you are expected to do the following: sound prolonged blasts every two minutes. If the vessel is underway but is not moving, it is expected to sound two prolonged blast every two minutes. When one hears any of the signal above, one is expected to reduce speed to the minimum that is needed to keep on course.

3 0

2 years ago

How many electrons in an atom can have each of the following quantum number or sublevel designations?

stepan [7]

Answer :

(a) Number of electrons in an atoms is, 6

(b) Number of electrons in an atoms is, 2

(c) Number of electrons in an atoms is, 14

Explanation :

There are 4 quantum numbers :

Principle Quantum Numbers : It describes the size of the orbital. It is represented by n. n = 1,2,3,4....

Azimuthal Quantum Number : It describes the shape of the orbital. It is represented as 'l'. The value of l ranges from 0 to (n-1). For l = 0,1,2,3... the orbitals are s, p, d, f...

Magnetic Quantum Number : It describes the orientation of the orbitals. It is represented as . The value of this quantum number ranges from . When l = 2, the value of

Spin Quantum number : It describes the direction of electron spin. This is represented as . The value of this is for upward spin and for downward spin.

Number of electrons in a sublevel = 2(2l+1)

(a) 4p

n = 4

Value of 'l' for 'p' orbital : l = 1

At l = 1, $m_l=+1,0,-1$

Number of electrons in an atoms = 2(2l+1) = 2(2×1+1) = 6

(b) n = 3, l = 1, ml = +1

As we know that, a sublevel of 'p' orbital can accommodate 6 electrons but 1 orbital can accommodate only 2 electrons. So,

Number of electrons in an atoms for (ml = +1) = 2

(b) n = 5, l = 3

Number of electrons in an atoms = 2(2l+1) = 2(2×3+1) = 14

6 0

3 years ago

Kit wants to see what happens to chocolate chips if they are placed in a bowl and heated in the microwave. Which is likely the m

kvasek [131]

B. When melted, the chocolate will take the shape of the bowl.

Explanation:

The chocolate chips are heated in the bowl, they will assume the shape of the bowl or container they are placed in.

They simply undergo a phase change from solids to liquids.
Solids generally have fixed volume with their rigid shapes.
Liquids and gases takes up the shape of the container they are placed in.
Baring no loss of chocolate, the weight will remain the same because weight is function of mass and gravity. Gravity will remain the same, and the amount of matter, the mass will also be the same.

Learn more:

Phase change brainly.com/question/1875234

#learnwithBrainly

4 0

2 years ago