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Fofino [41]
3 years ago
6

What is the answer? I’m stuck

Chemistry
2 answers:
olganol [36]3 years ago
3 0

Answer:

b

Explanation:

fuvutt

masha68 [24]3 years ago
3 0
B
because the right answer if b
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1. Explain, in terms of energy, why there are fewer apex predators than producers or primary
loris [4]

Can someone help because I need the same answer.

5 0
3 years ago
A chemist combine did 3.50g of potassium level with chlorine gas to yield 6.6 7g of potassium for it. Assuming all the potassium
slega [8]

Answer: mass of chlorine reacted is 3.18 g

Explanation:

2 K + Cl2 = 2KCl

no. of moles of K = mass / molar mass

= 3.50 / 39

= 0.0897

no. of moles of KCl = mass / molar mass

= 6.67 / 74.5

= 0.0895  

no. of moles of Cl2 required = number of moles of KCl / 2

= 0.0895 / 2

= 0.0448 moles  

mass of Cl2 required = no. of moles of Cl2 required x molar mass

= 0.0448 x 71

= 3.1808 g ≈ 3.18 g

Therefore mass of chlorine reacted is 3.18 g

4 0
3 years ago
Magnesium and Hydrochloric acid (HCl) react to form magnesium chloride (MgCl2) and hydrogen gas. If you started with 65.8 g of m
DiKsa [7]

Answer:

Cl

Explanation:

n for Mg=m:Mm

=65.8:24

=2.74mol

n for Cl=m:Mm

=45.7:70

=0.65mol

According to the <em>number of moles</em> we can say that the limiting reagent is Cl as it has few moles.

4 0
3 years ago
If 2.32 moles of iron react with excess oxygen gas, how many moles of Fe2O3 can be produced?
bearhunter [10]

Moles Fe₂O₃ produced : 1.16 moles

<h3>Further explanation</h3>

Given

2.32 moles of iron

Required

moles of Fe2O3

Solution

The reaction coefficient in a chemical equation shows the mole ratio of the reacting compounds (reactants and products)

Reaction

4 Fe + 3 O₂ ⇒  2 Fe₂O₃

From the equation, mol ratio Fe : mol Fe₂O₃ = 4 : 2, so mol Fe₂O₃ :

= 2/4 x mol Fe

= 2/4 x 2.32

= 1.16 moles

7 0
3 years ago
Why does the malachite green dye elute first? What physical properties does it have that affect it’s interaction with alumina an
Paladinen [302]

Answer:

MG is less polar  

Explanation:

The structures of crystal violet (CV) and malachite green (MG) are shown in Figures 1 and 2, respectively.  

The obvious difference is that CV has an extra dimethylamino group (polar).

Alumina is a polar adsorbent, so it retains the more polar substances more strongly and they are eluted last.

MG is less polar than CV, so it is retained less strongly and is eluted first.

6 0
3 years ago
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