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mart [117]
3 years ago
7

Answer the question below 100 points and brainlist

Chemistry
2 answers:
Kipish [7]3 years ago
5 0

Answer:

i think A but im not sure

Explanation:

dedylja [7]3 years ago
3 0

Answer:

Metamorphic rock.

Explanation:

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Slav-nsk [51]

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It would require 80 g of NaOH .

Explanation:

8 0
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What about Kevlar makes it so strong? (1 point)
vfiekz [6]

I believe the answer is (B) as molten Kevlar when spun into fiber, its polymers have a crystalline arrangement.

Hope that helped!

7 0
2 years ago
You want to make 500 ml of a 1 N solution of sulfuric acid (H2SO4, MW: 98.1). How many grams of sulfuric acid do you need?
umka21 [38]

Answer:

24.525 g of sulfuric acid.

Explanation:

Hello,

Normality (units of eq/L) is defined as:

N=\frac{eq_{solute}}{V_{solution}}

Since the sulfuric acid is the solute, and we already have the volume of the solution (500 mL) but we need it in liters (0.5 L, just divide into 1000), the equivalent grams of solute are given by:

eq_{solute}=N*V_{solution}=1\frac{eq}{L}*0.5L=0.5 eq

Now, since the sulfuric acid is diprotic (2 hydrogen atoms in its formula) 1 mole of sulfuric acid has 2 equivalent grams of sulfuric acid, so the mole-mass relationship is developed to find its required mass as follows:

m_{H_2SO_4}=0.5eqH_2SO_4(\frac{1molH_2SO_4}{2 eqH_2SO_4}) (\frac{98.1 g H_2SO_4}{1 mol H_2SO_4} )\\m_{H_2SO_4}=24.525 g H_2SO_4

Best regards.

4 0
3 years ago
How many atoms of oxygen are represented in 2Fe(NO3)2? ( My answer: C) Correct?
astra-53 [7]

How many atoms of oxygen are represented in 2Fe(NO3)2?

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3 years ago
Which element reacts spontaneously with 1.0 M HCl at room temp? 1.copper 2.gold 3.silver 4.zinc
iragen [17]
Zinc will most likely react the fastest
8 0
3 years ago
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