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riadik2000 [5.3K]
3 years ago
10

Hydrochloric acid reacts with sodium hydroxide to produce sodium chloride and water. If 20.6 g of sodium hydroxide reacts with a

n excess of hydrochloric acid, how many grams of sodium chloride are produced? HCl + NaOH → NaCl + H2O
Chemistry
1 answer:
astraxan [27]3 years ago
4 0

Answer:

30.1 g NaCl

Explanation:

Your first conversion is converting grams NaOH to moles of NaOH using its molar mass (39.997 g/mol). Then, use the mole ratio of 1 mol NaCl for every 1 mol NaOH to get to moles of NaCl. Then finally multiply by the molar mass of NaCl (58.44 g/mol) to get grams of NaCl.

20.6 g NaOH • (1 mol NaOH / 39.997 g NaOH) • (1 mol NaCl / 1 mol NaOH) • (58.44 g NaCl / 1 mol NaCl) = 30.1 g NaCl

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STatiana [176]
Since you're only asking for the last 3 items, here are the answers:
3. Maine is located in the northern hemisphere. If there is a high pressure, the wind is blowing clockwise. If there is a low pressure, the wind direction will be in the opposite direction.

4. Colorado is in the northern hemisphere. If there is a low pressure, the wind is going counterclockwise. If there is a high pressure, the opposite is true.

5. There is no map so I can't give you the exact answers.
8 0
3 years ago
Qué volumen ocupan 5 moles de un gas que se encuentran a 28°C y 3 atm de presión?
lys-0071 [83]

<em>What volume do 5 moles of a gas occupy at 28 ° C and 3 atm of pressure?</em>

<em />

<h3>Further explanation</h3>

In general, the gas equation can be written  

\large {\boxed {\bold {PV = nRT}}}

where  

P = pressure, atm  

V = volume, liter  

n = number of moles  

R = gas constant = 0.08206 L.atm / mol K  

T = temperature, Kelvin  

n= 5 moles

T=28 +273=301 K

P=3 atm

The volume of the gas :

\tt V=\dfrac{nRT}{P}\\\\V=\dfrac{5\times 0.082\times 301}{3}\\\\V=\boxed{\bold{41.136~L}}

5 0
3 years ago
What is the maximum number of electrons an s subshell can have?
vodka [1.7K]

Answer:

The answer is 2

The maximum number an subshell can have is 2

8 0
2 years ago
Read 2 more answers
Is NaCl an ionic or covalent compound?<br>Explain.​
diamong [38]
NaCl is an ionic compound because Chlorine is a nonmetal and Sodium is a metal (Alkali Metal Group)
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3 years ago
2NO + 3MnO2 + 4H â 2NO3- + 3Mn2 + 2H2O For the above redox reaction, assign oxidation numbers and use them to identify the eleme
mixer [17]

Answer:

Manganese decreases from 4+ to 2+ (reduced and oxidizing agent) and nitrogen increases from 2+ to 5+ (oxidized and reducing agent).

Explanation:

Hello there!

In this case, according to the given redox reaction, we rewrite it as a convenient first step:

2NO + 3MnO_2 + 4H^+ \rightarrow 2NO_3^- + 3Mn^{2+} + 2H_2O

Next, we assign the oxidation numbers as follows:

2N^{2+}O^{2-} + 3Mn^{4+}O^{-2}_2 + 4H^+ \rightarrow 2(N^{5+}O^{2-}_3)^- + 3Mn^{2+} + 2H^+_2O^{2-}

Thus, we can see that both manganese and nitrogen undergo a change in their oxidation number, the former decreases from 4+ to 2+ (reduced and oxidizing agent) and the latter increases from 2+ to 5+ (oxidized and reducing agent).

Regards!

4 0
2 years ago
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