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irinina [24]
3 years ago
12

Name the most abundant isotope for these elements: Na = ________ P = _______ Mn = ________

Chemistry
1 answer:
Elan Coil [88]3 years ago
5 0

Answer: 11, Na, 23, 100, −9.529 ... phosphorus, 15, P, 31, 100, −24.441 ... manganese, 25, Mn, 55, 100, −57.706.

Explanation: Make me Brainelist

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If a 4L solution is 80% concentrated lime juice and 20% water, how much 30% concentrated lime juice must be added so that the co
miv72 [106K]

The volume of 30% concentrated lime juice that must be added to a 4L solution of 80% concentrated lime juice and 20% water is 6 L.

<h3>What are mixtures?</h3>

Mixtures are substances which are formed when two or more substances are physically combined together.

Mixtures are heterogenous in nature and the constituents can be easily separated.

The volume of 30% concentrated lime juice that must be added to a 4L solution of 80% concentrated lime juice and 20% water, so that the concentration of the resulting solution is 50% concentrated lime juice is determined as follows:

Let the volume of 30% lime juice required be x;

total volume of lime juice = 0.3x

For 80% lime juice, volume of lime juice = 0.8 * 4 = 3.2 L

New volume of lime juice = 4 + x

New amount of lime juice added = 3.2 + 0.3x

Also, new amount of lime juice = 0.5 * ( 4 + x)

3.2 + 0.3x = 0.5 * ( 4 + x)

0.2x = 1.2

x = 6 L

In conclusion, the volume to be added is obtained from the percent concentration.

Learn more about percent concentration at: brainly.com/question/19379932

#SPJ1

7 0
2 years ago
Where is the earth curst thinkest
Dafna11 [192]
The crust of the Earth is thickest beneath the continents. 
6 0
3 years ago
what is the theoretical yield (in mols) of magnesium when 1.1 x 102 mols of lithium reacts with excess magnesium chloride.
Bezzdna [24]

Explanation:

Use the molecular formula to find the molar mass; to obtain the number of moles, divide the mass of compound by the molar mass of the compound expressed in grams.

6 0
3 years ago
After reading “The Crisis, No. 1,” what do you think Paine means by the line, "These are the times that try men’s souls"? Cite e
posledela
Paine is referring to the difficulties facing the colonists to stand up against the British Empire against imposed taxes and foreign rule. He says "<span>Tyranny, like hell, is not easily conquered; yet we have this consolation with us, that the harder the conflict, the more glorious the triumph". This emphasises his point that the fight is against tyranny, although the battle may be difficult.</span>
3 0
3 years ago
Read 2 more answers
Question 5 (1 point)
Aleksandr-060686 [28]

Answer : The pressure it exert under these new conditions will be, 87 atm

Explanation :

Combined gas law is the combination of Boyle's law, Charles's law and Gay-Lussac's law.

The combined gas equation is,

\frac{P_1V_1}{T_1}=\frac{P_2V_2}{T_2}

where,

P_1 = initial pressure of gas = 19 atm

P_2 = final pressure of gas = ?

V_1 = initial volume of gas = 100 L

V_2 = final volume of gas = 20 L

T_1 = initial temperature of gas = 25^oC=273+25=298K

T_2 = final temperature of gas = 0^oC=273+0=273K

Now put all the given values in the above equation, we get:

\frac{19atm\times 100L}{298K}=\frac{P_2\times 20L}{273K}

P_2=87atm

Therefore, the pressure it exert under these new conditions will be, 87 atm

5 0
3 years ago
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