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RUDIKE [14]
3 years ago
7

Lava is extrusive magma. True False

Chemistry
1 answer:
Mars2501 [29]3 years ago
4 0
True 
Extrusive rock is on the surface 
lava and magma are the same thing, except lavas on the surface of the earths crust, while magma is below the crust.
Hope this helps
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2. Calculate the molarity of a solution if there are 1.5 mol of NaCl in 2.3 L of solution.
rodikova [14]

Answer:

0.65 M

Explanation:

Molarity (M) is the amount of moles of a substance per liter.

In other words, M = moles of substance / liters of solution

Since you're already given the moles of NaCl and the volume of the solution, you can plug those into the equation.

M = moles of NaCl / liters of solution

M = 1.5 mol NaCl / 2.3 L

M = 0.65 mol/L (or 0.65 M)

5 0
2 years ago
Which one is wrong I did them but it’s saying I got partial credit
agasfer [191]
Phosphorus triiodide*
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2 years ago
Oxidation number ofAl2S12O7
Savatey [412]

Answer:

-2? if wrong im sorry please tell me what I did that was incorrect ty  Explanation:

6 0
2 years ago
Which of the following solutions is a good buffer system?A solution that is 0.10 M HCN and 0.10 M NaClA solution that is 0.10 M
patriot [66]

Answer:

A solution that is 0.10 M HCN and 0.10 M LiCN

Explanation:

  • A good buffer system contains a weak acid and its salt or a weak base and its salt.
  • In this case; A solution that is 0.10 M HCN and 0.10 M LiCN, would make a good buffer system.
  • HCN is a weak acid, while LiCN is a salt of the weak acid, that is, CN- conjugate of the acid.
8 0
3 years ago
A student pours 800.0 mL of a 3.000 molar solution of sodium hydroxide into a 2.00 liter volumetric flask and fills the flask up
hammer [34]
M1V1 = M2V2
M1 = 3.000 M
V1 = 0.8000 L
M2 = ?
V2 = 2.00 L

M2 = M1V1/V2 = (3.000 M)(0.8000 L)/(2.00 L) = 1.20 M
5 0
2 years ago
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