1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
vitfil [10]
2 years ago
13

What is the distinction between magma and lava​

Chemistry
2 answers:
BabaBlast [244]2 years ago
7 0

Answer:

Scientists use the term magma for molten rock that is underground and lava for molten rock that breaks through the Earth's surface.

natta225 [31]2 years ago
4 0

Answer:Scientists use the term magma for molten rock that is underground and lava for molten rock that breaks through the Earth's surface.

Explanation:

Magma is composed of molten rock and is stored in the Earth's crust. Lava is magma that reaches the surface of our planet through a volcano vent. As they are both molten rock that emerges from below the Earth, it can get confusing identifying one from the other.

You might be interested in
Which combination best represent the mass and charge of a neutron?
serg [7]
The correct answer is 1 amu; neutral
8 0
2 years ago
If 1.02 g of nickel reacted with 750. mL of 0.112 M hydrobromic acid, how much of each will be present at the end of the reactio
kati45 [8]

Answer:

35.1% is percent yield

Explanation:

<em>Full question: Assume no volume change.  If you formed 0.0910 atm of gas, what is the percent yield?</em>

<em />

The reaction that is occurring is:

Ni + 3HBr → NiBr₃ + 3/2H₂(g)

First, we will determine moles of Ni and HBr to determine limiting reactant and theoretical yield

Using ideal gas law, we can determine the moles of hydrogen formed. Thus, we can find percent yield:

<em>Moles Ni (Molar mass: 58.69g/mol):</em>

1.02g * (1mol / 58.69g) = 0.01738moles Ni

<em>Moles HBr:</em>

0.750L * (0.112mol/L) = 0.084 moles of HBr.

For a complete reaction of the 0.084 moles of HBr you need:

0.084mol HBr * (1 mole Ni / 3 moles HBr) = 0.028 moles of Ni.

As there are just 0.01738 moles of Ni, the Ni is limiting reactant. Assuming a theoretical yield, moles of H₂ produced are:

0.01738moles Ni * (3/2 H₂ / 1 mol Ni) = 0.02607 moles H₂

Now, moles of H₂ produced are:

PV = nRT

PV/RT = n

<em>Where P is pressure (0.0910atm)</em>

<em>V is volume (2.50L)</em>

<em>R is gas constant (0.082atmL/molK)</em>

<em>T is absolute temperature in Kelvin (30°C + 273.15 = 303.15K)</em>

<em>And n are moles</em>

PV/RT = n

0.0910atm*2.50L/0.082atmL/molK*303.15K = n

0.00915 moles = n

<em />

And percent yield (Produced moles / Theoretical moles * 100) is:

0.00915 moles / 0.02607moles =

<h3>35.1% is percent yield</h3>
8 0
2 years ago
Read the reaction and the statement. H2(g) + I2(g) ⇌ 2HI(g) The concentration of H2, I2 and HI are measured as 0.04 M, 0.08 M an
hjlf

Answer:

45467777777777yt3457942

4 0
2 years ago
Given 0.02 of KF, how many liters of solution are needed to make a 7.2 solution?
Dmitry_Shevchenko [17]

Answer:

1/360

Explanation:

let x = liters

molarity=moles of solute/liters of solution, 7.2=0.02/x or 7.2=(1/50)(1/x), 7.2(50)=(1/x), 360(x)=1, x=1/360

7 0
3 years ago
What substance can be used to electrolyze water? any electrolyte that is not easily reduced or oxidized hydrochloric acid only s
Alisiya [41]
<span>any electrolyte that is not easily reduced or oxidized</span>
7 0
3 years ago
Other questions:
  • [Cu(NH3)4](OH)2<br> Name it
    9·2 answers
  • Why is it important to analyze data?
    12·1 answer
  • Neeru is looking at her kids backpack and wants to compare their masses. What is the best tool Neeru can use to find the mass of
    8·1 answer
  • Which of the following is the major product in the electrophilic addition of HCl to (3S)-2,3-dimethylpent-1-ene?
    15·1 answer
  • Which scenario is an example of primary succession?
    6·1 answer
  • Choose the ground state electron configuration for Cr3+.
    8·1 answer
  • PLEASE HELP IM DYING OF CHEMISTRY, I NEED HELP FINDING ATOMIC MASS WITH ISOTOPES
    15·1 answer
  • Question 4<br> How many carbon-carbon triple bonds are present in a molecule of 4,5-diethyloctane?
    13·1 answer
  • At what temperature a gas with volume 175 L at 15 oC and 760mmHg will occupy a volume of 198 L at a pressure 640mmHg?
    5·1 answer
  • Which surface has the least amount of friction?
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!