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
Volgvan
3 years ago
9

After Pangaea broke up, North America became part of what?

Chemistry
1 answer:
ryzh [129]3 years ago
3 0
What do you mean? After Pangaea broke up North America began to drift towards is present day location.
You might be interested in
Common effects of cocaine include
viktelen [127]
Constricted blood vessels
7 0
3 years ago
HEEELLP WILL GIVE 100 PIINTS ASAP
adell [148]

Answer:

16

Explanation:

8 0
2 years ago
If you have 6.25g of O2, how many moles of H2O are produced?
denis23 [38]

Answer:

0.4 moles of water produced by 6.25 g of oxygen.

Explanation:

Given data:

Mass of oxygen = 6.25 g

Moles of water produced = ?

Solution:

Chemical equation;

2H₂ + O₂  → 2H₂O

Number of moles of oxygen:

Number of moles = mass/ molar mass

Number of moles = 6.35 g/ 32 g/mol

Number of moles = 0.2 mol

Now we will compare the moles of oxygen with water:

                    O₂          :          H₂O

                     1            :            2

                   0.2          :        2×0.2 = 0.4 mol

0.4 moles of water produced by 6.25 g of oxygen.

8 0
3 years ago
A reaction of importance in the formation of smog is that between ozone and nitrogen monoxide described by O 3 ( g ) + NO ( g )
Aleksandr [31]

Answer:

(a) 7.11x10⁻⁴ M/s

(b) 2.56 mol.L⁻¹.h⁻¹

Explanation:

(a) The reaction is:

O₃(g) + NO(g) → O₂(g) + NO₂(g)   (1)

The reaction rate of equation (1) is given by:

rate = k*[O_{3}][NO]     (2)

<u>We have:</u>

k: is the rate constant of reaction = 3.91x10⁶ M⁻¹.s⁻¹

[O₃]₀ = 2.35x10⁻⁶ M

[NO]₀ = 7.74x10⁻⁵ M

Hence, to find the inital reacion rate we will use equation (2):

rate = k*[O_{3}]_{0}[NO]_{0} = 3.91 \cdot 10^{6} M^{-1}s^{-1}*2.35\cdot 10^{-6} M*7.74 \cdot 10^{-5} M = 7.11 \cdot 10^{-4} M/s  

Therefore, the inital reaction rate is 7.11x10⁻⁴ M/s

(b) The number of moles of NO₂(g) produced per hour per liter of air is:

t = 1 h

V = 1 L

\frac{\Delta[NO_{2}]}{\Delta t} = rate

\frac{\Delta[NO_{2}]}{\Delta t} = 7.11 \cdot 10^{-4} M/s*\frac{3600 s}{1 h} = 2.56 mol.L^{-1}.h{-1}

Hence, the number of moles of NO₂(g) produced per hour per liter of air is 2.56 mol.L⁻¹.h⁻¹

I hope it helps you!                                

5 0
3 years ago
Most chemical reactions take place in labs true or false
arsen [322]
The answer would most likely be False
7 0
3 years ago
Read 2 more answers
Other questions:
  • 33.1 x 105 <br> What is the scientific notation
    13·1 answer
  • Which two would likely bond to form a salt?
    9·2 answers
  • By definition, all acids are harmful for human beings. true or false
    5·2 answers
  • [HELP PLEASE]What is the electronegativity from largest to smallest for Chlorine [Cl], Carbon [C], and Arsenic [As]? (hint: use
    10·1 answer
  • How do substances and mixtures diifer
    5·1 answer
  • Find ionic compounds ​
    10·1 answer
  • 1) h2+o2 -&gt; h2o<br><br> does equation 1 follow the law of conservation of mass? how can you tell?
    10·1 answer
  • I will mark brainliest if all answered or if you don’t want to answer them all please just answer 9-15
    15·1 answer
  • How many molecules are in 502.1 g of NaF?
    5·1 answer
  • How many moles of a gas are contained in 2.085 L at STP?
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!