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PilotLPTM [1.2K]
3 years ago
5

In the Arrhenius equation, temperature is directly proportional to which factor

Chemistry
1 answer:
pentagon [3]3 years ago
5 0
Temperature depends on reaction rate

hope this helps.
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There are two naturally occurring isotopes of boron. 10 B has a mass of 10.0129 u. 11 B has a mass of 11.0093 u. Determine the a
Vanyuwa [196]
<h2>Natural Abundance for 10B is 19.60%</h2>

Explanation:

  • The natural isotopic abundance of 10B is 19.60%.
  • The natural isotopic abundance of 11B is 80.40%.
  • The isotopic masses of boron are 10.0129 u and 11.009 u respectively.

For calculation of abundance of both the isotopes -

Supposing it was 50/50, the average mass would be 10.5, so to increase the mass we need a more percentage of 11.

Determining it as an equation -

10x + 11y= 10.8

x+y=1 (ratio)

10x + 10y = 10

By taking the denominator away from the numerator

we get;

y = 0.8

x + y = 1

∴ x = 0.2

To get percentages  we need to multiply it by 100

So, the calculated abundance is 80% for 11 B and 20% 10  B.

5 0
3 years ago
What is Hurricane negative effects on human life in Florida
irina1246 [14]
Water polluting
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electricity cuts
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4 0
3 years ago
since butane is not found on the periodic table,how could you find the molar mass of butane(mass of one mole of butane molecules
Wittaler [7]

We know, It's atomic formula = C4H10

Now, we know molar mass of C = 12 & H=1

so, it would be: 12*4+1*10 = 48+10 = 58

3 0
3 years ago
Read 2 more answers
What is the magnitude of the electrostatic force between a singly charged sodium ion and an adjacent singly charged chlorine ion
Arisa [49]
To know the electrostatic force between two charges or between two ions, you can use the Coulomb's Law. The equation is F = k*q1*q1/r^2, where F is the electrostatic force, q1 and q2 are the charger for Na and Cl, and r is the distance between the centers of both atoms. In literature, the distance is 0.5 nm or 0.5 x 10^-9 meters. The charge for Na+ and Cl- is the same magnitude but different in sign. Since Na+ is a cation, its charge is +1.603x10^-19 C (the charge of an electron). For Cl- being an anion, its charge is -1.603x10^-19 C. The constant k is an empirical value equal to 9x10^9. Using the formula:

F = (9x10^9)(+1.603x10^-19)(-1.603x10^-19)/(0.5 x 10^-9)^2
F = -9.25 x 10^-10 Newtons

The negative denotes that the net force is more towards the Cl- ion.
5 0
3 years ago
1.5g of magnesium ribbon is burnt in oxygen to produce 2.5g of magnesium oxide. How much oxygen is required in grams?
Furkat [3]

Answer:

2.5 grams

Explanation:

law of conservation of mass applies. the magnesium completely burns

4 0
2 years ago
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