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algol13
3 years ago
11

Which statement about climate is true?

Chemistry
1 answer:
Y_Kistochka [10]3 years ago
6 0
I believe the answer is B!
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There are 2 grams of sulfur and 0.45 grams of copper. What is the
Elanso [62]

Answer:

18.3%

Explanation:

Add the numbers together, and then take the number of grams of the substance, in this case copper, not coppper lol. divide the .45 by 2.45 to get 18.3

7 0
2 years ago
Suppose that a catalyst lowers the activation barrier of a reaction from 125kJ/mol to 55kJ/mol125⁢kJ/mol to 55kJ/mol. By what fa
sineoko [7]

Answer:

The factor of increasing reaction rate is 1,85x10¹².

Explanation:

Using arrhenius formula:

k = A e^\frac{-E_{a}}{RT}

Where k is rate constant; A is frecuency factor; Eₐ is activation energy; R is gas constant (0,008134 kJ/molK); T is temperature 25°C = 298,15K

Thus, replacing for an activation energy of 125 kJ/mol assuming A as 1:

k = 1,25x10⁻²²

When activation energy is 55kJ/mol:

k = 2,31x10⁻¹⁰

Thus, the factor of increasing reaction rate is:

2,31x10⁻¹⁰/1,25x10⁻²² =<em> 1,85x10¹²</em>

<em></em>

I hope it helps!

8 0
3 years ago
What is a common land form that is formed when chemical weathering, specifically carbonation, is taking place?
skad [1K]

Answer:

plateaus

Explanation:

6 0
3 years ago
Sanjay is learning about the elements that make up Earth’s crust. Ms. Richards, his Earth science teacher, gives him an element
oksano4ka [1.4K]

Answer:

Iron

Hope this helps! Stay safe!

(Plz vote me as brainliest)

3 0
3 years ago
The temparature of boiling water cannot be measured by _______ temparature
katrin [286]

Answer:

Temperature of boiling water cannot be measured by a Clinical thermometer The reason behind this is that the range of clinical thermometer varies between only 35° C to 42° C.

4 0
2 years ago
Read 2 more answers
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