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Nimfa-mama [501]
2 years ago
15

I need help with these

Chemistry
1 answer:
nikklg [1K]2 years ago
8 0
2. Rubidium
3. Antimony
4. Ytterbium
5. Einsteinium
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The rate constant for the first-order decomposition at 45 °C of dinitrogen pentoxide, N2O5, dissolved in chloroform, CHCl3, is 6
weeeeeb [17]

Answer:

Rate of the reaction= 9.92× 10^-5 M² min-1

Explanation:

Using the equation of reaction

2N2O5 ⟶ 4NO2+O2

Rate = k[N2O5]²

From the question k= 6.2×10-4

[N2O5]= 0.4

Rate = 6.2×10-4[0.4]²= 9.92×10-5M² min-1

7 0
3 years ago
What is the relationship between the electric field strength at a point and its distances from the source charge?
diamong [38]

Explanation:

The intensity of electric field from a certain point that is assumed is proportional inversely to the square of distance’s magnitude from source. As one can see the electric field intensity is proportional inversely. Then the increase in magnitude of the space between source charge the electric field intensity decreases.

Since the proportionality is to square of distance, hence change or increase in distance is squared and that many times intensity of electric field decreases. So relation between them is inverse proportionality.  

6 0
3 years ago
A student tests two solutions with the same acid-base indicator. If the two solutions have different hydroxide ion concentration
sammy [17]
The answer is c the indicator will have different colors in the different solutions
 
8 0
3 years ago
Read 2 more answers
Help! I can't find this answer anywhere!
Gnom [1K]
What is the question that needs an answer?
8 0
3 years ago
Elements
Snezhnost [94]

Answer:

elements are composed of

electrons with a little mass and negative charge

protons with mass and positive charge

neutrons with mass and no charge

isotopes same number of protons, different in neutrons

share me the other part of the photo to complete!!!

7 0
3 years ago
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