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anzhelika [568]
3 years ago
9

Plzzzzz helppppp it’s due already I’ll mark Brainly

Chemistry
1 answer:
Anna007 [38]3 years ago
8 0
Is it too late to answer?
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Convert this number to its standard form 4.05x10
klasskru [66]

The answer is 40.5.

Standard form is in answered or not in a different form.

So, you must solve this.

4.05 * 10 = 40.5


Have a great day :) Let me know if you need help with anything else!

6 0
3 years ago
If solid iron is dropped in liquid iron, it will most likely?
S_A_V [24]

it will sink

Explanation:

the solid iron will sink because it is dense than the liquid iron I will sink and it will melt

4 0
3 years ago
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Why do ionic compounds conduct electric current when they are melted or dissolved in water?
erik [133]
It is beacuse the ions in the melted or aqueous ionic compound is mobile and can freely move through the fluid and conduct electricity.
4 0
4 years ago
Use the term selectively permeable in a sentence
atroni [7]
Selectively Permeable means that some things can move across the cell membrane while others cannot.  
Here is a sentence: Because of the selectively permeable membrane, the germs were kept out while the food went in.
8 0
3 years ago
The reaction 2no2 ? 2no + o2 follows second-order kinetics. at 300 °c, [no2] drops from 0.0100 m to 0.00650 m in 100.0 s. the ra
Ulleksa [173]
For a second order kinetics, the reaction rate expression would be

-r = -dCa / dt = kCa^2    where k is the reaction constant and Ca is the concentration of reactant A.

Integrating this from Cao to Caf, will have the expression,

1/Caf - 1/Cao = kt

Substituting the given values and calculating for k,

1/0.00650 - 1/0.0100 = k(100)
k = 0.538 / M-s
4 0
3 years ago
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