It's A; decomposition reactions involve one reactant becoming 2 or more products.
Combinations of different metals form alloys. An alloy composed by mercury and other metal (or metals) forms amalgam. When a true alloy is formed, the component metals are mixed together at a temperature which is greater than the melting point of all of them.Apr 7, 2017
Answer:
Explanation:
In this question, we have to start with the calculation of the <u>amount of drug in each powder</u>:
Powder A: Total mass of 0.5 Kg percentage of 0.038%
Powder B: Total mass of 10 Kg percentage of 0.043%
<u>The total mass of powder would be</u>:
<u>The total mass of drug would be</u>:
Now we can calculate the <u>percentage</u>:
I hope it helps!
Answer:
There's probably going to have some signs that might lead to the storm.
Explanation:
Answer:
The mass of third isotope is 25.98 amu.
Explanation:
Mass of Mg²⁴ = 23.985 amu
Mass of Mg²⁵ = 24.986 amu
Abundance of Mg²⁴ = 78.99 %
Abundance of Mg²⁵ = 10%
Abundance of third isotope = 11.01%
Atomic weight of magnesium = 24.305
Solution:
Atomic mass = ( % age of first isotope × its atomic mass) + (% age abundance of second isotope × its atomic mass) + ( % age of third isotope × its atomic mass ) / 100
Now we will put the values in formula.
24.305 = (78.99 × 23.985 ) + (10 ×24.986 ) + ( 11.01 × X) / 100
24.305 = 1894.56 + 249.9 +( 11.01 × X ) / 100
24.305 × 100 = 2144.46 + ( 11.01 × X)
2430.5 - 2144.46 = (11.01 × X)
286.04 / 11.01 = X
25.98 = X
The mass of third isotope is 25.98 amu.