Answer:
Original price: $
54.29
Discount percentage:
20
%
Explanation:
CUZ I AM A CAHIER FOR MC DONALDS JK ITS CUZ I AM SMART.
Answer: A. CaO
Took the test already.
Rate = k[A] = first order reaction
<h3>Further explanation</h3>
Given
Rate law
Required
A first-order reaction
Solution
The rate law : equation for the rate of chemical reaction
For reaction
aA + bB ⇒ C
The rate : r = k[A]ᵃ[B]ᵇ
The sum of exponents(a+b) is the reaction order
From the choice :
a. a+b = 2, second order reaction
b. a+b = 3, third order reaction
c. a+b = 4, fourth order reaction
d a+0 = 1, first order reaction
Answer:
44.4g
Explanation:
First we must find the moles of argon.
To do this, divide the number of atoms by Avogadro's number (6.022 ×10^23)
n= (6.7 × 10^23)/(6.022 × 10^23)
n=1.11258718034
Now to find mass, we complete the calculation
m= n × MM
where
m is mass
n is moles
MM is molecular mass
m= 1.11258718034 × 39.948
m= 44.4456326802
m= 44.4g
Answer:
Yah, it's true.
because protons are represented as helium (²4He) which are positive.
electrons are represented as 0-1e which is negative
