Answer:
79.986
Step-by-step explanation:
Let A represent isotope ⁷⁹Br
Let B represent isotope ⁸¹Br
From the question given above, the following data were obtained:
For Isotope A (⁷⁹Br):
Mass of A = 79
Abundance of A (A%) = 50.69%
For isotope B (⁸¹Br):
Mass of B = 81
Abundance of B (B%) = 49.31%
Relative atomic mass of Br =?
The relative atomic mass (RAM) of Br can be obtained as follow:
RAM = [(Mass of A × A%) /100] + [(Mass of B × B%) /100]
= [(79 × 50.69) /100] + [(81 × 49.31) /100]
= 40.0451 + 39.9411
= 79.986 amu
Thus, the relative atomic mass of Br is 79.986
If the line that goes through (9, 6) is perpendicular to y = -1/3x + 7, then their slopes will be opposite reciprocals. The slope of the line given is -1/3. The opposite reciprocal of -1/3 is +3. If we have our new line passing through point with x coordinate 9 and y coordinate 6, we will use that x and y and the slope of 3 to solve the slope-intercept equation for b. Like this: 9 = 3(6) + b. 9 = 18 + b and b = -9. That means that the new equation, the one that is perpendicular to the given line, is y = 3x - 9.
Answer:
Like if 40 Divided by 2 = 20
Step-by-step explanation:
You take 40 and put it into a little box and the put the 2 on the outside it splits it into 2 portions basically.
Step-by-step explanation:
I hope this helps you answer your questions about graphing the line.
Hi there!
First of all we're going to look at all the numbers in their places in 845,001.
1 is in the ones place
The zero beside the 1 is in the tens place
The next zero is in the hundreds place
5 is in the thousands place
4 is in the ten-thousands place
And 8 is in the hundred-thousands place.
Now, let's look at 8 for now. We see it's in the hundred-thousands place.
In order to round this particular number we look at the number beside it (to the right)
What would make this really easy is if you remember the term,
5 or more, raise the score
4 or less, let it rest
So if the number beside the 8 is 4 or less, round down, but if it were bigger, you'd round the number up.
Look! In our case there is a 4 next to the 8 which means to round down...
So 845,001 rounded to the nearest hundred thousand is 800,000.
Hope this helps! <3
