I’m pretty sure D transverse
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:
0.67 g
Explanation:
We know that 1 mole of an element is 6.02 x 10^(23) atoms
Now, arsenic has 5.49 × 10²¹ atoms
Thus;
Number of moles of arsenic = 5.49 × 10²¹ × 1/6.02 x 10^(23) = 9 × 10^(-3) moles
We are told that;
one mole of arsenic = 74.92 g.
Thus, 9 × 10^(-3) moles = 9 × 10^(-3) × 74.92/1 = 0.67428 g ≈ 0.67 g
The strategy that is not a suggested way of treating or preventing a communicable disease is to receive a vaccine while you are ill from a virus.
<h3>Treatment and prevention of communicable disease</h3>
A communicable disease is a type of disease that can spread from one person to another in the following ways:
- contact with blood and bodily fluids;
- breathing in an airborne virus, or
- being bitten by an insect.
There are various ways to prevent the spread of communicable diseases which include:
- Immunization against infectious diseases,
- washing of hands regularly or the use of hand sanitisers if soap is not available.
- Get tested for a suspected infectious disease
To receive a vaccine while ill from a virus is not advisable because there may be chances of spreading your illness to health care workers who are administering the vaccine.
Learn more about communicable diseases here:
brainly.com/question/25476918
Answer:
the molar mass is the mass of a given chemical element or chemical compound divided by the amount of substance