Answer:

Explanation:
Hello,
In this case, in order to compute the required mass, we first must notice that 6.022x10²³ formula units of sodium sulfate contain 1 mole of such compound (Avogadro's relationship). Moreover, one mole of sodium sulfate contains 142.04 g, which is in fact, the molar mass. Thereby, the required mass is computed via the following mole-mass-particles relationship:

Regards.
Answer:
D or A
<em>But I do know...</em>
It's because new strains of the virus are constantly appearing and evolving, so the vaccine must change along with them.
Answer:
heat?
Explanation:
the sun warms the popsicle, therefore melting th popsicle.
sry if this is wrong
Answer:
d
Explanation:
because nuclear charge ( no. of protons) increases