Answer:
The molarity of the HCl solution is 4M.
Explanation:

Hence, the molarity of the HCl solution = 4 M
I think it is A correct me if i am wrong hope this helps
Answer:
<h2>0.2 m/s²</h2>
Explanation:
The acceleration of an object given it's mass and the force acting on it can be found by using the formula

f is the force
m is the mass
From the question we have

We have the final answer as
<h3>0.2 m/s²</h3>
Hope this helps you
For 23., you have to find a way to measure your heart rate not increase it. search it up on google.
Under STP condition, the gas has a rule of 22.4 L per mole. And according to the ideal gas law, V1/T1=V2/T2. Under STP, 1.5 mol gas has volume of 33.6 L. So the volume under 22 C is 33.6*295/273=36.3 L.