Not without a proper conversion.
Yes, R404 is denser than air. R404 is a refrigerant gas that is typically used in cooling systems and it is heavier than air, so it can sink and accumulate in low-lying areas.
No. NEVER mix refrigerants or use any refrigerant other than what the system is intended to use.
NO
all refrigeration standing pressure in psi
INSTEAD
there is no set answer ,you have to ajust pressure using subcool and superheat. if these terms confuse you i recomend calling an hvac contractor
No. You absolutely cannot mix any refrigerants. You should completely recover all the old refrigerant and charge the system, with the new refrigerant, using the superheat method.
you can use or , otherwise, or rather than.
what can i use instead of glyerin in making tootpaste
You Can Use Paper Bags Instead Of Plastic
We could use leather instead.
In this situation, you should use "what" instead of "which."