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If there are 2.50 moles of an unknown atomic element and the mass of this amount is 60.78 g, the unknown element must be:
A - Sodium
B - Magnesium
C - Aluminium
D - Silicon
The mass of a sample of 0.124 mol of tin(II) fluoride is _____g. Remember to provide your answer using significant digits.
In 50g of ammonia, there are _____ mol. Remember to use significant digits for your answer
The molar mass of iron (III) sulfate is ______ g/mol.
The expected products after combining sodium iodide with lead(II) nitrate would likely be:
A - NaNO3(aq) + PbI(s)
B - Na(NO3)2(aq) + PbI2(s)
C - Na(NO3)2(aq) + PbI(s)
D - NaNO3(aq) + PbI2(s)
Convert 540000000 to scientific notation in the form of a.b X 10c. Enter the digits a, b, and c in this order for your 3-digit numerical answer.
When performing the calculation below, the final answer would be rounded to 10, according to the rounding and significant digit rules.
(4.36 X 2.2) + 0.8580
True or false?
Which of the following solution is hypotonic with fluids in RBC ?(Assume that ionic solid substances completely dissociates in the solution) (a) 0.2 M NaCl (b) 0.1 M NaCl (c) 0.18 M NaCl (d) given all
Which of the following solution is hypotonic with fluids in RBC ?(Assume that ionic solid substances completely dissociates in the solution) (a) 0.2 M NaCl (b) 0.1 M NaCl (c) 0.18 M NaCl (d) given all
Experiments carried out by alchemists were NOT able to support _____.
a
all of the above
b
the idea that there were only five elements: earth, air, fire, water and ether
c
the idea that lead could be made into gold under the right circumstances
d
the philosophers' ideas because alchemists' experiments were unsuccessful
Experiments carried out by alchemists were NOT able to support _____.
a
all of the above
b
the idea that there were only five elements: earth, air, fire, water and ether
c
the idea that lead could be made into gold under the right circumstances
d
the philosophers' ideas because alchemists' experiments were unsuccessful
When 1.00 kg lead specific heat =0.13jg °c at 100.0°c is adde to a quantity of water at 28.5, The final temperature of the lead water mixture is 35.2°c what is the mass of water present?
How many atoms does 2.0 moles of helium represent
How many moles if C2H6 does 3.01x10^23
My question is about biochemistry. Why is there a need to characterize enzymes or why characterization of enzyme is important?
10 L of o2to gas to molecules
