Other Chemistry Answers

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