the problem doesn’t provide temperature, should i use 273k?

the problem doesn’t provide temperature, should i use 273k?

the answer needs to be in scientific notation.

Need to show the equation to solve this proble.

Need to show the equation used to figu this problem out.

2.2lb=1kg;16oz=1lb

The answer needs to be in the correct significant figure.

What is the formula needed to solve this

What is the equation I need to solve this?

I need to know the volume of the object

How do I solve this problem with the scientific notation? And when it comes to the rules of significant figures, do I use the rule pertaining to subtraction or the one pertaining to multiplication...

For the reaction 4NH3 + 7O2 --> 4NO2 + 6H2O. a.) Provide a valid expression for the reaction rate b.) How is the rate at which O2 disappears related to the...

The decomposition of nitramide, NH2NO, is a first-order reaction. a.) Write the rate law formula. b.) When starting with 0.105 M NH2NO2, with rate constant k = 5.2 x 10^-2 s^-1...

I'm doing my online chemistry summer class and significant digits are included, of course. But I'm confused about them because everything I believe is being contradicted. Here's what I mean... For...

Calculate the amount of heat needed to melt 45.9 g of solid ethanol and bring it to a temperature of -37.4 degrees celsius. Round your answer to 3 significant digits. Also, be sure...

Write the cell notation for an electrochemical cell consisting of an anode where Cr2+(aq) is oxidized to Cr3+(aq) at a platinum electrode and a cathode where Fe3+(aq) is reduced to Fe2+(aq)...

Write the cell notation for an electrochemical cell consisting of an anode where Cr2+(aq) is oxidized to Cr3+(aq) at a platinum electrode and a cathode where Fe3+(aq) is reduced to Fe2+(aq)...

the compound xylene consists of 90.49% C and the rest is hydrogen.What is the empirical formula?

1.16 mmol carbon disulfide

1.48 mol carbon tetrafluoride

What is the volume of a rock with a density of 3.68 g/cm3 and a mass of 430 g?

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