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Masja [62]
3 years ago
5

In the lab, you took mass and volume measurements and plugged them into the density formula and calculated densities for differe

nt objects. How do you preserve the accuracy and precision of your measurements when doing calculations with the measurements?
Chemistry
1 answer:
Diano4ka-milaya [45]3 years ago
8 0
You <span>preserve the accuracy and precision of your measurements when doing calculations with the measurements by not rounding of the resulting values of the each step in the calculations. It would be recommendable to round off the value only at the final answer. Hope this helps.</span>
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An ate or ite at the end of a compound name usually indicates that the compound contains___________.
Ymorist [56]

Answer:

D

Explanation:

According to IUPAC nomenclature, a negative polyatomic ion has its name ending in 'ate' or 'ite'

As in carbonate (CO3^2-)

Arsenite (AsO3-)

3 0
2 years ago
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Chemistry student needs of 55g acetone for an experiment. by consulting the crc handbook of chemistry and physics, the student d
sergeinik [125]

Answer:

             70.15 cm³

Solution:

Data Given;

                  Mass  =  55 g

                  Density  =  0.784 g.cm⁻³

Required:

                  Volume  =  ?

Formula Used:

                  Density  =  Mass ÷ Volume

Solving for Volume,

                  Volume  =  Mass ÷ Density

Putting values,

                  Volume  =  55 g ÷ 0.784 g.cm⁻³

                  Volume = 70.15 cm³

5 0
3 years ago
A mixture of 454 kg of applesauce at 10 degrees Celsius is heated in a heat exchanger by adding 121300 kJ. Calculate the outlet
stira [4]

Explanation:

The given data is as follows.

           Mass of apple sauce mixture = 454 kg

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 Heat capacity (C_{p}) of apple sauce at 32.8^{o}C = 4.0177 kJ/kg^{o}C

So, Heat given by heat exchanger = heat taken by apple sauce

                            Q = mC_{p} \Delta T

or,                    Q = mC_{p} (T_{f} - T_{i})  

Putting the given values into the above formula as follows.

                     Q = mC_{p} (T_{f} - T_{i})  

              121300 kJ = 454 kg \times 4.0177 kJ/kg^{o}C \times (T_{f} - 10)

                      T_{f} = 76.5^{o}C

Thus, we can conclude that outlet temperature of the apple sauce is 76.5^{o}C.

3 0
3 years ago
The body gets rid of lactic acid in a chemical pathway that requires ___________. A. carbon dioxide . B. oxygen . C. amino acids
Luden [163]
The body gets rid of acid in a chemical pathway that requires oxygen. The correct answer is B, oxygen. 
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2 years ago
How to work out the rate of reaction in Chemistry
Arlecino [84]
One way you can work out the rate of reaction is by the amount of product that is produced to time. This can also be done with heat and time.

Hope this helps! :)
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