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BaLLatris [955]
3 years ago
11

Nancy and Hiyang are training for a race. They entered some of their training notes in a chart. Which information should be adde

d to the chart in order find out who ran a greater distance? the time spent running each day the reference point used each day the units used to measure distance each day the location used by the runners each day
Chemistry
2 answers:
Mnenie [13.5K]3 years ago
4 0

The information that should be added to the chart in order to find out who ran a greater distance is THE UNITS USED TO MEASURE DISTANCE EACH DAY.

In science, the use of units if very important and each record made must be accompany with relevant units that are appropriate for the measurement taken. If units are not used along with data, it will be very difficult to quantify the values that are recorded. Scientists all over the world use SI units in their works in order to ensure uniformity.

katen-ka-za [31]3 years ago
3 0

The information that should be added to the chart in order find out who ran a greater distance are the units used to measure distance each day

 

Since we are talking about distance, then it is just correct that the units that must be added to the chart should be the measurement of the distance. The formula for distance is d = st. By using this formula, then you can accurately find the distance based on the speed of the runner and the time it took for them to reach the distance allocated.

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4.5 moles -------- ?

4.5 * 6,02x10²³ / 1.0

= 2.709x10²⁴ molecules units
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Gala2k [10]
The answer is b. 5 units
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A beaker cannot be used for measuring the volume of a liquid because _____.
Ad libitum [116K]

Answer:

Data obtained can't be accurate.

Explanation:

A beaker can't be used for measuring the volume of a liquid because they did not calculate volume of a liquid accurately and precisely. The marks present on the beaker are not accurate, it is just an estimate so by measuring the volume of any liquid using beaker give us a false data so that's why beaker are not used for the measurement of a volume.

4 0
3 years ago
Determine the empirical formula of the following compound if a sample contains 0.104 molK, 0.052 molC, and 0.156 molO;?
faltersainse [42]

Answer:

K₂CO₃    

Explanation:

Given parameters:

Number of moles of K = 0.104mol

Number of moles of C = 0.052mol

Number of moles of O = 0.156mol

Method

From the given parameters, to calculate the empirical formula of the elements K, C and O, we reduce the given moles to the simplest fraction.

Empirical formula is the simplest formula of a compound and it differs from the molecular formula which is the actual formula of a compound.

  • Divide the given moles through by the smallest which is C, 0.052mol.
  • Then approximate values obtained to the nearest whole number of multiply by a factor to give a whole number ratio.
  • This is the empirical formula

Solution

Elements                             K                       C                    O

Number of moles            0.104                0.052            0.156

Dividing by the

smallest                       0.104/0.052     0.052/0.052  0.156/0.052

                                            2                           1                     3

The empirical formula is K₂CO₃      

3 0
3 years ago
Using a ph meter, you find the ph of an unknown solution to be 8. 0. How would you describe this solution?.
insens350 [35]

Answer:

Just Barely Base/Neutral

Explanation:

a pH of 8.0 is greater than Neutral (7.0) but is still neutral due to it being more neutral than a base

4 0
2 years ago
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