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Feliz [49]
3 years ago
10

Multiple Choice Identify the letter of the choice that best completes the statement or answers the question. Precision pertains

to all of the following except a. reproducibility of measurements. b. agreement among numerical values. c. sameness of measurements. d. closeness of a measurement to an accepted value.
Chemistry
2 answers:
Eduardwww [97]3 years ago
6 0
D.) closeness of a measurement to an accepted value
That is accuracy not precision.
malfutka [58]3 years ago
4 0

Answer:

closeness of a measurement to an accepted value.

Explanation:

Precision is when we are performing an experiment and taking multiple readings at the same time and we are getting the values close to each other or same. The experiment will be called as precised.

But if we are getting values of our experiment close to actual value or similar to actual value then the experiment will be accurate.

Thus reproducibility of measurements, agreement among numerical values and sameness of measurements are same and are associated with precision.

While closeness of a measurement to an accepted value pertains to accuracy.

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0.20 L of HNO3 is titrated to equivalence using 0.12 L of 0.2 M NaOH. What is the concentration of the HNO3?
AleksandrR [38]

M_{A}V_{A}=M_{B}V_{B}\\(0.20)(M_{A})=(0.12)(0.2)\\M_{A}=\frac{(0.12)(0.2)}{(0.20)}=\boxed{0.12 \text{ M}}

4 0
2 years ago
Which units express specific heat capacity?
mixer [17]

Answer : The correct option is \frac{J}{g^oC},\frac{J}{gK},\frac{cal}{g^oC},\frac{cal}{gK}.

Explanation :

Specific heat capacity : It is defined as the amount of heat required to raise the temperature of one gram of substance by one degree Celsius.

Formula used :

q=mc\Delta T\\c=\frac{q}{m\Delta T}

where,

q = heat required

m = Mass

c = specific heat capacity

\Delta T = change in temperature

The unit of heat are expressed in terms of Joules, calories.

The unit of temperature are expressed in terms of degree Celsius, kelvin.

It is expressed as \frac{J}{g^oC},\frac{J}{gK},\frac{cal}{g^oC},\frac{cal}{gK}.

5 0
3 years ago
Read 2 more answers
Which is krypton and why?​
ivanzaharov [21]

Answer:

B is krypton

Explanation:

Atomic radius increases when going down a group so Helium is smallest and radon is biggest.

7 0
2 years ago
Which of the following best describes the rock cycle?
DedPeter [7]

Answer:

D. The rock cycle is a series of processes in which one kind of rock is transformed into other kinds.

Explanation:

5 0
3 years ago
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If the reactants of a reaction have ab initial mass of 25 grams what is the mass of the product?
Studentka2010 [4]

Answer:

It remains the same

Explanation:

The law of conservation of mass states that in a chemical reaction, the total mass of reactants is equal to the total mass of products. For example, the mass of sodium plus the mass of chlorine that reacts with the sodium equals the mass of the product sodium chloride.

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