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SpyIntel [72]
3 years ago
12

Which of the following is an example of a pure substance?

Chemistry
1 answer:
jasenka [17]3 years ago
4 0
Aluminium is an element.
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a volumetric pipette haas an uncertainty of 0.01 cm what are the lowest and highest possible volumes for a measurement of 0.20cm
Vanyuwa [196]

Answer:

Possible lowest volume = 0.19 cm

Possible highest volume = 0.21 cm

Explanation:

Given Data

uncertainty  =  0.01 cm

total volume = 0.20 cm

Possible lowest volume = ?

Possible highest volume =  ?

Solution:

Possible lowest volume = total volume - uncertainty

Possible lowest volume = 0.20 cm - 0.01 cm

Possible lowest volume = 0.19 cm

Possible highest volume = total volume + uncertainty

Possible highest volume = 0.20 cm - 0.01 cm

Possible highest volume = 0.21 cm

5 0
3 years ago
Which of the following correctly describes an Arrhenius acid?
ValentinkaMS [17]

Answer:

D.

Explanation:

An Arrhenius acid is a compound that increases the H+ ion concentration in a water solution.

7 0
2 years ago
Which two rocks are primarily composed of a mineral that bubbles with acid?
Marianna [84]
To most geologists, the term "acid test" means placing a drop of dilute (5% to 10%) hydrochloric acid on a rock or mineral and watching for bubbles of carbon<span> dioxide gas to be released. The bubbles signal the presence of carbonate minerals such as</span>calcite<span>, </span>dolomite<span>, or one of the minerals listed in Table 1.</span>
8 0
3 years ago
How can the electromagnetic force be increased? What different things affect the magnetic strength?
irina [24]
The electromagnetic force is responsible for most of the interaction we see in our environment today. The EMF holds electrons in their orbit around the nucleus.




Factors that can affect a magnets strength include : heat, radiation, strong, electrical currents in close proximity of to the magnet
4 0
4 years ago
Carry out the following calculation, paying special attention to the significant figures (where 4/3 is exact), rounding, and uni
babunello [35]

Answer:

Value = 1.80 g/cm³ (Approx)

Explanation:

Given:

\frac{3.39 \times 10^7g}{(\frac{4}{3} )(3.1416)(1.65 \times 10^2 cm)^3}

Computation:

\frac{3.39 \times 10^7g}{(\frac{4}{3} )(3.1416)(1.65 \times 10^2 cm)^3} \\\\\frac{3.39 \times 10^7g}{(\frac{4}{3} )(3.1416)(4.492125 \times 10^6 cm^3)} \\\\ \frac{3.39 \times 10^7g}{(\frac{4}{3} )(3.1416)(4.492125 \times 10^6 cm^3)}\\\\ \frac{3.39 \times 10^7g}{18.8166132\times 10^6 cm^3} \\\\ 1.80159945g/cm^3

Value = 1.80 g/cm³ (Approx)

7 0
4 years ago
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