Why should you keep the thermometer in the middle of a jar of water when you are taking the temperature. Why should you not put the thermometer in at the side?
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Hopethis helps
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A meter is an SI unit. Which quantity might you measure in meters?A. temperatureB. massC. lengthD. electric current
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Why do we put these three words together in the 'fire triangle'?
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Hardness, lustre, and colour.
Explanation:
These Rocks shown in photographs are made of different types of minerals which have properties as follows:
●The color of the rock is grey, brown and yellow after it is ground into a powder its color is streak.
● The lustre of the rock tells how shiny the rocks are.
● Other properties include hardness, texture, shape, and size.
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If the candle was placed in a large, sealed jar that allowed it to burn for several minutes before running out of oxygen. The candle and jar are balanced by an equal weight. In this situation, the side with the lit candle would rise because the heat collects on the top of the jar and starts to make the jar lighter by carrying some of the wait, whether it be a little or a lot.
The side where the candle lit would rise due to accumulation of heat from burning of candle.
When the candle was placed in a large, sealed jar and allowed it to burn for several minutes before running out of oxygen, the heat accumulates at the upper part of the jar and as a result the warm air puts pressure on the jar.
If the gas pressure is larger than the weight of the jar. the jar will be lifted by the air otherwise it will remain the same so we can conclude that the motion of jar occurs due to the burning of candle which produces the air.
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Answer:
1981.38L
Explanation:
P=29.8atm;
T=273+99.9=372.9⁰K
V=90.82L
P₀=1atm
T₀=273⁰K
V₀-?
PV/T=P₀V₀/T₀
V₀=PVT₀/P₀T=
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In this case, you will have
46
Ti → ma ≈ 46 u
47
Ti →ma≈47 u
48
Ti →ma≈48 u
49
Ti →ma≈49 u
50
Ti →ma≈50 u
Now, the average atomic mass of titanium is calculated by taking the weighted average of the atomic masses of its stable isotopes.
Simply put, each isotope
i
will contribute to the average atomic mass of the element in proportion to its decimal abundance, which is simply the percent abundance divided by
100
The decimal abundances for these five isotopes will be
46
Ti:
8.0/100= 0.080
47
Ti: 7.8/100=0.078
48
Ti: 73.4/100 =0.734
49
Ti: 5.5/100=0.055
50
Ti: 5.3/100=0.053
The average atomic mass of titanium will thus be avg. atomic mass =46 u ×0.080+47 u ×0.078
+48 u ×0.734+49 u × 0.055 + 50 u × 0.053
avg. atomic mass
= 47.923 u
B
U
T-
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Answer: 1.5
Explanation:
The acid, HCIO4 ionizes to give hydrogen ion (H+) and a conjugate base as follows:
HCIO4(aq) <---> H+(aq) + CIO4-(aq)
Hence, the H+ has also have a concentration of 0.0282 M
Mathematically, pH is expressed as:
pH = -log(H+), where H+ is the concentration of hydrogen ion.
So, for HCIO4
pH = - log (0.0282 M)
pH = - (-1.5497) (The two minus signs will cancel out)
pH = 1.5497
Round the pH value to the nearest tenth as 1.5
Thus, the pH of 0.0282 M of HCIO4 is 1.5, also HCIO4 is strongly acidic since pH values less than 7 are regarded as acidic.
currents in the earth’s liquid-metal outer core
B.
the mineral composition of the earth’s crust
C.
molten material in the mantle
D.
magnetic particles located at the earth’s poles
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Hope this helps!