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Trava [24]
2 years ago
14

Wy do rough, uneven pebbles become smooth and rounded

Chemistry
1 answer:
NeTakaya2 years ago
4 0

Answer:

Due to erosion

Explanation:

When a pebble breaks off from a greater piece it is rough. After being weathered down and constantly hit against by other masses, the side will wear down and smoothen out

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Arterial blood contains about 0.25 g of oxygen per liter at 37°C and standard atmospheric pressure. Under these conditions, the
Olin [163]

Firstly we need to determine the partial pressure of O2:

\begin{gathered} P_{O_2}=X\times P_T \\ P_{O_2}:partial\text{ }pressure \\ X:mole\text{ }fraction \\ P_T:total\text{ }pressure \\  \\ P_{O_2}=0.209\times0.35\text{ }atm \\ P_{O_2}=0.073\text{ }atm \end{gathered}

We will now use the Henry's Law equation to determine the solubility of the gas:

\begin{gathered} c=K_H\times P_{O_2} \\ c:solubility\text{ }or\text{ }concentration\text{ }of\text{ }the\text{ }gas(M) \\ K_H:Henry^{\prime}sLawconstant=3.7\times10^{-2}M\text{ }atm^{-1} \\ P_{O_2}:partial\text{ }pressure\text{ }of\text{ }the\text{ }gas=0.073atm \\  \\ c=3.7\times10^{-2}M\text{ }atm^{-1}\times0.073 \\ c=2.7\times10^{-3}M \end{gathered}

Answer: Solubility is 2.7x10^-3 M

6 0
1 year ago
Plz give me short note on isotopes in agriculture industries and medicine
Mumz [18]

Uses of isotopes:

In agriculture,

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In medicine,

Iodine -131 is used in the treatment of

goiter

8 0
3 years ago
1. During an endothermic chemical reaction, a gas is consumed and a liquid produced.
tino4ka555 [31]
1. No
2.No
I hope this helps:)
8 0
3 years ago
Mass=1.01 kg; volume =1000cm3
guajiro [1.7K]

Density = 1.01 g/cm^3 or 1.01 kg/dm^3 or 1010 kg/m^3

Density = mass/volume = 1010 g/1000 cm^3 = 1.01 g/cm^3 = 1.01 kg/dm^3

= 1010 kg/m^3


7 0
3 years ago
The chart below shows examples of solids, liquids, gases, and plasma.
spin [16.1K]
The word that is in an incorrect place in the chart is HAIL.
The state of matter of hail is not plasma; hail is a solid at room temperature. Plasma refers to the state of matter in which an ionized gas have approximately equal number of positively and negatively charged ions. Thus, plasma is an ionized gas. Plasma is considered to be the fourth state of matter.  <span />
4 0
3 years ago
Read 2 more answers
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