Answer:
strongly acidic
Explanation:
Soils can be classified according to their pH value: 6.5 to 7.5—neutral. over 7.5—alkaline. less than 6.5—acidic, and soils with pH less than 5.5 are considered strongly acidic.
If your typing this I would recommend that you don't copy this word for word because of plagerism I dont want to be the source for that. You may alternate it and put it in your own words tho :)
Can someone please help me answer 3 and 5 and then make sure number 4 is correct?
About 2 aluminum cans are needed to make 1 mole of aluminum atoms.
What is 1 mole of aluminum?The mass in grams of one mole of Al atoms is numerically equal to the atomic mass of aluminum. According to the periodic table, the atomic mass of Al (rounded to the second decimal place) is 26.98, so 1 mol of Al atom has a mass of 26.98 g.Mass of 1 mole of aluminum atom = {13 × mass of each electron + 13 × mass of each proton + 14 × mass of each neutron} × Avogadro constant = 3 × mass of each electron × Avogadro's constant.A mole is the amount of matter (10) containing 6.02214 × 1023 particles. 1 mole = 6.02214 × 1023 particles. This number is also called Avogadro's number ...... Note that the definition of mole is the amount of substance.To know more about mole visit:.
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The plasma membrane is made up of molecules in two layers which we call the ________________.
The layers are made of molecules called __________________.
They have a _________ and ____________.
Which part of the molecule faces out towards the cytoplasm?________________________________
Explore (pg. 5)
How do molecules get inside and outside the cell?______________________ or ______________________
To bring something inside the cell, it is called________________________
To bring something outside the cell, it is called
________________________________________
Explore (pg. 6)
Two types of transport ___________________________ or ____________________________
Which one does not require energy?_________________________________
In the one that does not require energy, the move across a _______________________________________________________.
They move from _____________ concentration to _____________________ concentration.
The goal is to have the molecules _______________________ over time on both sides of the concentration gradient.
Answer:
The plasma membrane is made up of molecules in two layers which we call the phospholipid bilayer. The layers are made of molecules called phospholipids. They have a hydrophobic (water-fearing) tail and hydrophilic (water-loving) head.
Which part of the molecule faces out towards the cytoplasm? The hydrophobic tail
Explore (pg. 5)
How do molecules get inside and outside the cell? Active transport or passive transport
To bring something inside the cell, it is called endocytosis
To bring something outside the cell, it is called exocytosis
Explore (pg. 6)
Two types of transport: passive transport or active transport
Which one does not require energy? passive transport
In the one that does not require energy, the move across a concentration gradient.
They move from high concentration to low concentration.
The goal is to have the molecules evenly distributed over time on both sides of the concentration gradient.
Explanation:
Hey I think this the answer hope this helps you
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Answer:
see below
Explanation:
we need to write the formula of aluminium oxide . As we know that the valency of aluminium is 3 and that of oxygen is 2 , therefore we can find its formula by criss cross multiplication as ,
( see attachment)
[tex] Al_2 O_3[/tex]
__
Related info:
1 aluminium atom loses 3 electrons to attain octet configuration, so 2 aluminium atoms will lose 6 electrons. and one oxygen atom gains 2 e- to complete it's octet . So 3 oxygen atoms gain 6 e- from 2 aluminium atoms and form ionic bond.
4. A scuba tank has a pressure of 19,300 kPa and a volume of 10.3 L. What would be the pressure of the gas if it were transferred to a 50.0 L container?
A scuba tank has a pressure of 19,300 kPa and a volume of 10.3 L. 3975.8 kPa would be the pressure of the gas if it were transferred to a 50.0 L container.
What is Boyle's Law?Boyle's Law is a fundamental chemical principle that describes how a gas behaves when it is kept at a constant temperature. At a certain temperature, the volume of a gas is inversely proportionate to the pressure it exerts, according to Robert A. Boyle's 1662 discovery of this law. Boyle's law explains why pressure and volume for a gas at a certain temperature are always inversely related. Human breathing is subject to Boyle's law. According to Boyle's law, when the lungs expand, their volume and pressure change as a result (volume grows, pressure contracts). Since there is less pressure inside the body, air enters the lungs from the outside.
Given that,
Initial pressure (P₁) = 19,300 kPa
Final pressure (P₂) = ?
Initial volume (V₁) = 10.3 L
Final volume (V₂) = 50.0 L
Now, as we know
P₁V₁ = P₂V₂
19,300 × 10.3 = P₂ ×50.0
or, P₂ = 3975.8 kPa
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