Answer: d.
all of the above
Explanation:
A river load can be define as the debris or sediments carried away by the stream of river water. The materials which are translocated includes the rocks, stones and other large particles. Generally, the finer particles floats over the water surface. River slope, shape of the stream bed and volume of flow of water all are the factors which can affect the river load.
River slope will cause the erosion of surface materials by using water. Shape of the stream bed is also a factor this is because of the fact that the wider the surface covered by water more erosion can be caused. If the volume of water flowing in the stream is high the water will take away the particles by causing friction over the surface.
b. a substance that's composed of atoms
c. the force that holds together the elements in a compound
d. the attraction of two atoms that holds the atoms togethe?
Answer: -
A chemical bond is
C) the force that holds together the elements in a compound.
Explanation: -
A chemical bond results when there is a transfer of electrons from 1 element to another or there is a sharing of electrons between two element atoms.
Due to this compounds are formed.
Hence A chemical bond is
C) the force that holds together the elements in a compound.
the correct answer should be c.
Answer:
Freezing T° of solution = - 48.12°C
Explanation:
The colligative which has to be used for this case is the freezing point depresison ( ΔT = Kf . m )
ΔT = Freezing T° of solvent - Freezing T° of solution
Kf = Crysocopic constant
m = molality (mol/kg)
We determine the molality (moles of solute in 1kg of solvent)
We convert the mass of CCl₄ from g to kg → 500 g . 1kg / 1000g = 0.5kg
0.42 mol of hexane / 0.5 kg of CCl₄ = 0.84 mol/kg
Let's replace data: -22.92°C - Freezing T° of solution = 30°C/m . 0.84 m
Freezing T° of solution = - ( 30°C/m . 0.84 m + 22.92°C) → - 48.12°C
Which is a base-conjugate acid pair?
NH3 and CIO3-
NH3 and NH4+
HCIO3 and NH3
HCIO3 and NH4+
The example of base-conjugate acid pair is B. NH3 and NH4+.
A base-conjugate acid pair simply means a pair that consist of two substances that only differ by the presence of a proton (H+).
In this case, the example of base-conjugate acid pair is NH3 and NH4+ because bNH4+ is the conjugate acid of the base NH3.
Learn more about acid on:
Answer:
NH3 and NH4+
Explanation:
NH4+ is the conjugate acid of the base NH3.
water?
Answer:
12 moles H2O
Explanation:
Your tools of choice for stoichiometry problems will always be the mole ratios that exist between the chemical species that take part in the reaction.
As you know, the stoichiometric coefficients attributed to each compound in the balanced chemical equation can be thought of as moles of reactants needed or moles of products formed in the reaction.
In your case, the balanced chemical equation for this synthesis reaction looks like this
2H2(g]+O 2(g]→2H2O(l]]
Notice that the reaction requires
2
moles of hydrogen gas and
1
mole of oxygen gas to produce
2
moles of water.
This tells you that the reaction produces twice as many moles of water as you have moles of oxygen gas that take part in the reaction.
You know that your reaction uses
6.0
moles of oxygen. Assuming that hydrogen gas is not a limiting reagent, you can say that the reaction will produce
6.0
moles O
2⋅2
moles H
2O1
moles O
2=
12 moles H2O