Answer:
The answer to your question is 471.2 g
Explanation:
Data
moles of Cu(HCO₃)₂ = 2.54
mass of Cu(HCO₃)₂ = ?
Process
1.- Calculate the molar mass of Copper (II) bicarbonate
Cu(HCO₃)₂ = (1 x 63.5) + (2 x 1) + (2 x 12) + (6 x 16)
= 63.5 + 2 + 24 + 96
= 185.5 g
2.- Use proportions and cross multiplication to find the mass
185.5 g of Cu(HCO₃)₂ ------------- 1 mol
x ------------- 2.54 mol
x = (2.54 x 185.5) / 1
x = 471.2 g
Answer:
4.67M
Explanation:
The concentration of methanol (CH3OH) can be calculated using the following:
Molarity (M) = number of moles(n)/volume(v)
However, mole is not given. It can be obtained by using:
Mole = mass / molar mass
Where; mass = 34.4g
Molar mass (MM) of CH3OH is:
= 12 + 1(3) + 16 + 1
= 12 + 3 + 17
= 32g/mol
mole = 34.4/32
mole = 1.075mol
The volume needs to be converted to L by dividing by 1000
230mL = 230/1000
= 0.230L
Molarity = mol/volume
Molarity = 1.075/0.230
Molarity = 4.6739
Molarity = 4.67M
The concentration of CH3OH in solution is 4.67M
Answer:
Because when they brought the cows back the Autumn Buttercup began to thrive. They took the cows out of the pasture thinking that the Autumn Buttercup would grow better. They noticed that the Autumn Buttercup was thriving in a field nearby where there were cows grazing.
a.) When the cows ate the grass in the fields, it made the grass shorter that the mice couldn't live there and be safe from their predators.
b.) When the cows walk on the soggy ground it pushes up the soil on the sides of the cow print where the buttercup like to grow and not directly in the soggy soil.
Nature has been developing its habitats for thousands and thousands of years. In time there is a balance where there aren't too many plants and animals, but enough food for each. When there is a change in any habitat and something is taken out or introduces, then it changes the population of different species where it may deplet one type of species and let another type of species overpopulate. It can cause species to extinct. It will take nature hundredsof years to find balance again.
Explanation:
Moles of oxygen = mass/molar mass of O2 = 8/31.998 = 0.25 moles.
Number of particles = moles x 6.02 x 10^23 = 0.25 x 6.02 x 10^23 = 1.505 x 10^23 particles.
Hope this helps!
The typical bond angles (in degrees) in molecules with 4 electron groups will be <u>109.5 degrees</u>.
The angle that exists among two covalent bonds that come from the same atom is known as a bond angle.
When there have four bonds and no lone pairs, the tetrahedral geometry occurs. Given that many molecules would adopt this geometry, it represents one of the most significant and prevalent geometries. For example, assumes a tetrahedral geometry. Tetrahedral molecules have a bond angle of around 109.5°.
Therefore, The typical bond angles (in degrees) in molecules with 4 electron groups will be <u>109.5 degrees</u>.
To know more about bond angles
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