Explanation:
Substances with their density less than the density of water which is 1 g/cm³ will float on it whiles those greater than that of water will sink into the water.
From the question the density of the object is 0.8 g/cm³
Since it's density is less than that of water the object will float on water .
Hope this helps you
An object with a density of 0.8 g/cm3 will float in water because its density is less than the density of water, which is 1 g/cm3.
The question is asking whether an object with a density of 0.8 g/cm3 will float or sink in water. Floating and sinking are determined by the principle of buoyancy, which depends on the density of the object compared to the fluid (in this case, water) it is placed in.
Water has a density of 1 g/cm3. So, if the object's density is less than 1 g/cm3, it will float, if it's more it will sink. Since 0.8 g/cm3 is less than 1 g/cm3, an object with this density will float in water.
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b. dew
c. groundwater
d. surface runoff
Answer:
The answer is B. Dew Hopefully this helps!
To find the midpoint M of a line segment with endpoints Q(0,5) and R(2,1), you can use the midpoint formula:
Midpoint M = ((x₁ + x₂) / 2, (y₁ + y₂) / 2)
In this formula:
- (x₁, y₁) are the coordinates of the first endpoint (Q in this case).
- (x₂, y₂) are the coordinates of the second endpoint (R in this case).
Plug in the values:
M = ((0 + 2) / 2, (5 + 1) / 2)
M = (2 / 2, 6 / 2)
M = (1, 3)
So, the midpoint M of the line segment with endpoints Q(0,5) and R(2,1) is (1, 3).
Carbon is a naturally occurring element that can be obtained from various sources, both organic and inorganic. It is separated from other substances by Filtration, Distillation, and Chemical Reactions.
Carbon is the fourth-most abundant element in the universe and is a key component of all known life forms. Here are some common methods for obtaining and separating carbon from other substances:
Organic Sources: Carbon is a fundamental element in organic compounds, which are compounds containing carbon atoms bonded to hydrogen and other elements. Organic sources of carbon include:
Fossil Fuels: Coal, oil, and natural gas are rich in carbon. Carbon can be obtained from these sources through processes like combustion, pyrolysis, or gasification.
Biomass: Plant and animal matter, such as wood, leaves, and agricultural residues, contain carbon. Carbon can be extracted from biomass through processes like carbonization or fermentation.
Inorganic Sources: Carbon can also be obtained from various inorganic sources:
Carbonates: Minerals like limestone (calcium carbonate) and dolomite contain carbon in the form of carbonate ions. Carbonates can be thermally decomposed to release carbon dioxide gas, which can then be captured and processed.
Graphite and Diamond: These are naturally occurring forms of carbon. Graphite can be obtained from certain rocks and is used in various industrial applications. Diamonds, although much rarer, are another crystalline form of carbon.
Separation from Other Substances:
Filtration: If carbon is present in a solid mixture, it can be separated using filtration. A porous material (filter paper or a sieve) is used to separate solid carbon particles from other substances based on particle size.
Distillation: If carbon is mixed with liquids that have different boiling points, distillation can be used. The mixture is heated, and the component with the lower boiling point (liquid) vaporizes first, while carbon remains in the original container.
Chemical Reactions: Carbon can be separated from other substances through chemical reactions. For example, carbonates can be treated with acid to produce carbon dioxide gas, leaving behind other components.
To know more about Carbon here
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Answer:
Carbon products are obtained by heating coal (to give coke), natural gas (to give blacks), or carbonaceous material of vegetable or animal origin, such as wood or bone (to give charcoal), at elevated temperatures in the presence of insufficient oxygen to allow combustion.
Explanation:
a. How many moles of N2 are formed from 0.0250 moles of N2H4? (0.0250)
b. How many moles of H2O2 are required if 1.35 moles of H2O is to be produced? (0.675)
c. How many moles of H2O are formed if 1.87 moles of N2 is produced? (7.48)
Explanation:
The equation of the reaction is;
H2O2 + N2H4 → N2 + H2O
Upon balancing the reaction, we have;
N2H4 + 2H2O2 → N2 + 4H2O
a. How many moles of N2 are formed from 0.0250 moles of N2H4?
From the equation of the reaction;
1 mol of N2H4 produces 1 mol of N2
0.0250 mol of N2H4 would produce x mol of N2
1 = 1
0.0250 = x
x = 0.0250 * 1 / 1 = 0.0250 mol
b. How many moles of H2O2 are required if 1.35 moles of H2O is to be produced?
From the equation of the reaction;
2 mol of H2O2 produces 4 mol of H2O
x mol of H2O2 produces 1.35 mol of H2O
2 = 4
x = 1.35
x = 1.35 * 2 / 4 = 0.675 mol
c. How many moles of H2O are formed if 1.87 moles of N2 is produced?
The relationship between H2O produced and N2 is;
For every 1 mol of N2 produced, 4 mol of H2O is produced
1.87 mol of N2 produced, how many moles of H2O is produced?
1 = 4
1.87 = x
x = 1.87 * 4 / 1 = 7.48 mol