Answer:
question 1 i believe is c i will put the other answeres in comments
when i finish the test
Explanation:
The carbon cycle plays an important in maintaining carbon balance on the earth.
What is the carbon cycle?The carbon cycle is the cycle by which carbon is recycled between the atmosphere and the geosphere.
In the carbon cycle, the process of recycling carbon do not include deep burial, compaction, and cementation.
Volcanic eruptions are one natural way that carbon can move OUT of the geosphere.
Fossil fuels, atmosphere, land biomass and rocks are all carbon reservoirs, but fossil fuels contains the MOST carbon.
The atmosphere is the carbon reservoir that changes the quickest and has the biggest direct effect on climate.
Ocean acidification occurs because the ocean absorbs more human-produced CO2, causing the acidity to increase.
A potential impact of ocean acidification is that ocean ecosystems may suffer, making it harder for humans to get food from the ocean.
Therefore, the carbon cycle is important in maintaining carbon balance on the earth.
Learn more about carbon cycle at: https://brainly.com/question/25845923
the following punnett square shows a cross between two hybrid flowers. if the flowers show incomplete dominance, what fraction are pure red? I NEED HELP PLZ!
Answer:
1/4
Explanation:
Incomplete dominance is when the dominant ("R") gene is not completely dominant and cannot fully mask or cover the recessive ("r") gene. This means that it will result in both genes expressing and a mix of traits appearing. In the case of a flower with "R" genes for red and "r" genes for white, the following possibly combinations exist:
RR = all red, no white "r" gene
Rr = pink, as both the "R" and "r" genes are expressed
rr = white, no red "R" gene
The Punnett Square shows that only one of the four phenotypes is RR and red.
I have a chemistry writing promp but it’s asking questions here the prompt: What is the empirical formula if you have 36.84% nitrogen and 63.16% oxygen? State three potential molecular formulas from the empirical formula in A. If the molecular formula mass in A is 760 grams/mol, what is the molecular formula? WIll the molecular and empirical formulas in A and D have the same characteristics? Why or why not?
Explanation:
1. Find the empirical formula of a compound that has 36.84% of Nitrogen (N), 63.16% of Oxygen (O).
Secondly, Find molar mass of each component: N=14.0067, O=15.9994
Thirdly, convert to moles: N=2.6301698472874, O=3.9476480368014
Then find smallest mole value: 2.6301698472874
Divide all components my smallest value: N=1, O=1.5009099282591
Then divide by fractional component of each mole value: N=1.9963668986866, O=2.9963668986866
Round to closest whole numbers: N=2, O=3
Lastly, combine to get the empirical formula:N2O3
How can changing the reaction conditions influence the yield of a chemical reaction?
please explain in detail
Answer:
I found this on the web hope this helps.
Explanation:
Le Châtelier's Principle states that a change in pressure, temperature, or concentration will push the equilibrium to one side of the chemical equation. So, if you manipulate the conditions to favor the product side, you increase the yield and vice versa.
word equation for Na2O+H2O → NaOH
Answer:
Sodium oxide + Water - - - > Sodium Hydroxide.
बा
If OPPOSITE poles (N and S) of
a magnet are placed near
each other, what happens?
Type answer here
Answer:
They attract each other
Explanation:
A magnet has two poles;
North pole and south pole
When two opposite poles are placed close to each other, they attract each other. The short rule is opposite opes attract.
When two like poles are placed close to each other, they repel each other. The short rule is like poles repel.
I feel sad when all the flowers
Answer:
find happy things to think about, stay strong xx
Answer: sorry u feel sad. y u feel sad?
Explanation:
We can talk if u want..
a 2.7 L of N2 is collected at 121kpa and 288 K . if the pressure increases to 202 kpa and the temperature rises to 303 K , what volume will the gas occupy?
Answer:
The gas will occupy a volume of 1.702 liters.
Explanation:
Let suppose that the gas behaves ideally. The equation of state for ideal gas is:
[tex]P\cdot V = n\cdot R_{u}\cdot T[/tex] (1)
Where:
[tex]P[/tex] - Pressure, measured in kilopascals.
[tex]V[/tex] - Volume, measured in liters.
[tex]n[/tex] - Molar quantity, measured in moles.
[tex]T[/tex] - Temperature, measured in Kelvin.
[tex]R_{u}[/tex] - Ideal gas constant, measured in kilopascal-liters per mole-Kelvin.
We can simplify the equation by constructing the following relationship:
[tex]\frac{P_{1}\cdot V_{1}}{T_{1}} = \frac{P_{2}\cdot V_{2}}{T_{2}}[/tex] (2)
Where:
[tex]P_{1}[/tex], [tex]P_{2}[/tex] - Initial and final pressure, measured in kilopascals.
[tex]V_{1}[/tex], [tex]V_{2}[/tex] - Initial and final volume, measured in liters.
[tex]T_{1}[/tex], [tex]T_{2}[/tex] - Initial and final temperature, measured in Kelvin.
If we know that [tex]P_{1} = 121\,kPa[/tex], [tex]P_{2} = 202\,kPa[/tex], [tex]V_{1} = 2.7\,L[/tex], [tex]T_{1} = 288\,K[/tex] and [tex]T_{2} = 303\,K[/tex], the final volume of the gas is:
[tex]V_{2} = \left(\frac{T_{2}}{T_{1}} \right)\cdot \left(\frac{P_{1}}{P_{2}} \right)\cdot V_{1}[/tex]
[tex]V_{2} = 1.702\,L[/tex]
The gas will occupy a volume of 1.702 liters.
9. What does C12 (g) represents?
A. Chlorine ions
B. Chlorine liquid
C. Chlorine gas
D. Chlorine atom
Answer:
chlorine gas since it exists as a diatomic molecule
A 1500 N force gives an object an acceleration of 3 m/s2.
What is the mass of the object?
Answer:
500kg.
Explanation:
Newton's Second Law relates force, mass and acceleration to one another through the equation:
F = ma
We can rearrange this equation algebraically to solve for mass:
m = F/a
Substituting our known values for the variables, we get:
m = 1500N/3m/s2
So mass of the object is 500kg.
We know it's kg because Newtons (N) are a unit defined as 1 kg/m/s2, so m/s2 cancels out when we divide :)
Please help pretty please
Answer: Its is a field generated by any two objects touching each other.
OR
Answer: Its is a field generated by any object with any mass.
Explanation: I AM SOOOO SORRY if i get it wrong i pretty sure the first one is right i mean like My first ansewr i typed in......... :/ :/
A small cart with a mass of 3.0 kg is accelerated from rest and obtains a final velocity of 24 m/s, East in 8.0 s. If friction is neglected, what net force is applied.
a
24 N
b
8.0 N
c
72 N
d
9.0 N
Answer:
A.
Explanation:
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How many total atoms in 5 mg(NO3)2
Answer:
5 Mg (magnesium), 2 N (nitrogen), and 6 O (oxygen) -- total of 13 atoms
There are 45 as 1 mg(NO3)2 = 9 atoms.
How many moles of I2 are in 8.23 moles of NaI ?
Answer: 4.12
Explanation:
we know that the given mol is 8.23 mol and they are 2NaI and I2 so we will write the equation like this.
8.23mol NaI x 1mol of I2 ÷ 2molNaI = 4.115≅ 4.12 mol of I2
we placed NaI at the bottom to cancel out with the 8.23 mol of NaI
True or false: Equal but opposite forces pushing on the same object produce a net force of zero on the object.
Answer:
true.................
Answer:
the answer is true hope it helps
An atom will be neutral if which of the following are true of its arrangement of subatomic particles?
The number of its protons is equal to the number of its electrons
All of its electrons orbit its nucleus at exactly the same distance
The sum of the atom's protons and neutrons is greater than zero
The nucleus of the atom contains more neutrons than anything else
Identify 5 factors of weather
Answer:
"The five factors are: the latitude zone, the elevation of the land, topography (landforms), ocean currents and winds."
Explanation:
Answer:
The five factors that determine the weather of any land area are: the amount of solar energy received because of latitude; the area's elevation or proximity to mountains; nearness to large bodies of water and relative temperatures of land and water; the number of such storm systems as cyclones, hurricanes, and thunderstorms resulting from air-mass differences; and the distribution of air pressure over the land and nearest oceans, which produces varying wind and air mass patterns.
Explanation:
Freezing and thawing water can cause a rock to break down into smaller pieces. Which part of the rock cycle is this an example of?
melting
weathering
subsidence
deposition
Answer:
Deposition
Explanation:
It’s breaking down the rock :]
Answer:
deposition
Explanation:
Ap3x
Can anybody do this?
Answer:this should be c
Explanation:
Which statement best describes the effects chemicals may have on the
environment?
A. The effects of chemicals on the environment are easy to observe.
B. Some chemicals may help the environment.
C. All chemicals harm the environment.
D. Chemicals must be released in large amounts to affect the
environment.
Pleaseeee help pretty please
Answer:
A object made from iron .
Explanation:
How many grams of NaN3 are required to produce 283 L of nitrogen gas about the size of an automotive air bag, if the gas has a density of 1.25 g/L? Please answer ASAP
3.300
bc im right fgdfgdffffffffg
How many ions are in the following compounds?
a. (NH4)3PO4 =
b. NaCl =
Answer:
A- In (NH4)3PO4 there are four ions in total as three ions of NH₄ and is one ion of PO₄
2. Hydrocarbons consist of carbon and hydrogen. 5.7 g of a hydrocarbon contains 4.8 g of carbon.
If the relative molecular mass of the hydrocarbon is 114, determine its molecular formula.
Answer:
The molecular formula of the hydrocarbon compound is C₈H₁₈
Explanation:
The type of chemical substance in the question = Hydrocarbon
The mass of the hydrocarbon = 5.7 g
The mass of carbon in the given hydrocarbon (sample) = 4.8 g
The relative molecular mas of the hydrocarbon = 114 g
Therefore, the mass of hydrogen in the sample, H = 5.7 g - 4.8 g = 0.9 g
The ratio of the mass of carbon in the sample = 4.8/5.7
The ratio of the mass of hydrogen in the sample = 0.9/5.7
By the law of constant composition, we have;
The mass of carbon in a mole of the hydrocarbon = (4.8/5.7) × 114 g = 96 g
The molar mass of carbon, C = 12 g/mol
The number of moles of carbon in a mole of the hydrocarbon, 'n₁', is given as follows;
n₁ = 96 g/12 g = 8 moles
The mass of hydrogen in a mole of the hydrocarbon = (0.9/5.7) × 114 g = 18 g
The molar mass of hydrogen, H ≈ 1 g/mol
The number of moles of hydrogen in a mole of the hydrocarbon, 'n₂', is given as follows;
n₂ = 48 g/1 g = 18 moles
Therefore, in each each molecule of the compound, we have have 8 atoms of carbon, 'C', and 18 atoms of hydrogen, 'H'
Therefore, we get;
The molecular formula of the hydrocarbon compound is C₈H₁₈ which is the chemical formula for the hydrocarbon also known as octane
What temperature does neon condensate?
Answer and Explanation:
I believe −246.048 C or −411 F
what are the elements found in The human body?
The elements found in the human body would be the following:
1. hydrogen,
2. oxygen,
3. carbon
4. nitrogen
Explanation:They are found throughout your body, mostly as water but also as components of biomolecules such as proteins, fats, DNA, and carbohydrates.
Note to you:
Hope this helped and correct me if I am wrong, I did some outside research. Have a good one!
How many grams of Sulfur are there in 2.05 x 10^25 molecules of Calcium Sulfate?
Answer:
1090 grams Sulfur (3 sig-figs)
Explanation:
Given 2.05 x 10²⁵ molecules CaSO₄ => 2.05 x 10²⁵ Sulfur atoms (subscript = 1 mole).
Converting 2.05 x 10²⁵ sulfur atoms to moles, divide by Avogadro's Number
(= 6.023 x 10²³ sulfur atoms / mole sulfur) => 2.05 x 10²⁵ sulfur atoms/6.023 x 10²³ sulfur atoms/mole sulfur atoms = 34.036 moles sulfur atoms.
Converting 34.036 moles sulfur to grams sulfur multiply by formula wt. of sulfur (=32g/mole S)
=> 34.036moles S x 32g/mole S = 1089.158 grams S ≅ 1090 g S (3 sig-figs)
100 point and brainlist answer the question below
Answer:
a
Explanation:
because am pro
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1 Unit 3 Lab Part 1
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Answer:
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Please help! Is hot tea with lemon juice a heterogeneous, homogeneous, or pure substance? Will award brainliest!
Answer:
Homogeneous
Explanation:
Pure substances are untouched substances.
Homogeneous mixtures are in uniform.
Heterogeneous mixtures are un-uniform.
Nitrogen gas reacts with hydrogen gas to produce ammonia according to the following equation.
N2(g)+3H2(g) → 2NH3(g)
What is the mole of ammonia produced from 7.23 x 10−4 moles of the hydrogen reactant, assuming there is sufficient nitrogen to react?
7.23 x 10−47.23 x 10−4
8.42 x 10−38.42 x 10−3
4.82 x 10−44.82 x 10−4
4.83 x 10−3
Answer:
4.82 x 10^-4
Explanation:
7.23 x 10^-4 mol H2 l 2 mol NH3
------------------------------------------------------- =
l 3 mol H2
(7.23 x 10^-4) x 2 / 3 =
4.82 x 10^-4
Hope this helped! ;)
The mole of ammonia produced from 7.23 x 10⁻⁴ moles of the hydrogen reactant when there is sufficient nitrogen to react is 4.82×10⁻⁴.
What is moles?Moles is a unit which is used to estimate the amount of any substance and it is represented as:
n = W/M , where
W = given mass
M = molar mass
Given chemical reaction is:
N₂(g) + 3H₂(g) → 2NH₃(g)
In the question it is given that sufficient moles of N₂ is present, so the formation of product depends on the moles of H₂. From the stoichiometry of the reaction, it is clear that:
3 moles of H₂ = produce 2 moles of NH₃
7.23×10⁻⁴ moles of H₂ = produce 2/3 × 7.23×10⁻⁴=4.82×10⁻⁴ moles of NH₃
Hence, option (C) is correct i.e. 4.82×10⁻⁴.
To know more about moles, visit the below link:
https://brainly.com/question/1464305