Answer:
1.Exhaust from farming machines pollutes the air
2.Cows give off methane gas that gets into the atmosphere
3.The land the farm was cleared away on effects other recosystems
Explanation:
Farming adversely affected the earth systems such as climate change, deforestation, biodiversity loss, irrigation problems, pollutants, soil degradation, and waste production.
How does farming affect or change Earth systems?Agriculture causes a number larger of environmental issues that cause environmental degradation such as climate change, deforestation, biodiversity loss, irrigation problems, pollutants, soil degradation, and waste production.
For example, exhaust from farming machines pollutes the air, Cows give off methane gas that gets into the atmosphere and the land the farm was cleared away on effects other ecosystems.
So we can conclude that farming adversely affected the earth systems such as climate change, deforestation, biodiversity loss, irrigation problems, pollutants, soil degradation, and waste production.
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Compare and contrast the characteristics of acids and bases. Give three
similarities and three differences. use COMPLETE SENTENCES for full points.
*
Answer:
Acid is a kind of chemical compound that when dissolved in water gives a solution with H+ ion activity more than purified water. A base is an aqueous substance that donates electrons, accept protons or release hydroxide (OH-) ions. An acid is a proton donor. While a base is a proton acceptor.
Explanation:
Hey mate, here's your answer...
Water cannot dissolve all substances that are made from ionic bonds. This is probably because
A.
Water needs to be stirred to dissolve all ionic substances
B.
Some ionic bonds are too strong for the attractions of water molecules to pull them apart
C.
Some water molecules are not as strong as others
Water cannot dissolve all substances that are made from ionic bonds probably because some ionic bonds are too strong for the attractions of water molecules to pull them apart.
WATER AS A UNIVERSAL SOLVENT:Water is a unique molecule often referred to as a universal solvent because it can dissolve almost all solutes. Water is capable of dissolving polar substances i.e. substances that have an unequal distribution of positive and negative ions.However, some ionic bonds formed from ions of elements are unable to be dissolved by water and this is probably attributed to the fact that those bonds are too strong to be pulled apart by water molecules.
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Gold is classified as what type of element?
5. A gas has a pressure of 310 kPa at 237 degrees C.
What will its pressure be at 23 degrees C?)
Answer:
The pressure of the gas at 23 C is 179.92 kPa.
Explanation:
Gay-Lussac's law indicates that, as long as the volume of the container containing the gas is constant, as the temperature increases, the gas molecules move faster. Then the number of collisions with the walls increases, that is, the pressure increases. That is, the pressure of the gas is directly proportional to its temperature.
In short, when there is a constant volume, as the temperature increases, the pressure of the gas increases. And when the temperature is decreased, the pressure of the gas decreases.
Gay-Lussac's law can be expressed mathematically as follows:
[tex]\frac{P}{T} =k[/tex]
Studying two states, one initial 1 and the other final 2, it is satisfied:
[tex]\frac{P1}{T1} =\frac{P2}{T2}[/tex]
In this case:
P1= 310 kPaT1= 237 C= 510 K (being 0 C= 273 K)P2= ?T2= 23 C= 296 KReplacing:
[tex]\frac{310 kPa}{510 K} =\frac{P2}{296 K}[/tex]
Solving:
[tex]P2=296 K*\frac{310 kPa}{510 K}[/tex]
P2= 179.92 kPa
The pressure of the gas at 23 C is 179.92 kPa.
Why are isotopes with short half-lives not useful for dating very old rocks?
-because not enough of the parent isotope remains to measure accurately
-because not enough of the daughter product has formed to be detectable
-because neither the parent isotope nor the daughter product will be detectable
-because very old rocks would never have contained these isotopes
Answer:
because not enough of the parent isotope remains to measure accurately. because not enough of the daughter product has formed to be detectable.
Explanation:
Hope it helps
The first asteroid to be discovered is Ceres. It is the largest and most massive asteroid is
our solar system’s asteroid belt, having an estimated mass of 3.0 x 1021 kg and an orbital
speed of 17900 m/s. Determine the amount of kinetic energy possessed by Ceres.
Answer:
kinetic energy possessed by Ceres = 4.806 × 10^(29) J
Explanation:
We are given;
Estimated mass; m = 3 × 10^(21) kg
Orbital speed; v = 17900 m/s
Formula for kinetic energy is;
K.E = ½mv²
K.E = ½ × 3 × 10^(21) × 17900²
K.E = 4.806 × 10^(29) J
Thus;
kinetic energy possessed by Ceres = 4.806 × 10^(29) J
How is a less-intense wave different from a more-intense wave?
Answer:
A less-intense wave will have fewer decibels than a more-intense wave.
Explanation:
sound is measured in units called decibels (dB). The higher the decibel level, the louder the noise. On the decibel scale, the level increase of 10 means that a sound is actually 10 times more intense, or powerful.
please help! science 10 acid and bases!
Complete and balance the following neutralization reactions.
(a) H,SOA + NaOH
(b) HNO3 + KOH
(c) HCl + Ca(OH)2
(d) H PO, + Ba(OH)2
() CH,COOH + NaOH
(1) HNO3 + Sr(OH)2
(g) HF + Fe(OH)3
(h) HBr + Sn(OH)4
Answer:
See explanation
Explanation:
Recall that a neutralization reaction is one in which an acid reacts with a base to yield salt and water only. The equation is only balanced when the number of each atom on the reactant side is the same as the number of the same atom on the product side.
Let us now complete and balance each reaction equation;
(a) H2SO4 + 2NaOH --------> Na2SO4 + 2H2O
(b) HNO3 + KOH ---------> KNO3 + H2O
(c) 2HCl + Ca(OH)2 -------> CaCl2 + 2H2O
(d) 2H3PO4 + 3Ba(OH)2 ------> Ba3(PO4)2 + 6H2O
() CH3COOH + NaOH --------> CH3COONa + H2O
(1) 2HNO3 + Sr(OH)2 --------->Sr(NO3)2 + 2H2O
(g) 3HF + Fe(OH)3 ------> FeF3 + 3H2O
(h) 4HBr + Sn(OH)4 --------> SnBr4 + 4H2O
What do these elements make:
neodymium, rhenium and sulfur
Answer:
Neodymium makes flints inside of lighters. It also takes away the green color off of glass. Rhenium is added with tungsten and molybdenum which makes filaments for lamps. Sulfur makes sulfuric acid which makes batteries and cleaners and can process ores.
Explanation:
An interesting fact for each element:
Neodymium is known for the atomic symbol Nd and the atomic number 60.
Rhenium is known for the atomic symbol Re and the atomic number 75.
Sulfur is known for the atomic symbol S and the atomic number 16.
I hope the Answer answers your question. I gave you some facts to remember those elements in the periodic table!
Neodymium(III) bromide, NdF3, neodymium(III) chloride, NdCl3, neodymium(III) bromide, NdBr3, and neodymium(III) iodide, NdI3, are the results of its reactions with fluorine, chlorine, bromine, and iodine.
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How many moles of mercury are equivalent to 3.46 x 1023 atoms?
Answer:
3.02 X1023 atoms Ag limol. - - 0.50 1 moles. 6.02241023 atoms.
What is the velocity of a wave with a frequency of 10 Hz and a wavelength of
2 m?
A. 0.2 m/s
B. 20 m/s
C. 5 m/s
D. 8 m/s
SUBMIT
Answer:
B. 20m/s
Explanation:
The wavelength of a wave can be calculated using the formula;
λ = v/f
Where;
λ = wavelength (m)
v = velocity (m/s)
f = frequency (Hz)
According to the information provided in this question; the wave has a wavelength (λ) of 2m and a frequency (f) of 10Hz.
Using λ = v/f
v = λ × f
v = 2 × 10
v = 20m/s.
WILL GIVE BRANLIEST!! EASY BUT I WAS TO LAZY TO LEARN!! WILL FOREVER BE GREATFUL!!! WILL GIVE BRANLIEST!! EASY BUT I WAS TO LAZY TO LEARN!! WILL FOREVER BE GREATFUL!!!
3. Which side of the chain should you count from when naming organic compounds?
A) Center
B) Right side
C) Side that will give you the longest Carbon chain
D) Left side
4. What is the pH of a solution with a pOH of 10?
A) 6
B) 14
C) 4
D) 10
Answer:
3. Which side of the chain should you count from when naming organic compounds?
C) Side that will give you the longest Carbon chain
4. What is the pH of a solution with a pOH of 10?
C) 4
pH + pOH = 14
pH + 10 = 14
pH = 14 - 10
pH = 4
-TheUnknownScientist
Which Chemical Reaction is balanced?
Answer:
A
Explanation:
The letter A is the correct answer
Find the density of an object that has a mass of 12.69 grams and a volume of 3.5cm3
Answer:
3.62 g/cm³
Explanation:
density = mass ÷ volume
Therefore, do 12.69 divided by 3.5
The unbalanced basic equation for the reaction in most airbags is NaN3 --> Na + N2.
A normal airbag needs about 67 liters of Nitrogen gas to fully inflate. (At STP: 1 mole of gas = 22.4 liters of that gas.) How many grams of reactant is needed to produce that amount of gas?
Answer:52!
Explanation:
8. Shanice made a list about alkali metals.
Alkali Metals
Jose one electron
are found in
group one
include elements
Li, Na, and K
ions will have a
negative one
charge
Shanice made a mistake on her list. Which
best describes the mistake Shanice made?
A. Alkali metals do not lose one electron,
they gain one electron
B. Alkali metals are not found in group one;
they are found in group two.
C. Alkali metals do not include elements Li.
Na, and K, they include Al, Si, and P.
D. Alkali metal ions will not have a negative
one charge; they will have a positive one
charge
Answer:
D. Alkali metal ions will not have a negative one charge; they will have a positive one charge
Explanation:
Alkali metals are a found towards the left hand side of the periodic table. The comprise of Li, Na, K, Rb, Cs and Fr.
They form univalent positive ions such as Cs^+, Na^+ etc. They do not form negative ions but give out one electron to form the sort of ions stated above. Recall that metals are electropositive in nature (donate electrons).
The mistake made by Shanice is to say that group 1 elements have a negative one charge.
Element X is a solid at room temperature.
It needs one electron per atom to gain the electronic structure of a noble gas.
It is the least reactive element in its group.
What is the element X?
1.At
2.Cs
3. F
4. Li
Answer:
Element X is Cs or cesium
Need some help on this.
20 pts and brainliest
If people had not extracted fossil fuels from Earth to use as energy, would this carbon be "cycling" within the global carbon cycle we have defined today?
Answer: The answer is YES. There would still be recycling of carbon even if it wasn't extracted as fossil fuels for energy use.
Explanation:
Carbon is an element in the periodic table with the atomic number of 12. It has 4 electrons on its outermost shell in the electronic configuration. These are valence electrons which are used to form bonds in a wide range of both organic and inorganic compounds, giving rise to simply molecules like carbondioxide.
CARBON CYCLE is a natural process through which carbon and it's compounds are kept fairly constant through recycling. They are found in fossils fuels such as oil, coal, and natural gas. When these fossil fuels are burnt and used as energy, carbon is released in form of carbondioxide. This is just one of the ways carbon is returned to the atmosphere. Other ways include:
--> respiration of plants and animals
--> decomposition of organic substances
--> action of dilute acids and heat on trioxocarbonates (V) and hydrogen trioxocarbonates (IV).
Carbon is then removed from the atmosphere through:
--> plants in photosynthesis
--> rain water as weak trioxocarbonate (IV) acid.
Therefore, there would still be recycling of carbon even if it wasn't extracted as fossil fuels for energy use because the burning of fossil fuels is not the only way carbon is returned to the atmosphere during carbon cycle.
Which environment is BEST for an organism that sleeps during the day and digs holes in the ground for shelter?
A
Name the Following Binary Ionic Compounds:
a. AgCl
b. ZnO
c. CaBr2
d. SrF2
Explanation:
a.Silver chloride
b.zinc Oxide
c.calcium Bromide
d.strontium difluoride
Using the information in the passage, rank the types of galaxies by their ability to form new stars, from most to least activity.
Answer:
The correct answer is number 2. Elliptical, Spiral, Irregular.
Explanation:
Unfortunately, you did not attach the passage. Without the passage, we do not know what its content is.
So we are going to answer this question with our own knowledge.
The types of galaxies by their ability to form new stars, from most to least activity are "Elliptical, Spiral, Irregular."
That is the way astronomers classify galaxies in scientific terms. These scientists consider that the smallest galaxies or dwarf galaxies have approximately 100 million stars. On the other hand, giant galaxies have billions or trillions of stars. That immense is our universe.
Scientists still studying the universe and the galaxies to understand the way galaxies are formed.
Which person do you agree with the most?
A Casey: The human population had been fairly constant throughout
Earth's history.
Allayna: Population size is increasing at a significant rate due to
advances in technology, medicine, and sanitation.
© Karl: Population size has been decreasing over time because people
are having fewer children.
URGENT PLS I NEED THIS OR I WILL FAIL AND HAVE TO DO SUMMER SCHOOL
Carbon monoxide gas and oxygen gas combine to form carbon dioxide
gas in the following equation:
2CO(g) + O2(g) → 2CO2(g)
The enthalpy value for gaseous carbon monoxide is -110.5, and gaseous
carbon dioxide is -393.5, calculate the enthalpy change (AH) for the
reaction.
Answer:
ΔHr = -566kJ/mol
Explanation:
Based on Hess's law, the ΔH of a reaction is the sum of the ΔH's of products times its coefficient subtracting the ΔH of reactants. For the reaction:
2CO(g) + O2(g) → 2CO2(g)
ΔH is:
ΔHr = 2*ΔH CO2 - (2ΔH CO + ΔH O2)
As ΔH CO2 = -393.5kJ/mol; ΔH CO = -110.5kJ/mol and ΔH O2 = 0kJ/mol
ΔHr = 2*-393.5kJ/mol - (2*-110.5kJ/mol)
ΔHr = -566kJ/molWILL GIVE BRAINLIEST
Calculate the number of moles of AL2O3 that are produced when 0.25 moles of fe is produced
2AL(s) + 3FeO(s)-----> 3Fe(s)+ Al2O3(s)
HELP ASAP 20 OR MORE POINTS!!!!
In Brian Greene's "A Physicist Explains Why Parallel Universes May Exist", what reason does Greene give for why he believes parallel universes may exist?
Question 1 options:
Worm holes make traveling between parallel universes possible.
There are only so many ways matter can arrange itself within that infinite universe.
He has seen a parallel universe himself.
Scientists have already proven the existence of parallel universes.
Answer:
B: There are only so many ways matter can arrange itself within that infinite universe.
The idea of a parallel universe was supported by Brian Greene on the basis that there are only so many ways matter can arrange itself within that infinite universe.
A parallel universeMatter is anything that has mass and occupy space. The universe as we know it is filled with matter. The theory of multiple universe holds that there could be another universe apart from this one that we know.
This theory was supported by Brian Greene on the basis that there are only so many ways matter can arrange itself within that infinite universe.
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What is a bengal cat mixed with to make it a hybrid
Answer:
A Bagel Cat
Explanation:
Answer:
the spotted Egyptian Mau, with the Asian leopard cat.
how many protons are in phosphorous
Answer:
There are 15 protons in phosphorous.
~Hoped this helped~
~Brainiliest?~
Which one of your body cells carries proteins that determine your blood type?
1) All of your cells
2)Skin cells
3) Red blood cells
4)White blood cells
what electrolyte is used in a lead storage battery?
A. hydrochloric acid
B. sulfuric acid
C. lead acetate
D. lead nitrate
Answer:
Hi ,
Answer :
Sulfuric acid