QUICK I NEED THAT A.S.A.P Great Sand Dunes National Park in Colorado is famous for its giant sand dunes. Sand dunes are landforms that are found in deserts and on beaches. Visitors to the park can surf down the dunes on sleds or boards.

After visiting the park with his family, Kerry decides to build a model of a sand dune. In addition to sand, what will he need to form the model?

A. ice
B. plants
C. water
D. wind

Answer:

0.15

Explanation:

The partial pressure of the carbon dioxide in the mixture is equal to 0.58 atm.

Dalton's law can be described as the total pressure of all gases exerted being equal to the sum of the partial pressures of every gas in the mixture of non-reacting gases.

The total pressure of  a gas mixture of gases can mathematically be defined as :

P (total) = P₁ + P₂ + P₃ + ......

Given, the total pressure of a gas mixture = Ptotal = 1.05 atm

The fraction of carbon dioxide in the mixture = 55 % = 0.55

The fraction of nitrogen in the mixture = 31 % = 0.31

The partial pressure of  carbon dioxide in the mixture can be calculated as:

P(CO₂) = 0.55× P(total)

P(CO₂) = 0.55× 1.05

P(CO₂) = 0.58 atm

Therefore, the partial pressure of the carbon dioxide in the mixture is equal to 0.58 atm.

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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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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.

Answer:

Hi ,

Answer :

Sulfuric acid

Answer:

Florida

Explanation:

Directly north of Cuba is the rural bar fight of a state, Florida

Answer:

Element X is Cs or cesium

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.

Matter 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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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.

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 probably because some ionic bonds are too strong for the attractions of water molecules to pull them apart.

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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Answer:

A Bagel Cat

Explanation:

Answer:

the spotted Egyptian Mau, with the Asian leopard cat.

Answer:

T(initial) = 241.4˚C

Explanation:

∑q = q(metal) + q(water) = 0*

Q(metal) = (m∙c∙ΔT)Fe = 360g x 0.444j/g˚C x (45.7˚C – T(initial)) = 159.84j/˚C(45.7˚C – T(initial)) = 7304.69 j – 159.84j/˚C x T(initial)

Q(water) =  (m∙c∙ΔT)water = 425g x 4.184j/g˚C x (45.7˚C - 24˚C) = 38,586.94 joules

∑[Q(metal) + Q(water)] = 7304.69j -159.84j/˚C x T(initial) + 38586.94j  = 0

=> 159.84 x T(initial)j/˚C = 38586.94j  

=> T(initial) = 38586.94j / 159.84j/˚C  = 241.4˚C

____________________________________

*Initial equation is from Heat Loss = Heat Gained  (Conservation of Energy) That is, Heat lost + (- Heat gained) = 0

=> ∑(heat loss by metal) + (- heat gained by water) = 0

using heat transfer equation with temperature change

=> mcΔT(metal) + (-mcΔT(water) = mcΔT(metal) - (mcΔT(water) = 0

Matter cannot be created or destroyed in chemical reactions. This is the law of conservation of mass. In every chemical reaction, the same mass of matter must end up in the products as started in the reactants. Balanced chemical equations show that mass is conserved in chemical reactions.

Matter cannot be created or destroyed in chemical reactions. This is the law of conservation of mass. In every chemical reaction, the same mass of matter must end up in the products as started in the reactants. Balanced chemical equations show that mass is conserved in chemical reactions

In a dry cell the electrolyte is a paste.

Minerals with an electric charge called electrolytes could be found in human blood and other bodily fluids. Electrolytes have a variety of effects on how your brains work, including how much water is in your body. The pH balance in the blood (pH) Our muscles work.

The dry-cell battery would be a gadget composed of one or even more electrochemical cells which change electrical energy from chemical energy that has been stored. It has an electrolyte inside of a paste or another moist substance. Zinc anode, as well as carbon cathode, are found inside a central rod of a standard dry cell battery.

Therefore, in a dry cell the electrolyte is a paste.

Hence, the correct answer will be option (B).

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Molar mass is the amount grams that one mole weighs.

Explanation: You need to find the molar mass of NaCl which is the same as the amu on the periodic table in grams. So it is 22.99(Na) + 35.45(Cl) = 58.44

You also know that for every mole of NaCl you have 1 mole of Na because every molecule of NaCl has 1 atom of Na.

Finally, using the periodic table, again, you see that the molar mass of Na is 22.99.

Then using stoichiometry, you can find the grams of sodium.

100(g NaCl) * 1 mol (NaCl)/58.44 g (NaCl) * 1 mol (Na)/ 1 mol (NaCl) * 22.99 (g of Na)/ 1 mol (Na)

which equals 39.339435 g of Na.

If you need to maintain significant figures the answer will be 40.

hope this helps

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

Answer:

Global warming is expected to cause changes in the amount of cloud cover, and the height and thickness of these clouds in the future, shifting the balance between the parasol and blanket effects of clouds. The knock-on effect this will have on temperature is known as cloud feedback

Explanation:

Global warming is expected to cause changes in the amount of cloud cover, and the height and thickness of these clouds in the future, shifting the balance between the parasol and blanket effects of clouds. The knock-on effect this will have on temperature is known as cloud feedback

Answer:

101.466000

Explanation:

N/A

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:

Replacing:

[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.

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

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)

Answer:

c. activated complex

Explanation:

Answer:

i really dont know because i dont have anything to look at to know that answer.

Answer: it is D

Explanation:

Scientists can model the effects of reactant concentration on the speed of a reaction With an atomic model. Hence, D is correct.

Atomic model, in physics, a model used to describe the structure and makeup of an atom. Atomic models have gone through many changes over time, evolving as necessary to fit experimental data. For a more in-depth discussion of the history of atomic models, see atom: development of atomic theory.

Scientists use models to study atoms because atoms are extremely small and can't even be seen. If atoms can't be seen, it's easier to study and predict what atoms will do with a representation of them.

Models are useful tools in learning science which can be used to improve explanations, generate discussion, make predictions, provide visual representations of abstract concepts and generate mental models.

Therefore, Scientists can model the effects of reactant concentration on the speed of a reaction With an atomic model. Hence, D is correct.

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