Please help!! Need asap due at 11:59

Please Help!! Need Asap Due At 11:59

Answers

Answer 1

There are more than 118 naturally occurring elements.Seventy five percent of the universe is Carbon .The earths's crust and human body are made of different elements.But Carbon is an element which is abundant in both.Most objects are made of Carbon with approximately one million Compounds known and over being developed and discovered every year.


Related Questions

What is missing from the solubility graph shown on the right? A graph with temperature in degrees Celsius ranging from 0 to 100 in units of 20 on the horizontal axis and unidentified tick marks from 0 to 300 in increments of 50 on the vertical axis. An orange line curves upward from 0, 90 through 50, 125 to 100, 245.

Answers

Answer:

graph title, label for the y axis, and legend explaining the orange and blue colors

Explanation:

is RbCl soluble or insoluble in water

Answers

Answer:

Rubidium Chloride is an excellent water soluble crystalline Rubidium source for uses compatible with chlorides.

Compound Formula: ClRb

Melting Point: 715 °C

Boiling Point: 1,390 °C

Explanation:

Explain the process of photosynthesis in a well-written paragraph containing complete sentences. Use all of the following words:
xylem
phloem
carbon dioxide
stomata
sunlight
water
oxygen
sugar

Answers

Answer:

Photosynthesis is the process takes place in green plants in which the plants convert the carbon dioxide and water into the sugar molecule and oxygen in presence of the sunlight. The sunlight is trapped by the chlorophyll pigment, carbon dioxide uptake is facilitated by the stomata present on the leaves in the epidermis.

The water moves from the roots to the leaves and stem where it is used for photosynthesis and transpiration. The movement of water is through the xylem and sugar is move through the phloem from the leaves to a different part of the plant for nutrition and further process.

72.2% of element X is mass number 85. 27.8% is mass number
87. What is the average atomic mass of element X? (Round to
the correct number of significant figures.)

Answers

Answer:

11

Explanation:

An eraser is an example of —

Group of answer choices

an insulator

a closed circuit

a conductor

an open circuit

Answers

Answer:

Insulator

Explanation:

An eraser can't conduct electricity, which makes it an insulator.

A gas bubble occupies 14.0 mL, what is this volume into L?

Answers

The answer is 0.014 liters

There are 1000mL in a liter, so you divide 14 by 1000 to find the number of liters

Please help me out ........

Answers

Answer:c

Explanation:

7. Cells often store materials like water, salts, proteins and carbohydrates in sac-like structures called A. Chloroplasts. B. Lysosomes. C. Mitochondria. D. Vacuoles.

Answers

Answer:

A

Explanation:

the chloroplast holds the water , nutrients

Answer:

[tex]\boxed {\boxed {\sf D. \ Vacuoles}}[/tex]

Explanation:

First, let's examine each answer choice.

A. Chloroplasts

These structures are only found in plant cells. They are the site of photosynthesis: the process that turns water, carbon dioxide, and light energy into glucose and oxygen.

B. Lysosomes

These help remove and break down cellular waste. They contain special enzymes that allow them to digest certain molecules, bacteria, and old parts of the cell.

C. Mitochondria

These are famously known as the powerhouse of the cell. They create energy from glucose and oxygen in a process called cellular respiration.

D. Vacuoles

Vacuoles are sacs that store substances, including water, nutrients, and waste.

Since the question asks us to pick the sac-like structures that store materials in cells, choice D: vacuoles is correct.

HELP!!! WILL GIVE BRAINLYEST!!!!!! Record the Gas concentration associated with each of these time periods. (Note: ppm= parts per million)

Answers

Answer:

Explanation:

u need to go to the Greenhouse Effect Simulation (link is in ur Q).

open it and select the Greenhouse effect tab.  Note that the concentration of various atmospheric gases during past eras can be determined by looking at gases trapped in ancient ice, such as that found in Antarctica.

On the right hand side panel of the simulation, under “Atmosphere during,” you can select Today, 1750, and Ice Age as historic time periods.

run simulations n collect the gas composition data.

Answer:

Explanation:

The question provides a link to the Greenhouse Effect Simulation. Results are from that:

Time Period         H2O %RH     CO2 ppm      CH4 ppm           N2O ppm

Today 58F            70%                338ppm       1843ppm             0.317ppm

1750 58F              70%                 280ppm      0.730ppm            0.270ppm

Ice Age 36F          ?                      180ppm       380ppm               0.215ppm

which of the following would remain a liquid longest as the temperature continues to drop? propane, octane, hexane, ethane

Answers

Propane is the correct answer

HELP PLEASE!!!!! 10 POINTS
What does the third quantum number (ml) describe?

Answers

Answer:

A. The specific orbital within a sublevel

Explanation:

the third quantum number is also called the magnetic quantum number ([tex]m_{l}[/tex]) and it represents the number of orbitals within a subshell.

THIS IS A THREE PART QUESTION IF YOU CAN HELP IT WOULD BE REALLY APPRECIATED SO I DONT FAIL.

1. If I add 2.65L of water to 245 grams of sodium acetate, what is the molarity of the NaC2H3O2 solution?
A. 10.8 m
B. 1.13 m
C. 1.08 m
D. 92.4 m

2. If I add 2.65 L of water to 245 grams of sodium acetate, what is the % by mass of NaC2H3O2 in this solution?
A. 8.46%
B.1.12%
C.10.8%
D.9.25%

3. If I add 2.65 L of water to 245 grams of sodium acetate, what is the mol fraction of NaC2H3O2 in this solution?
A. 0.203
B. 0.0846
C. 0.108
D. 0.0199

Answers

Answer:

1. B = 1.13M

2. A. 8.46%

3. D = 0.0199

Explanation:

1. Molarity of a a solution = number of moles of solute/ volume of solution in L

Number of moles of solute = mass of solute/molar mass of solute

Molar mass of NaC₂H₃O₂ = 82 g/mol, mass of NaC₂H₃O₂ = 245 g

Number of moles of NaC₂H₃O₂ = 245 g / 82 g/mol = 2.988 moles

Molarity of solution = 2.988 mols/ 2.65 L = 1.13 M

2. Percentage by mass of a substance = mass of substance /mass of solution × 100%

Mass of 2.65 L of water = density × volume

Density of water = 1 Kg/L = 1000 g/L; volume of waterb= 2.65 L

Mass of water = 1000 g/L × 2.65 L = 2650 g

Mass of solution = mass of water + mass of solute = 245 + 2650 =2895 g

Percentage by mass of NaC₂H₃O₂ = 245/2895 × 100% = 8.46%

3. Mole fraction of NaC₂H₃O₂ = moles of NaC₂H₃O₂/moles of solution

Moles of water = mass /molar mass

Mass of water = 2650 g; molar mass of water = 18 g/mol

Moles of water = 2650 g / 18 g/mol = 147.222 moles

Moles of solution = moles of solute + moles of water = 147.222 + 2.988 = 150.21

Moles of NaC₂H₃O₂ =2.988 moles

Moles fraction of NaC₂H₃O₂ =2.988/150.21 = 0.0199

1.
If the hydrogen ion concentration of a solution is 1.30 x 10*M
What is the pH of the solution?

Answers

Answer:

h

Explanation:

gy

Which statement is correct?

Natural processes happen spontaneously when they decrease the entropy of a system because entropy increase is counteracted by the flow of enthalpy from high temperatures to low temperatures.
Among solids, liquids, and gases, solids generally have the highest entropy because solid particles are the least mobile, and entropy is inversely related to mobility of particles.
Any change that increases the number of particles in a system increases entropy because it increases the randomness and disorder of the system.
Dissolving table salt (NaCl) in water leads to a decrease in entropy because salt particles, which are numerous individual crystals in solid form, become a homogenous solution in water.

Answers


Among solids, liquids, and gases, solids generally have the highest entropy because solid particles are the least mobile, and entropy is inversely related to mobility of particles.

Answer:

Any change that increases the number of particles in a system increases entropy because it increases the randomness and disorder of the system.

Explanation:

Imagine dropping a glass pitcher on a hard surface. The pitcher breaks into numerous shards. If the shards were collected and dropped again, they would tend to break into smaller shards; they would not reassemble themselves into a pitcher. In the universe, there is a tendency for order to be replaced with disorder. This tendency is related to a concept called entropy. The formal definition of entropy is a measure of the degree of randomness and disorder in a system.

HELP ASAP 10 POINTS

What type of interference caused a "super crest" to form during Young's experiment?




Constructive interference



Doppler interference



Destructive interference



Operational Interference

Answers

Answer:

the answer is destructive interference

If 50 milliliters of 0.50 M HCl is used to completely neutralize 25 milliliters of KOH solution, what is the molarity of the base?

Answers

Answer:

0.25 M

Explanation:

What molecules are affected by injury to the pancreas?

Answers

Answer:

Causative/sensitizing factors of pancreatic injury include refluxed bile acids, alcohol, and pH. They largely mediate downstream events such as elevated intracellular Ca2+ via influx through TRPC3 channels and release from IP3 and ryanodine-sensitive Ca2+ stores.

Explanation:

Argon has a pressure of 34.6 atm. It is transferred to a new tank with a volume of 456 L and pressure of 2.94 atm. What was the volume of the original container?

Answers

Answer:

38.75 L

Explanation:

From the question,

Applying Boyles Law,

PV = P'V'....................... Equation 1

Where P = Original pressure of the Argon gas, V = Original Volume of Argon gas, P' = Final pressure of Argon gas, V' =  Final Volume of Argon gas.

make V the subject of the equation

V = P'V'/P.................... Equation 2

Given: P = 34.6 atm, V' = 456 L, P' = 2.94 atm.

Substitute these values into equation 2

V = (456×2.94)/34.6

V = 38.75 L

HELP PLEASE
an unknown gas has a pressure of 121.6 kPa, a volume of 31 L and a Temperature of 256K. How many moles of gas
are there?

Answers

Answer:

0.031moles

Explanation:

ok so it would help if I knew the marks but 1 mole = 1000L so if the volume was 31L then if you convert you will get that answer

The moles of gas at the given sample of gas is 1.7 moles.

What is ideal gas equation?

Ideal gas equation gives idea about the behavior of gas at different condition & represented as:

PV = nRT, where

P = pressure = 121.6 kPa = 1.2 atmV = volume = 31 Ln = moles = ?R = universal gas constant = 0.082 L.atm / K.molT = temperature = 256K

On putting all these values, we get moles as:

n = (1.2)(31) / (0.082)(256) = 37.2 / 20.9

n = 1.7 moles

Hence required moles of gas is 1.7 mole.

To know more about ideal gas equation, visit the below link:

https://brainly.com/question/555495

#SPJ2

give a reason why it is not advisable to heat magnesium before heating ammonium nitrate​

Answers

Answer:

it can result in an increasing risk of the accumulation of decomposition products, self-heating (from the heat released by the slow decomposition reactions)

Magnesium can result in an increased risk of the accumulation of decomposition products, self-heating (from the heat released by the slow decomposition reactions)

What is ammonium nitrate​?

Ammonium nitrate is used commonly in fertilizers; in pyrotechniques, herbicides, and insecticides; and in the manufacture of nitrous oxide.

When ammonium nitrate is heated, it decomposes exothermically into nitrous oxide and water.

Hence, Magnesium can result in an increased risk of the accumulation of decomposition products, self-heating (from the heat released by the slow decomposition reactions)

Learn more about ammonium nitrate​ here:

https://brainly.com/question/5148461

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According to kinetic molecular theory, collisions between gas particles in a sample of an ideal gas 1. increase the energy content of the gas sample 2. produce strong attractive forces between the gas particles 3. result in a net loss of energy by the gas sample 4. transfer energy between the gas particles​

Answers

Answer:

should you prove this or explain or pick the correct answer

According to the kinetic molecular theory, collisions between gas particles in a sample of an ideal gas: Transfer energy between the gas particles. Hence, option 4 is correct.

What is kinetic theory of gases ?

According to kinetic theory of gases, when gas particles collide with each other, they transfer energy between themselves. Some collisions will result in the transfer of kinetic energy from one particle to another, while others may result in a transfer of potential energy due to the intermolecular forces between the particles.

However, the total energy of the gas particles is conserved during these collisions, so there is no net loss or gain of energy by the gas sample as a whole.

The kinetic molecular theory also states that ideal gas particles do not have any significant attractive or repulsive forces between them, so option 2 is incorrect.

Additionally, collisions between gas particles do not increase the energy content of the gas sample (option 1) or result in a net loss of energy by the gas sample (option 3).

Find more on kinetic theory:

https://brainly.com/question/14349214

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How many moles of C6H12O6 does 8.2 x 1023 molecules represent

Answers

Answer:

i.e. mass of 1 mole of glucose, C6H12O6 = (6 × 12.01 + 12 × 1.01 + 6 × 16.00) g = 180.18 g (using atomic weight data to 2 decimals) 1 mole of carbon atoms weighs 12.01 g and there are 6 moles of C atoms in 1 mole of glucose, so the mass of carbon in 1 mole of glucose = 6 × 12.01 g = 72.06 g.

Explain why a change to the green-leaf population caused the wee-bug population to change in size?

Answers

Answer:

If there are fewer births than deaths, then the size of the population will decrease. Organisms in consumer populations get energy storage molecules from eating organisms in resource populations. The more energy storage molecules available to a population, the more the organisms in that population can reproduce.

A change to the green-leaf population caused the wee-bug population to change in size because wee-bug depends upon green leaves for their food.

What is the population?

It is a group of organism of the same species living in a particular area.

The increase or decrease in the population of organisms depends upon factors such as available resources and predator population.

The green leaf is the food resource for wee bugs hence if the green leaf population increase then the wee bug's population will also be increased.

Therefore, a change to the green-leaf population caused the wee-bug population to change in size because wee-bug depends upon green leaves for their food.

Learn more about the population?

https://brainly.com/question/7979871

plss help me in this question

Answers

Answer:

[tex]m_{CO_2}=0.88g[/tex]

Explanation:

Hello there!

In this case, since we are talking about a decomposition reaction whereby calcium carbonate is decomposed to calcium oxide and carbon dioxide according to the following chemical equation:

[tex]CaCO_3\rightarrow CaO+CO_2[/tex]

Next, we must recall the law of conservation of mass which states that matter cannot be neither created nor destroyed so the mass of calcium carbonate equal the addition of the mass of both calcium oxide and carbon dioxide:

[tex]m_{CaCO_3}=m_{CaO}+m_{CO_2}[/tex]

Which must be solved for the mass of carbon dioxide as we are given those of calcium carbonate and calcium oxide:

[tex]m_{CO_2}=m_{CaCO_3}-m_{CaO}\\\\m_{CO_2}=2.00g-1.12g\\\\m_{CO_2}=0.88g[/tex]

Best regards!

+
What category would the following amino acids be placed in and are they in the Lord
configuration? (2 marks)
COO-
A)
COO-
B)
H2N-C-H
H-C-NH3
CH2
CH2
OH​

Answers

omg why is it cooing at me

can you guys help me :) ?
winner takes all​

Answers

Answer:

1. Ag2CO3

2.Ba3(PO4)2

3. Cu(OH)2

4. AL

Explanation:

Please help me find the answer , thank you.

Answers

Answer:

the answeer is definitely silicon.

Which of the following elements has the largest atomic number?


O tellurium (Te)
lodine (0)
Otin (5)
O antimoney (5b)

Answers

tellurium is the correct answer

Answer:

iodine is 53

tellurium is 52

antimony is 51

Otin Is 50

Explanation:

In any engineering design problem, the first step is to understand the problem and identify one or more possible solutions. In this task, you’ll analyze the problems you face as the chemical engineer challenged with setting up the ammonia-making process. Recall the chemical equation for producing ammonia:

N2 + 3H2 ⇌ 2NH3 + energy

1.Explain the problem surrounding the ammonia-making process in terms of chemical equilibrium.

Answers

Answer:

Explanation:

About 2,070 results (0.60 seconds)  

Answer is: at lower temperatures the reaction rate would decrease. The lower is the temperature, the slower the reaction becomes. ... Because this is exothermic reaction (enthalpy is less than zero), at lower temperatures, the equilibrium is in favor of ammonia, but the reaction doesn't proceed at a detectable rate.

Hi,

let us go through the question again

N2 + 3H2 ⇌ 2NH3 + energy  

Explain the problem surrounding the ammonia-making process in terms of chemical equilibrium.

So I would approach this question on the basis of effect of each of the reactants and products concentration on the equilibrium synthesis of ammonia.

If the concentration of any reactant is increased, the yield of ammonia is increased.

If the concentration of ammonia is reduced by removing it as it forms, the yield will as well be increased.

This reaction also yields heat meaning it is an exothermic reaction, so when we increase the temperature, the yield will be reduced. Hence it is favored by low temperature.

How many grams are in 1.46 mol K2O?

Answers

Answer:

94.196 grams

Explanation:

Answer:

94.196 grams

Explanation:

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