Can you help me solve this ?

Answers

Answer 1

All of the above are true

Have a great day!

Related Questions

how many grams of hydrogen in 1.85moles

Answers

2H2(g) + O2(g) → 2H2O(1) 0 260 g 0.2068 0.180 g 2008 When 45.0 g of CH4 reacts with excess O2, the actual yield of CO2 is 118 g. What is the percent yield? CHA(g) + 2O2(g) - CO2(g) + 2H2O(g) 73.6% 67.9% 95.2% 86.4% For the reaction: 2503(g) + 790 kcal - 25(s) + 3O2(g), how many kcal are needed to form 1.5 moles O2(g)? 790 kcal 395 kcal 2370 kcal 411 kcal When 3 moles of Ny are mixed with 5 moles of H2 the limiting reactant is N2(g) + 3H2(g) - 2NH3(g) H2 NH3 ОООО H20 O N₂

Which circle contains the mixture? Is it D?

Answers

Depends on what they are but since all 3 colors are in D, yes I would say it’s D

Which of the following is a salt?
C6H12O6

O2

C2H2
K C l

Answers

Answer:

it's kcl

Explanation:

the kcl should be salt

What is equivalent to 750 joules

Answers

Answer:

0.179254 kilocalories

Explanation:

divide the energy value by 4184

[tex]0.179254[/tex] that would be your answer

Calculate the change in enthalpy for the following reaction:

4 HCl (g) + O2 (g) → 2 H20 (g) + 2 Cl2 (g)

I will mark brainliest.
(I don't need an explanation. I just want to double check my worksheet answers.)

Answers

Answer:13hct

Explanation:

Describe the difference between at atom and an ion in regards to their substaomic
particles

Answers

Answer:

difference between atom and ion

Explanation:

What is an Atom?

The smallest unit of matter. It is indivisible and consists of neutrons, electrons and protons. Atoms can take part in chemical reactions. Combination of atoms together forms molecule. Always the number of protons and electrons are equal. Independent life may or may not be feasible within a solution. Nucleus of the atom is formed by protons and neutrons. Surrounding the nucleus are the electrons.

What is an Ion?

Atoms where the electrons and protons are not equal are called ions. Ions are charged particles. They can be either positively charged ions or negatively charged ions. If an atom is charged electrically it is considered an ion. If an atom contains maximum number of electrons than protons, then it is called anion. If an atom contains maximum number of protons than electrons, then it is called cation. Independent existence in a solution. When an atom gains or loses electrons, ion is formed.

To make you understand how atom and ion are different from each other, here are the some major differences between atom and ion:

Alka-Seltzer is pure NaHCO3
True or false?

Answers

Answer:

falso

Explanation:

Question 5 of 5
The rows in the periodic table are called periods. What is true about elements
in the same period?
O A. They have the same atomic mass.
B. Their atomic numbers increase by 1 from left to right.
C. Their magnetism increases in strength from left to right.
D. They have similar chemical properties.
SUBMIT

Answers

Answer:

B. Their atomic numbers increase by 1 from left to right

What would be the product when combustion reaction occurs in a small tightly-closed container?

Answers

Answer:

Incomplete combustion produces carbon monoxide along with some carbon dioxide. Water is always produced during combustion. If the fuel is sulfur containing, carbon disulfide will result as well.

Have a happy day! <3Miss Hawaii

Explanation:

When ice turns into a liquid, this is a __1__ change because __2__.

Answers

physical changeice melts to water (the chemical property of ice/water doesn't change).

Answer:

1.physical change because the ice from a solidform cahnged into a liquid form

PLS HELP WORTH 25 POINTS WILL MARK BRAINLIEST IF CORRECT
Examine the false statement. When pressure is added to a reaction at chemical equilibrium, the reaction responds by increasing the amount of pressure it exerts on its surroundings. Select the rewording that makes the statement true.

A. When pressure is added to a reaction at chemical equilibrium, the reaction responds by increasing the rate of reaction, which will decrease the number of particles and offset the pressure.

B. When pressure is removed from a reaction at chemical equilibrium, the reaction responds by decreasing the amount of pressure it exerts on its surroundings.

C. When pressure is removed from a reaction at chemical equilibrium, the reaction responds by increasing the rate of reaction, which will decrease the number of particles and increase the pressure.

D. When pressure is removed from a reaction at chemical equilibrium, the reaction responds by decreasing the amount of pressure it releases to its surroundings.

E. When pressure is added to a reaction at chemical equilibrium, the reaction responds by decreasing the amount of pressure it absorbs from its surroundings.

IT'S NOT C OR E

Answers

Answer:

A i think. Good luck!!!!

Calculate AH for the following reaction:
-
-
2NO2(g) → N204(9)
Use appropriate data from the following listing:
NO(g) + NO2(g) + O2(g) → N2O5(9) ΔΗ, = -113.7
NO(g) + NO2(g) → N2O3(g)
9
AH2 = -36.1
N205(9) ► N,05(s)
,
AH = -55.3
N2O3(g) + N2O3(s) -→ 2N204(9)
ΔΗ, = -8.100
2NO(g) + O2(g) → 2NO2(g)
ΔΗς = -112

Answers

Answer:

Explanation:

600.0 ml of a 0.385 M solution of LiCl is diluted to 900.0 ml. What is the new concentration of the solution.

Answers

Taking into account the definition of dilution, the new concentration of the solution is 0.2567 M.

First of all, you have to know that dilution is the reduction in concentration of a chemical in a solution, which is accomplished by simply adding more solvent to the solution at the same amount of solute.

In a dilution the amount of solute does not change, but as more solvent is added, the concentration of the solute decreases, as the volumeof the solution increases.

A dilution is mathematically expressed as:

Ci×Vi = Cf×Vf

where

Ci: initial concentration Vi: initial volume Cf: final concentration Vf: final volume

In this case, you know:

Ci= 0.385 M Vi= 600 mL= 0.600 L (being 1000 mL= 1 L) Cf= ? Vf= 900 mL= 0.900 L

Replacing in the definition of dilution:

0.385 M× 0.600 L= Cf× 0.900 L

Solving:

Cf= (0.385 M× 0.600 L)÷ 0.900 L

Cf= 0.2567 M

In summary, the new concentration of the solution is 0.2567 M.

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What is the mass of some honey that has a volume of 120.8 fl oz and a density of 1.38 kg/L?

Answers

Answer:

166.704

Explanation:

Si un átomo tiene 18 electrones, cuántos protones tiene?

Answers

Answer:

huhhhhhhhhj

hshshhshshshshshsh

Select reason(s) why 1-hydroxy-2-methyl-5-isopropylbenzene is an incorrect systematic name for carvacrol.

a. If named with benzene as the parent, the methyl group needs to have the first locant in order to minimize the number of the third locant.
b. The substituents are not listed alphabetically.
c. If named with benzene as the parent, the hydroxyl group needs to have the first locant in order to minimize the number of the third locant.
d. The substituents are not listed in order of increasing mass.

Answers

The reason why 1-hydroxy-2-methyl-5-isopropylbenzene is not the correct systematic name for carvacrol is because the substituents are not listed alphabetically.

IUPAC nomenclature provides the correct and acceptable system of naming organic compounds which are internationally acceptable among scientists.

According to the rules of IUPAC nomenclature, compounds are named in alphabetical order. The names of the locants are ordered in such a way that they have the lowest number. Following IUPAC nomenclature, the correct name of the compound ought to be, 1-hydroxy-5-isopropyl-2-methylbenzene.

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4. Why is it that your feet don't sink into the earth?

Answers

Answer:

because our feet has more density

Part D
Based on the activity series you created in part C, predict whether there would be a chemical reaction or no
reaction when the listed pairs of substances are combined.

Answers

Answer:

magnesium and copper(II) sulfate no reaction

iron and magnesium sulfate reaction

copper and iron(III) nitrate reaction

magnesium and hydrochloric acid reaction

Explanation:

draw the lewis dot structure of C4H8N2O3

Answers

Explanation:

Refer to the attachment

Extrashots:-

C4H8N2O3 is called asparagine .

On the 14 point pH scale, soaps and cleaning solutions are typically -

Question 7 options:

0-6

8-14

7

Answers

Answer:The answer is 8-14

Explanation:It can range from 9-10 or

or above to 14 depending on the amount of leached wood ash(lye) a.k.a potassium carbonate which is an alkalline compound

Answer:

8-14

Explanation:

Please answer question (e)

Answers

Answer:

I don't know sorry am read in 5 class

Summarize the steps of water cycle

Answers

Answer:

The water cycle consists of three major processes: evaporation, condensation, and precipitation. Evaporation is the process of a liquid's surface changing to a gas. In the water cycle, liquid water (in the ocean, lakes, or rivers) evaporates and becomes water vapor.

Explanation:

A line can be used to represent a covalent bond between two atoms. Diagram pairs of atoms
that can form single, double, and triple bonds.

Can every atom form each of these kinds of bonds?

Answers

It’s a single hope this helps

The covalent bond has been formed by the atom with the difference in the electronegativities and the presence of loan pair for an unsaturated bond.

The covalent bond has been formed between the atoms when there has been the sharing of electrons. The presence of loan pairs results in the formation of pi bonds, which are unsaturated covalent sharing formed above or below the covalent bonds.

An example of pair with a single bond has been:

H-HO-O

The examples of pairs with double bonds:

HHC=CHHC=O

The examples of pairs with triple bonds:

N [tex]\equiv[/tex] NHC [tex]\equiv[/tex] CH

Not every atom can form these bonds as there has been the presence of loan pairs with the atom for the formation of the double and triple bond.

For more information about the covalent bond, refer to the link:

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what classifies materials as a pure substance or a mixture

Answers

Answer:

A pure substance is a form of matter that has a constant composition and properties that are constant throughout the sample. Mixtures are physical combinations of two or more elements and/or compounds.

wat are the dangers of chemicals in the laboratory

Answers

chemicals can physically hurt you, damage you, or cause fires.

A 623 ml sample of gas at STP is allowed to expand (like the universe) until it

occupies a volume of 1200 ml, What temperature would be needed to return the

gas to standard pressure? (all trying to find some equilibrium)

P

T

V

Initial latm

623

Final

loton

Effect

고

212

Yoo

&

a. What variables are constant? (NOT CHANGING!)

Answers

12000 ml would be d to my calculations but then u can 12

What is the molarity of a solution that contains 0.505 mol KCl (molar mass = 74.55 g/mol) in 7.98 L of solution?

Answers

Answer:c

0.0253 M

Explanation:

Molarity is a measure of a solution's concentration in terms of how many moles of solute it contains per liter of solution.

So, in essence, if you have the number of moles of solute, like you do here, and the total volume of the solution expressed in liters, you can find how many moles of solute you get per liter, i.e. the molarity of the solution.

Keeping in mind the fact that the moles of solute are distributed evenly in any given volume of the solution, you can say that because

7.98 L

of solution contain

0.202

moles of solute, which in your case is potassium chloride,

KCl

1 L

of this solution will contain

⋅

0.202 moles KCl

7.98

0.0253 moles KCl

So, if your solution contains

0.0253

moles of potassium chloride per liter, it follows that its molarity is equal to

0.0253 M

Here

is equivalent to

mol/L

, or molar.

The molarity of the solution that contains 0.505 mol KCl in 7.98 L of the solution is 0.0632 moles/L.

What is called the Molarity of a solution?

Molarity is a measure of a solution concentration in terms of how many moles of solute it contains per liter of solution.

Molarity = Moles of solute / Liters of solution

Its unit is mole/L

Calculating the molarity of the given solution:

Given that a solution contains 0.505 mol KCl in 7.98 L of solution

Moles of solute (KCl) = 0.505 mol

Liters of solution = 7.98 L

Then, the molarity will be

M = [tex]\frac{0.505}{7.98}[/tex]

= 0.0632 moles/L

Therefore, the molarity of the given solution is 0.0632 moles/L.

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Calculate the number of Calories in a 5 fluid oz glass of red wine that contains 2.1 g carbohydrate and 13.8 g alcohol.

Answers

Answer:

Explanation:

What are the 26 states of matter?

Bose–Einstein condensate.

Fermionic condensate.

Degenerate matter.

Quantum Hall.

Rydberg matter.

Rydberg polaron.

Strange matter.

Superfluid

In this case, the amount of calories is 105 calories.

One gram of alcohol provides approx. 7 calories, whereas one gram of carbohydrates contains 4 calories.

In this case, the number of calories can be calculated by summing the calories provided by alcohol and carbohydrates.

Number of calories = (2.1g x 4) + (13.8g x 7) = 8.4 + 96.6 = 105 cal

In conclusion, the amount of calories, in this case, is 105 calories.

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Describe how you would separate rock salt to obtain salt crystals and pure dry sand.

Answers

Separating Sand and Salt:

Probably the easiest method to separate the two substances is to dissolve salt in water, pour the liquid away from the sand, and then evaporate the water to recover the salt.

HOPE THIS HELPS YOU!!!!

Based on the results of the genetic crosses you have shown how think the red and white flower alleles can "interact with one another? Explain both the F¹ and F² generations. ps.. ill mark you the brainliest

Answers

Answer:

in f1 its shows all hybrid red

Explanation:

RR rr

R R

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Other options for moving between terminals include the pedestrian tunnels and the Terminal Transfer Bus. O'Hare has about 1,028 direct domestic flights and 126 direct international flights each day. In contrast to O'Hare, Midway International Airport is a relatively small airport located southwest of downtown Chicago. The airport only has three concourses, making travel between gates easy and efficient. The facility has approximately 238 direct domestic flights and 12 direct international flights each day.Both airports feature a variety of artwork, restaurants, and activities for people to experience. The Chicago Public Art Program provides the paintings, murals, sculptures, and exhibits in the corridors of both airports. O'Hare International Airport displays a replica of the fighter plane flown by Lieutenant Commander Edward H. O'Hare, the airport's namesake. Likewise, Midway contains an exhibit of the SBD Dauntless, a dive bomber plane recovered from Lake Michigan. Both airports also have restaurants that feature Chicago delicacies created by local chefs, but only O'Hare has the world's first airport aeroponic garden where foods for the airport restaurants are grown. Passengers waiting at both airports can relax and stretch in the Yoga Room. They can also visit the world's first aeroponic garden in an airport where foods for the airport restaurants is grown. While both airports are kid-friendly, O'Hare provides a special interactive children's area. The "Kids on the Fly Exhibit" allows children to play in a model airplane, helicopter, and control center. With the additions of the aeroponic garden and the children's play area, O'Hare offers a unique airport experienceWhich sentence in the text helps the reader understand its text structure? O'Hare has about 1,028 direct domestic flights and 126 direct international flights each day. While both airports are kid-friendly, O'Hare provides a special interactive children's area. 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Each would have the same labor and materials costs (food, serving containers, napkins, etc.) of $1.80 per sandwich. Sandwiches sell for $2.50 each in all locations. Rent and equipment costs would be $5,040 per month for location A, $5,560 per month for location B, and $5,730 per month for location C.Required:a. Determine the volume necessary at each location to realize a monthly profit of $10,500.b. If expected sales at A, B, and C are 20,800 per month, 22,000 per month, and 22,800 per month, respectively, calculate the profit of each location.c. Which location would yield the greatest profits? PLEASE HELP what is the next term what is A in the sequence and what is the common ratio for 2 4 8 16 32 3.1. The 20 students on the math team want to raise $490 to buy practice books. They have already raised $220. If each student raises the same amount, howmuch more money must each student raise? A toy rocket is launched from a platform 33 feet above the ground at a speed of 83 feet per second. The height of the rocket in feet is given by the polynomial 16t2 + 83t + 33, where t is the time in seconds. How high will the rocket be after 3 seconds?a. 2586 feetb. 234 feetc. 138 feetd. 105 feet When DO YOU use an article before television and when do you NOT use an article before television? Pls give examples related to this topic. what was the stonewall inn before it reopened as gay bar? NO LINKS plisssss plissss helpppo meee 16 A particular light source gives off light waves with a measured wavelength of 2.0 x 10-7 m.What is the frequency of the light source? 6.67 X 10-15 HzB 6.0 x 1011 Hz 1.5 x 1015 HzD Not enough information Solve each system of linear equations using the elimination mehod -8x + 10y = -228x - 15y = 17 which item did the stamp act say that the colonists were supposed to buy a british stamp for? 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