Can someone please check my answer?

Answer:

copper oxide + hydrochloric acid --> copper chloride + water

Explanation:

Thenks and mark me brainliest :))

Answer:

Copper oxide hydrochloric acid  ( CuCl2 + H2O)

Explanation:

CuO +  HCl  → CuCl2 + H2O

Increasing the surface area between solute and solvent, increases the rate of dissolution.

Rate of any process will gives idea about the speed of the completion of that happening process.

Dissolution is a process in which solute particles gets dissolve in the solvent medium. If we increases the surface area of any one medium of the solution like solute or solvent then the rate of dissolution increases, as it increases the space to get attracted to each other.

Hence, option (d) is correct.

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Answer:

15.9 Liters

Explanation:

according to Boyle's law P1V1 = P2V2

so we just plug in the values the problem gives us and solve for V2

(1.74)(4.21)=(.46)(V2)

V2 = 15.9 Liters

*note - there is a typo in your question when you states P1 = 1 074 atm. I just assumed you meant 1.74, if this is a mistake just replace 1.74 with the real P1 and solve it as shown above

if you have any questions just comment them below

Answer:

1.57694 L

Explanation:

To convert from mL to L, you simply divide the value by 1000.

Answer:

Acid/String Electrolyte

Explanation:

Litmus paper turning red means it is an acidic solution. A pH of more than 7 is Base while pH of less than 7 is an acid. Since the pH is 2, less than 7, it s is an acid. Since it has a high electrical conductivity, it must be a strong Electrolyte.

Answer:

qreleased = -273J.

Explanation:

Hello there!

In this case, according to this calorimetry question, and keeping in mind that the hot substance releases heat to the cold substance which absorbs it, according to:

-qreleased = qabsorbed

In such a wat, since the water absorbs 273 J of heat and no heat is lost, the amount of this measurement released by the metal is:

-qreleased = 273J  

qreleased = -273J

Regards!

Answer: Soils are formed through the interaction of five major factors: time, climate, parent material, topography and relief, and organisms.

Soil structure affects plant growth in many, often surprising, ways. The most obvious effects are on root growth, which is strongly inhibited by hard soil, and which in turn influences the ability of the root system to extract adequate water and nutrients from the soil.

Explanation:

https://www.publish.csiro.au/sr/pdf/SR9910717

This is where I gather some info.  

hi there bestie [i think its 3]

Answer: If ... Then... Because...

Explanation: if I water this plant twice a day then it will grow 3 feet because the more water it gets the bigger it grows

Answer:

1.7 mol/dm3

Explanation:

working out in the image

0.02 mol NaCl

Explanation:

(0.2M NaCl)×(0.10 L) = 0.02 mol NaCl

Answer:

[tex]V_2=5.32L[/tex]

Explanation:

Hello there!

In this case, according to the given pressure, temperature and volume, it is possible for us to calculate the final volume via the combined ideal gas law:

[tex]\frac{P_2V_2}{T_2}=\frac{P_1V_1}{T_1}[/tex]

In such a way, we solve for the final volume, V2, to obtain:

[tex]V_2=\frac{P_1V_1T_2}{T_1P_2}[/tex]

Then, we plug in the given data to obtain:

[tex]V_2=\frac{1.19atm*2.3L*380K}{326K*0.60atm}\\\\V_2=5.32L[/tex]

Regards!

Answer:

D.4 types of molecules is yr ans.

stay safe healthy and happy.

Answer:

1.208x10⁻³M and 392.5ppm La(NO3)3

Explanation:

The reaction that occurs is:

La2O3 + 6HNO3 → 2La(NO3)3 + 3H2O

Molarity is defined as the moles of solute (In this case, LaO3) per liter of solution. And ppm, are mg of solute per liter of solution.

To solve this question we must find the moles of La(NO3)3 produced and its mass in milligrams to find molarity and ppm:

Moles La2O3 -Molar mass: 325.81g/mol-

0.1968g * (1mol / 325.81g) = 6.04x10⁻⁴ moles La2O3

Moles La(NO3)3:

6.04x10⁻⁴ moles La2O3 * (2mol La(NO3)3 / 1mol La2O3) = 1.208x10⁻³ moles La(NO3)3

Molarity:

1.208x10⁻³ moles La(NO3)3 / 1L =

Mass La(NO3)3 -Molar mass: 324.92g/mol-

1.208x10⁻³ moles La(NO3)3 * (324.92g / mol) = 0.392.5g La(NO3)3

In mg:

392.5mg La(NO3)3 / 1L =

392.5ppm La(NO3)3

Answer:

a. Precipitate

Explanation:

solids can precipitate out of the solution and be left over after the reaction. reactants are incorrect because they are reacted to cause the reaction. b and d are also irrelevant terms.

Answer:

by designing and performing an experiment

Explanation:

This is because hypothesis refer to a guess or explanation that is made base on limited evidence and it is proposed for further experiment.

The best way to know whether your hypothesis is true is to design and conduct an experiment. When this is done, the outcome will determine whether the hypothesis is true and valid or not.

Answer:

could u all help me??

Who was Agamemnon trying to persuade to come fight with him again?

Patroclus

Achilles

Odysseus

Hector

Explanation:

Answer:

A.

Explanation:

specific heat of water is immense as compared to most of other known substances. The result of this characteristic is that water heats slowly and cools slowly. In coastal region and islands, the air above lands gets heated up quickly as compared to air above water.

The impact of the specific heat of water on the planet is that air above the ocean not easily gets heated.

Specific heat is define as the amount of heat needed to increase the one unit temperature of one gram of the substance.

Specific heat of water is equal to 1 calorie and it is that much of high as water will require a lot of energy to change its temperature, and not easily gets cool or warm. Due to this water of the oceans almost have the same temperature and air above the ocean not easilt gets warmer as comapre to the air over the coastal area.

Hence, impact of the specific heat of water on the planet explained above.

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Answer:

Do it your self bro

Explanation:

You lazy bum do it yourself

Answer:

1. conduction

2. Convection

3. Radiation

Answer:

I think its iron(II) oxide

Explanation:

The substance is black but when it's mixed with water it turns green solution so when mixed with sodium Hydroxide it turns green

Answer:

Because: The mixtures contain unwanted substances which may be harmful and may degrade the properties of mixtures. So we, need to separated them and extract useful substances.

Answer:

The composition of the mixture is very important, as a result of nature exists solely by its properties, and also the reactions may be separated.

Answer:

Increasing number of electrons

Explanation:

London dispersion forces are intermolecular forces that occur due to momentary shifts in the electron cloud of atoms or molecules.

London dispersion forces are most commonly observed as the predominant kind of intermolecular forces in non-polar substances.

Generally, it is observed that the strength of these London dispersion forces tends to increase as the number of electrons in the substance increases.

Answer: Hemoglobin

Explanation: Got it on the test

In Hemoglobin amino acids are found.

Amino acids are the organic compounds that comprises functional groups like amine [tex](-NH_{2})[/tex] and carboxyl (-COOH). It combines to form the proteins. Amino acids are known building components of proteins.  

Amino acids have

Now check all the options one by one:

Option (A): A Hemoglobin molecules consist of oligoprotein. It has 4 polypeptide chain which contain 2 alpha chain which contains 141 amino acid and 2 beta chain which contain 146 amino acid. Glutamine, valine and serine are the amino acids which is required for Hemoglobin. So it is correct option.

Option (B): Olive oil mainly contained fatty acids which are monosaturated. So it is incorrect option.

Option(C): Potato starch contains only starch. It forms a complex carbohydrate. So it is incorrect option.

Option (D): In DNA hydrogen bonds are present not peptide bond. So it is incorrect option.

Thus, we can say that In Hemoglobin amino acids are found.

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