Chemistry High School

HELP PLEASEEE!!! THANK YOUU​

HELP PLEASEEE!!! THANK YOUU

Answers

Answer 1

Answer:

D: Condensation

Explanation:

Hope This Helps! :)

Related Questions

A chemist is identifying the elements present in a sample of a sea water. What characteristics of an element's
atoms always determines the element's identity?

A.
B
C.
D
The number of protons
The number of neutrons
The location of valence electrons
The number of valence electrons

Answers

Answer:

The number of valence electrons

what is k more reactive than li?

Answers

So potassium is more reactive than lithium because the outer electron of a potassium atom is further from its nucleus than the outer electron of a lithium atom. Francium atoms, with 7 shells, are the largest atoms in Group 1

silver bromide (AgBr) has a solubility of 7.07 × 10^-7 mol/L
a. write the dissolution reaction of Abraham, including all states.
b. write the expression for ksp for AgBr
c. calculate the solubility product constant of AgBr​

Answers

a. AgBr(s)⇒ Ag⁺(aq) + Br⁻(aq)

b.  Ksp AgBr = s²

c. 5 x 10⁻¹³  mol/L

Further explanation

Given

solubility AgBr = 7.07 x 10⁻⁷ mol/L

Required

The dissolution reaction

Ksp

The solubility product constant

Solution

a. dissolution reaction of AgBr

AgBr(s)⇒ Ag⁺(aq) + Br⁻(aq)

b. Ksp

Ksp AgBr  = [Ag⁺]  [Br⁻]

Ksp AgBr = (s) (s)

Ksp AgBr = s²

c. Ksp AgBr = (7.07 x 10⁻⁷)² = 5 x 10⁻¹³  mol/L


b. How many grams of CO2 are produced from 36
grams of CH4?

Answers

Answer:

Ch4 G +2o2 g co2 G +2h2o g How many moles of methane are required to produce 22 g co2 G after combustion

Explanation:

it's 22 grams..

hope the answer was helpful ....

The table shows index fossils.

A 4 row table. Row 1, CENOZOIC ERA. It is split into Quaternary Period, Pecten gibbus, and Tertiary Period, Calyptraphorus velatus. Row 2, MESOZOIC ERA. It is divided into Cretaceous Period, Scaphites hippocrepis, Jurassic Period, Perisphinctes tiziani, and Triassic Period, Trophites subbullatus. Row 3, PALEOZOIC ERA. It is divided into Permian Period, Leptodus americanus, Pennsylvanian Period, Dictyoclostus americanus, Mississippian Period, Cactocrinus multibrachiatus, Devonian Period, Mucrospirifer mucronatus, Silurian Period, Cystiphyllum niagarense, Ordovician Period, Bathyurus extans, and Cambrian Period, Paradoxides pinus. Row 4, PRECAMBRIAN, has no additional information.

Which conclusion about Paradoxides pinus is supported by the information in the table?

Life forms existed during the Cambrian period.
Similar fossil species formed after the Devonian period.
This fossil species first appeared during the Cenozoic era.
Different life forms were surviving during Precambrian time.

Answers

Answer:

A. life forms existed during the Cambrian period

Explanation:

Answer:

A

Explanation:

Have a nice day!

The color of ink is a ___

Answers

Answer:

The ink colors is Magneta, yellow, and black

What two methods return water to the ocean?
(select two)
rivers
transpiration
infiltration
perspiration

Answers

Answer:

Water in different phases moves through the atmosphere (transportation). Liquid water flows across land (runoff), into the ground (infiltration and percolation), and through the ground (groundwater). Groundwater moves into plants (plant uptake) and evaporates from plants into the atmosphere (transpiration).

Help me please if your good at science :)*me over here struggling about to cry*


During which time period does the car have the greatest acceleration?
A. Between 2 and 4 seconds
B. Between 1 and 6 seconds
C. Between 0 and 1 seconds
D. Between 1 and 2 seconds

Answers

Answer:

C. Between 0 and 1 seconds

Explanation:

Since 0 - 1 seconds the car accelerates to 20mph. The rest each second the car accelerates 5mph.

Answer:

c

Explanation:

a p e x!

Where does the energy required to break the interactions between butane molecules come from when butane boils?​

Answers

Answer:

The properties of liquids are intermediate between those of gases and solids, but are more similar to solids. In contrast to intramolecular forces, such as the covalent bonds that hold atoms together in molecules and polyatomic ions, intermolecular forces hold molecules together in a liquid or solid. Intermolecular forces are generally much weaker than covalent bonds. For example, it requires 927 kJ to overcome the intramolecular forces and break both O–H bonds in 1 mol of water, but it takes only about 41 kJ to overcome the intermolecular attractions and convert 1 mol of liquid water to water vapor at 100°C. (Despite this seemingly low value, the intermolecular forces in liquid water are among the strongest such forces known!) Given the large difference in the strengths of intra- and intermolecular forces, changes between the solid, liquid, and gaseous states almost invariably occur for molecular substances without breaking covalent bonds.

Explanation:

     im not sure this is what your looking for but i found this

What is the mass of 6.78x1050 molecules of NaCl

Answers

Answer:

Explanation:

As

Molar mass of NaCl= 58.44 gm

So we got it that,

58.44 mass of NaCl contain = 6.023*10^23  molecules of Na Cl

x mass will contain = 6.78*10^50

by cross multiplication , we get

x=  58.44*(6.78*10^50)/  6.023*10^23  

x= 65.785 * 10^27  molecules

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Which electron configuration is magnetic, paired or unpaired electrons

Answers

Answer:

paired electrons is magnetic configuration

Hannah is investigating how all of Earths systems can affect each other at any given moment. What is one way the cryosphere can affect the atmosphere?

Answers

The cryosphere can affect the atmosphere by letting the Earth get to warm. The cryosphere protects the Earth from getting to warm.

Answer:

itch come get meeeeee

Explanation:

itch come get meeeeee

How many molecules are in 54.0 grams of CO2?

Answers

Answer:

7.38654 in 54 grams

Explanation:

To get moles, you divide grams of a substance by molecular weight. The molecular weight of CO2 is 44 g/mol. 54g divided by 44/mol  is 1.227moles.

You then need to multiply moles by Avogadro’s constant (6.022x10^23). That gives you 7.38654x10^23 molecules in 54 grams of CO2.

The number of molecules in 54 grams of CO2 is 7.39 × 10²³ molecules.  

• To find the number of molecules, first there is a need to find the number of moles in a substance.  

• Moles are determined by using the formula, mass of substances/molecular weight of the substance.  

• The molecular weight of CO2 is 44 gram per mole.  

• So, the number of moles will be,  

Number of moles = 54 g/44 g/mol = 1.227 moles

Now to determine the molecules, there is a need to multiply the moles with the Avogadro's constant, that is, 6.022 × 10²³. This comes out to be as,  

= 1.227 moles × 6.022 × 10²³  

= 7.39 × 10²³ molecules

Thus, the number of molecules in 54 grams of CO2 is 7.39 × 10²³ molecules.

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Which would aid a student in preparedness for a lab?
O using a fire extinguisher if there is a fire
O reading the lab manual before class
O telling the teacher about a chemical spill
O cleaning up after the lab

Answers

I would say C. Telling the teacher about a chemical spill

Answer: cleaning up after the lab, D.

Explanation:

Julie is searching for cookware which is safe for all food preparation techniques, which of the following would best fit her needs?

A. Silicone
B. Glass and ceramic
C. Metal
D. Plastic

Answers

ANSWER:
Your best go is C

EXPLANATION:
Metal is used as a utensil all around the world, c would be your best.

A ___ star has a greater temperature than a ___ star.
A) blue, red
B) red, blue
C) red, yellow
D) yellow, blue

Answers

Answer:

red ,blue

Explanation:

because it has a greater temperature

wait i think I messed up nvm

What would be the anode
a magnesium and zinc galvanic cell?

Answers

Answer:

Magnesium Mg act as anode

Explanation:

Because its reduction potential is much less than zinc

Answer: C. Mg(s)

Explanation:

Which synthetic and natural polymers can be used to make thread or rope?

vulcanized rubber and starch
starch and cellulose
nylon and cellulose
vulcanized rubber and nylon

Answers

Vulcannized rubber and nylon

Answer:

D: vulcanized rubber and nylon

Explanation:

on edge! hope this helps!!~ d=(´▽｀)=b

Please Help Me! Check if my answer is correct and if not can you please explain the correct answer

Answers

Your answer is not correct.

Correct Answer: 4Fe + 3O2 ——> 2Fe2O3

This is the correct answer because you need equal Iron(Fe) on both sides. Since you already have 2 Irons on the products(right side) side you need 2 on the reactants(left side) side, so you add a 2. For Oxygen(O) since you already have 3 on the products(right) side and only 2 on the reactants(left) side you need to balance those and make them both 6 so you multiply by 2 on the products(right) side and multiply by 3 on the reactants(left) side. Since you can’t add a coefficient to only one element you need to add a 2 to both elements on the product side. So that gets you 4 Iron and 6 Oxygen. On the reactants side you only have 1 Iron and 2 Oxygen. We balance this equation by multiplying by 4 for Iron on the reactants side and multiplying by 3 for Oxygen on the reactants side. So this gets you 4Fe + 3O2 —> 2Fe2O3
I hope this helped!!

3 difference between Homogeneous mixture and Heterogeneous Mixture​

Answers

Answer:

Difference between Homogeneous mixture and Heterogeneous Mixture are as follows:

A mixture or sample that is consist of uniform composition and properties is called a homogeneous mixture while a mixture or sample that is consist of different composition and properties is called a heterogeneous mixture.Homogenous mixture has only single phase while heterogeneous mixture has  two or more phases.Homogenous mixture can not be separated by physical methods while heterogeneous mixture can be separated out physically.Example of homogenous mixture is Water and sugar and heterogeneous mixture is oil and water.

Deuterium is an isotope of hydrogen (H) that has:
A. 1 proton and 1 neutron
B. 1 proton and 2 neutrons
C. 1 proton and O neutrons
D. 2 protons and 1 neutron

Answers

A. 1 proton and 1 neutron

Answer: B. 1 proton and 1 neutron(s)

Explanation: Founders Educere answer.

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why can't copper sulphate be prepared by adding copper metal to dilute sulphuric acid

Answers

Answer:

Copper metal will not react with sulfuric acid . ( Copper metal is too unreactive / it is " below hydrogen in the reactivity series " ). So use copper carbonate, it reacts easily to give copper sulfate ( and carbon dioxide and water ) .

Explanation:

i hope it's help you

Copper sulphate cannot be prepared by adding copper metal to dilute sulphuric acid because copper is below hydrogen in the reactivity series of metals.

What is copper sulphate?

Copper sulphate is an inorganic compound formed by the reaction of copper and sulphur.

What is sulphuric acid?

Sulphuric acid is a strong acid that are made by the oxidizing solutions of sulphur dioxide.

Copper is below hydrogen in the reactivity series of metals, so it is unable to displace hydrogen from dil. sulphuric acid.

However, it reacts with conc. sulphuric acid to form copper sulphate.

Cu + conc. 2H2SO4  → CuSO4 + 2H2O + SO2

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Choose the correct missing coefficient to balance the following equation:
___NO + O2 ---> 2NO2 *

1
2
3
4

Answers

Answer:

the answer is 2 hope this helps


What is the main difference between physical and chemical changes
versus nuclear changes? *
A.Nuclear changes do not involve the subparticles- protons, neutrons, or electrons.
B.Nuclear changes release less energy than chemical and physical changes.
C.Nuclear changes result in the formation of a different element while physical and
chemical changes involve the same elements from start to finish.
D.There are no differences.

Answers

Answer:

B

Explanation:

Because nuear changes release less negeyr than a chmeicsl and phsycial change

A spring toy is moving down steps, What happens to the energy of the toy?

Answers

When the toy is falling down the steps some of the Kinetic energy is changing to potential energy. As it is still falling some of the potential energy changes to kinetic energy.


Hope this helps

PLS HELP MEEEEEEEEEEEE​

Answers

Answer:

108- Hassium

11- sodium

56- Barium

92- uranium

25- manganese

103- lawrencium

10- neon

22- titanium

8- oxygen

14- silicon

32- germanium

39- yttrium

Which term is NOT submicroscopic?
A. atom
B. ion
C. pen
D. molecule

Answers

It’s is c and pen ushebejdhahejrdgwejr

about the lung with balloons what respiratory organ do the small balloons represents? the big balloons?

Answers

Answer:

The plastic bottle represents the chest cavity, the straws act as the bronchi, the small balloons inside the plastic bottle serves as the lungs and the big balloon at the bottom of the plastic bottle is the diaphragm.

Explanation:

How many liters are in 27.6 g of copper phosphate with a molarity of 6.03 ?

Answers

Answer:

Volume in L = 0.028 L

Explanation:

Given data:

Mass of copper phosphate = 27.6 g

Molarity solution = 6.03 M

Volume of solution = ?

Solution:

First of all we will calculate the number of moles of copper phosphate.

Number of moles = mass/molar mass

Number of moles = 27.6 g/ 159.61 g/mol

Number of moles = 0.17 mol

Volume of solution:

Molarity = number of moles / volume in L

By putting values,

6.03 M = 0.17 mol / volume in L

Volume in L = 0.17 mol / 6.03 M

Volume in L = 0.028 L

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Answers

the third one

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