I'd is 643461717 and password is dynamo​

Answers

Answer 1
is that for Zoom?
Step by step explanation:
is that for Zoom?
Answer 2

Answer:bet

Explanation:


Related Questions

An ideal sample weighing 1.28g at 127C (temp) and 1 atm has a volume of 0.250L. Determine the molar mass of the gas.

Answers

Answer:

Molar mass of gas = 160 g/mol

Explanation:

Given data:

Mass of sample gas = 1.28 g

Temperature of sample gas = 127°C (127+273 = 400K)

Pressure of sample gas = 1 atm

Volume of sample gas = 0.250 L

Molar mass of gas = ?

Solution:

Formula:

PV = nRT

R = general gas constant = 0.0821 atm.L/ mol.K

Now we will put the values in formula.

1 atm × 0.250 L = n × 0.0821 atm.L/ mol.K ×400K

0.250 L.atm   = n ×32.84atm.L/ mol

n = 0.250 L.atm/32.84atm.L/ mol

n = 0.008 mol

Molar mass of gas:

Number of moles = Mass/molar mass

0.008 mol = 1.28 g / molar mass

Molar mass = 1.28 g / 0.008 mol

Molar mass = 160 g/mol

2. Ultraviolet radiation has a frequency of 6.8 x 10'5Hz. Calculate the energy, in
joules, of the photon.

Answers

Answer:

[tex]E=4.5\times 10^{-18}\ J[/tex]

Explanation:

It is given that, the frequency of Ultraviolet radiation is [tex]6.8\times 10^{15}\ Hz[/tex]

We need to find the energy of the photon. The formula for the energy of a photon is given by :

[tex]E=hf\\\\\text{Where h is Planck's constant}\\\\E=6.63\times 10^{-34}\times 6.8\times 10^{15}\\\\E=4.5\times 10^{-18}\ J[/tex]

So, the energy of the photon is [tex]4.5\times 10^{-18}\ J[/tex].

i need help please!

asap

Answers

Answer:

Earth is pulling up on the book with a force of 4n i think

Explanation:

Students were investigating properties of matter, but wanted to make sure that when they tested these properties they had properties that would represent the matter they were testing specifically. The students claim that they are going to test intrinsic properties. What evidence and reasoning would you provide to justify this claim? (7 points)

Answers

Answer:

See explanation

Explanation:

An intrinsic property is a property that is internal, that is, it characterizes the substance under study. The possession of an intrinsic property depends on the nature of the substance. An intrinsic property does not depend on amount of substance but on the nature of the substance.

Examples of intrinsic properties include; Density. Solubility, Melting Point, Freezing Point, Boiling Point, Conductivity etc.

Intrinsic properties really represent the matter that is being studied. For instance, the boiling point of water will always be 100°c. No other liquid can boil exactly at that temperature. Hence, this intrinsic property can always be used to identify an unknown liquid as water.

The students were right, studying intrinsic properties accurately represent the matter that is being studied.

The half life of radon 222 is 3.824 days, how much time must pass of one fourth of a given amount of radon to remain?

Answers

Answer:

After 7.648 days, you will see one quarter.

Explanation:

1 → 0.5 → 0.25

Since half life of radon-222 is 3.824 days, you need twice this time to get one quarter at the end.

2 ⋅ 3.824 = 7.648 days.

Calculate the density of helium if a balloon with a capacity of 5.00 L holds 0.890 g.

Answers

Answer:

Explanation:

Density is m/V. Also, 1 liter = 1000 [tex]cm^3[/tex]. So, we get 0.890/(5*1000) = [tex]1.78*10^{-4}[/tex] g/cm^3. You can convert this to kg/m^3 as well by multiplying it by 10. Depends which one you want.

The ratio of the mass in grams and volume in cubic meters gives the density. The density of 0.80 gm helium is 1.78 × 10 ⁻⁴ g/cm³.

What is density?

Density is the amount or the number of entities that can be contained in an area. It is denoted by ρ and is calculated as,

Given,

Mass = 0.890 gm

Volume = 5000 cm³

ρ = Mass ÷ Volume

= 0.890 ÷ 5000

= 1.78 × 10 ⁻⁴ g/cm³

Therefore, 1.78 × 10 ⁻⁴ g/cm³ is the density of helium.

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True/False: When a substance is heated, the change in energy causes the bonds between particles to become stronger.​

Answers

Answer:

false

Explanation:

the energy causes the bonds to become looser

A neutral (net charge
zero) atom of silicon contains:
A
28.09 electrons
B
16 electrons
C
14 electrons
D
38 electrons

Answers

Answer:

C 14

Explanation:

Silicon atom has 14 protons. Given that a positive and a negative neutralize each other you need 14 electrons to neutralize the 14 protons.

What does the “188” represent in Tantalum-188

A. mass number
B. atomic number
C. mass defect

Answers

Answer:

mass number

Explanation:

When there is an element name followed by a dash and then a number, the number simply represents the mass number.

for example:

Oxygen- 18

18 represents the mass number of this particular isotope

Round the value 44.981

Answers

Answer: 45

Explanation: it would be 45 bc if the value is 5 and over the number goes up and if it is lower than 5 it would stay the same.

Answer:

45 is the answer

Explanation:

All the following are examples of selective breeding EXCEPT a wild dog that finds and mates with a domestic dog. neutering a horse that is particularly small for its breed. adding sheep from another country to the bloodline to help combat disease. purposely mating larger pigs to increase the amount of meat produced.

Answers

Answer:

A. a wild dog that finds and mates with a domestic dog.

Explanation:

While designing his recording studio, Brian was trying to determine what type of surface he should use for his studio walls. He wanted to be able to produce clear, crisp, sound. So he needed a surface that wouldn't cause his music to echo. What type of surface should Brian use for his studio walls?

Answers

Answer: Acoustic Foam.

Explanation:

Acoustic Foam: This is a kind of material, which is commonly known as it called a Studio Foam, it has a kind of wedge or pyramid shape that plays a big role in absorbing sound. Brian would have to use acoustic foam by placing them round the walls and ceiling as this would stop any echoing sound and in return give a crisp and clear sound when music is been played it the studio.

what is the ionic charge lf this atom ​

Answers

Answer:

An ionic charge of 2-

Explanation:

The number of electrons is 8 and the number of protons is 2, subtract the two and the difference is the ionic charge. Hope this helps! :)

Answer:

This answer would be 2

Explanation:

The way that I have always done it is you put protons in tally marks (without crossing) over the top of the neutrons and mark them out one by one and whichever one that you have leftover that is your charge.

Hope this helps!

Explain what is meant by the term "excited state" as it applies to an electron. Is an electron in an excited state higher or lower in energy than an electron in the ground state? Is an electron in an excited state more or less stable than an electron in the ground state?

Answers

Answer:

Excited state of an electron is the state attained by an electron after it has absorbed energy and it moves further from the nucleus.

an electron is at higher energy when excited and at lower energy when at ground state.

an excited electron is less stable due to the decrease in the nuclear force of attraction and the grounded electron is more stable due to it's close distance to the nucleus.

An electron in excited state has its electron present in higher energy level while an electron in ground state is present in lower energy level.

What is an energy level ?

Electrons present in an atom revolve in different orbits which are stationary states and are also called as energy levels. The energy levels are numbered as integers which are also called as principal quantum numbers.

Energy of the stationary state is given as E= -R

1/n² where R

is the Rydberg's constant. When an electron is excited, and it moves from lower to higher energy levels there is absorption of energy, while when it moves from higher energy level to lower energy level it radiates or gives out energy in the form of radiation.

They can also be defined as the distances between electron and nucleus of an atom . Electrons present in K energy level have least energy .Energy level diagrams are studied to understand nature of bonding , placement of electrons in orbits and and elemental behavior under certain conditions.

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Help this is not that hard I think

Answers

Answer:

1,) True

2.) False

3.) A Moraine

Explanation:

Hope this helps

Please Mark As Brainliest

What is the ratio of aluminum atoms to oxygen atoms in aluminum oxide?​

Answers

Answer:

Al2 O3 or 2:3

Explanation:

The aluminum oxide consists of two elements, which are oxygen atoms and aluminum atoms, and there are 2 aluminum atoms and 3 oxygen atoms in aluminum oxide. The ratio from aluminum atoms to oxygen atoms is 2:3.

There are two types of chemical compound one is covalent compound and other is ionic compound, covalent compound formed by sharing of electron and ionic compound formed by complete transfer of electron. Therefore, the ratio of aluminum atoms to oxygen atoms in aluminum oxide is  2:3.

What is chemical Compound?

Chemical Compound is a combination of molecule, Molecule forms by combination of element and element forms by combination of atoms in fixed proportion.

An ionic compound is a metal and nonmetal combined compound.  Ionic compound are very hard. They have high melting and boiling point because of strong ion bond. The ratio of aluminum atoms to oxygen atoms in aluminum oxide is  2:3. Aluminium oxide is an ionic compound.

Therefore, the ratio of aluminum atoms to oxygen atoms in aluminum oxide is  2:3.

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what are the 20 element​

Answers

Answer:

you shoudl ask this question more clearly?

Explanation:

Answer:

The 20th Element is Calcium (Ca).

The 20 Elements are:

Hydrogen

helium

lithium

berilium

boron

carbon

nitrogen

oxygen

flourine

neon

sodium

magnesium

aluminium

silicon

phosphorus

sulphur

chlorine

argon

potassium

calcium

please hurry asap I WILL MARK BRAINLEST

The Statue of Liberty is made out of copper and was once shiny and copper-colored. Over the years, the copper has gone through a process called oxidation, where it has changed into a new material.

What has occurred?

an endothermic reaction
an energy formation
a chemical reaction
a precipitate formation

Answers

Answer:

an endothermic reaction

Explanation:

An endothermic reaction has occurred.

Answer:

endothermic

Explanation:

took the quiz

What is the density of nitrogen gas if 0.256g occupies a volume of 100mL?

Answers

Answer:

The answer is 0.00256 g/mL

Explanation:

The density of a substance can be found by using the formula

[tex]density = \frac{mass}{volume} \\ [/tex]

From the question we have

[tex]density = \frac{0.256}{100} \\ [/tex]

We have the final answer as

0.00256 g/mL

Hope this helps you

You will learn in this course that organic compounds have covalent bonds with a significant amount of energy stored in them. This is why we burn fossil fuels to generate energy to heat our homes or drive our cars. Given this information, which of the compounds listed below would you expect to have the most energy is its carbon-carbon bond?

Answers

Answer:

See explanation

Explanation:

This question is obviously supposed to be a multiple choice question but the options are missing.

However, the question intends to test the student's knowledge about combustion of fossil fuels. Fossil fuels are mostly composed of hydrocarbons of different chain lengths.

The longer the chain length, the greater the energy released when the compound is burnt since there are more energy stored in its bonds.

Hence, the correct answer to this question will be the option that contains the greatest number of C-C and C-H bonds.

NEED HELP ASAP! BRAINLEST + THANKS!
if three electrons are available to fill three empty 6p atomic orbitals, how will the electrons be distributed in the three orbitals
a.) one electron in each orbital
b.)two electrons in one orbital, one in another, none in third
c.) three in one orbital, one in other two
d.) cannot be predicted, determined by random chance

Answers

Answer:

A) one electron in each orbital

Explanation:

Orbitals get electrons one at a time. If there are three electrons and three empty orbitals, then one electron will go into one orbital!

What is the process whereby scientists check each other’s work?
A. defining the audience
B. conferencing
C. peer reviewing
D. writing

Answers

Answer:

peer reviewing

Explanation:

Its peer reviewing because there peers and there reviewing eachothers work

The process whereby scientists check each other’s work is peer reviewing.

What is peer group?

Peer group are the groups of people of same age, same background with same interest.

In the peer reviewing process group of members will check, evaluate and correct each others work, which in turn help the members of the group to update their work.

Hence, option (c) is correct i.e. peer reviewing is the process whereby scientists check each other’s work.

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What are some things that uses oxygen

Answers

Answer:

Common uses of oxygen include production of steel, plastics and textiles, brazing, welding and cutting of steels and other metals, rocket propellant, oxygen therapy, and life support systems in aircraft, submarines, spaceflight and diving.

Which food molecules are outside of the tube

Answers

Answer:

Absorption

Explanation:

I think from Quizlet

How to find the number of atoms?

Answers

To find the number of atoms, we multiple the number of mols by Avogadro's number, about 6.02x10^23

Mark Brainliest!

Answer:

to calculate the numbers of atoms in a sample, divide it's weight in grams by the amu atomic mass from the periodic table, then multiply the result by avogadro's number: 6.0 × 10^24

which of the following is a state of matter ? particle,thermal,plasma, and diffuse ?

Answers

Answer:

a particle

Explanation:

matter takes up space, and particles take place in atoms

Answer:

plasma is a state of matter

Kinetic molecular theory states... (choose all that apply)

A. There is a chemical change when a solid melts to a liquid.
B. Particles that make up matter have kinetic energy.
C. Particles that make up matter are always in motion

Answers

I think it’s B hopefully

what this pic meaning ? ​

Answers

Step 1: Separate particles of the solute from each other
Step 2: Separate particles of the solvent from each other
Step 3: Combine separated solute and solvent particles to make solution

Your aquarium looks blurred and you wanted to clean it.How will you use recantation technique to separate water from the pebbles and other designs

Answers

Answer:

why do you not ask to your maam the answer

A train in Japan can travel 813.5 miles in 5 hours

Answers

Answer:

162.7miles/hr

Explanation:

Given parameters:

Distance covered by the train  = 813.5miles

Time taken  = 5hours

Unknown:

Speed of the train  = ?

Solution:

Speed is a physical quantity.

It is mathematically expressed as;

      Speed  = [tex]\frac{distance}{time}[/tex]

So, input parameters and solve;

   Speed  = [tex]\frac{813.5}{5}[/tex]  = 162.7miles/hr

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Which of the following is considered a benefit to using wind energy as a source of power? A sailor is 30m above the water in the crow's nest on a sailboat. The sailor encounters an orca surface at an angle of depression of 15 degrees. The crows nest is 20 m horizontally from the bow (front) of the boat. How far in front of the boat is the orca? Please help!!!When 38 g of a metal at 92 C is added to43 g of water at 22C, the temperature of thewater rises to 30C. What is the specific heatcapacity of the metal? Assume no heat waslost to the surroundings.Answer in units of J/g degrees C The surface area/volume ratio is an important factor for one celled organisms. As a cell's volume grows, its surface area/volume ratio ______________, making it more difficult to acquire enough nutrients via diffusion. Question 7 options: increases freezes decreases stays the same PLEASE HELP!IMAGE DOWN BELOW! PLS ANSWER HURRY!!!!!Does an animal's ability to recognize themselves in a mirror mean that they are self-aware and/ or have a self-concept? Explain? Re-Tire produces bagged mulch made from recycled tires. Production involves shredding tires and packaging the pieces for sale in the bagging department. All direct materials enter in the first process. The following describes production operations for October.Direct materials used $226,000 Direct labor used 30% in Shredding; 70% in Bagging. $112,000 Predetermined overhead rate (based on direct labor) 165 % Transferred to Bagging $206,500 Transferred to finished goods $583,000 The company's revenue for the month totaled $470,000 from credit sales, and its cost of goods sold for the month is $240,000. Required:Prepare summary journal entries dated October 31 to record its October production activities for: a. Direct materials usageb. Direct labor incurred c. Overhead appliedd. Goods transfer from Shredding to Bagging. e. Goods transfer from Bagging to finished goods. f. Credit salesg. Cost of goods sold. How is online school going so far? the setof whole number less than 20 Pls help!!! will give brainly!!!!pls wright this sentence Spanish:The decorations for the party cost 100 dollars.Use the correct form of the verb costar How does the amendment process of the Georgia Constitution differ from the amendment process of the US Constitution? * The Georgia Constitution must be amended once every five years, but there i requirement for the US Constitution. Voters must approve amendments to the Georgia Constitution, while people vote on amendments to the US Constitution. Both the Georgia Constitution and the US Constitution According to the monk, what is one of Fortune's traits?O A. She takes her cues from the devil and punishes people as hedetermines.B. She whimsically changes her mind about whom she supports.C. She befriends specific people who are good to her and rewardsthem as she likes.D. She supports those who follow God and punishes those who dootherwise. Of the 6 essential elements foundin every living thing, known as'CHONPS', which of the followingare most prevalent? What aspect of yourself do you feel good about? Why? For academic writing, students should err on the side of formality. True or false Match the following. 1. a formal announcement or written document of an important nature petition 2. a person given the power or authority to act for others delegate 3. a formal request to someone in authority for some privilege, right, or benefit declaration if it takes joan 10 weeks to make 2 dollhouses how long will it take her to make 15 dollhouses (14+13n+3n^3)+(2+4n+9n^3) Simplify the expression (x^2+3x-28)/(x^2+10x+ 21). Show your work. NOTE: Must show your factoring work using either the big X strategy covered in class, or the quadratic formula method. Must show how you get factors. Not just give me factors. Which scale drawing of a triangle was created by using a scale factor of One-fourth, if the original right triangle has a height of 16 cm and a base length of 12 cm? (The figures below are not drawn to scale.)A triangle with base 3 centimeters and height 4 centimeters.A triangle with base 3 centimeters and height 2 centimeters.A triangle with base 6 centimeters and height 8 centimeters.A triangle with base 12 centimeters and height 9 centimeters.