Chemistry High School

How many moles of C are in the sample?

How Many Moles Of C Are In The Sample?

Answers

Answer 1

Answer:

I need more information

Explanation:

Related Questions

How many joules would be absorbed for the water in Problem 1

Answers

Answer:

5000 cal X 4.184 J/cal =

Explanation:

20,920 jules

Which of the following particles Are free to drift in metals

Answers

use the formula; u = j/nq to evaluate the drift velocity
(u is the drift velocity of electrons, j is the current density, n is the charge carrier number density, and q is the charge on the charge carrier)

hope this helped!!

The base camp is located 5,300 meters above sea level. The hiker observes that the water begins to boil at 82⁰C, much lower than the 100⁰C needed to cook the raw egg. He hopes that just leaving the egg in the boiling water longer will let the egg cook. Will he have hard-boiled eggs for breakfast?

Answers

Answer:

No he will not have hard boiled eggs for breakfast

Explanation:

The temperature required to boil the eggs is about 100⁰C. Unfortunately, at the height of the base camp (5,300 meters), water boils at 82⁰C.

This implies that the egg will not become cooked as at the time when the water begins to boil.

Since the eggs can only become hard boiled at 100⁰C and the temperature at which water boils at 5300 meters is less than that(82⁰C), the eggs can not become hard boiled.

Astrology is the study of how the positions of the stars and movements of the planets influence the lives and behaviors of people. Astrology dates back to the second millennium BCE. Modern Western astrology is often associated with horoscopes that explain an individual’s personality and predict significant events in his or her life based on the position of stars and planets. There is no evidence to support the validity of astrology or its methods. Is astrology an example of science or pseudoscience? Explain your answer.

Answers

Answer: Astrology is an example of pseudoscience. It is based on beliefs and is not supported by any scientific evidence.

All atoms of the same element:

have the same number of atoms
have the same number of neutrons
have the same number of electrons
have the same number of protons

Answers

Answer:

have the same number of protons

Explanation:

The number of protons in an atom determine what element it is. The number of electrons and neutrons can vary from atom to atom of the element, as long as all the atoms have the same number of protons.

Look again at the properties of sodium and chlorine. Then look at the properties of the compound sodium chloride. What do you notice?

Answers

There is a difference in the properties bcoz when these two elements combine chemically they have different properties of sodium chloride not properties of the sodium and chlorine individually

How do scientist determine the ages of fossils

Answers

Answer:

Relative dating is used to determine a fossils approximate age by comparing it to similar rocks and fossils of known ages. Absolute dating is used to determine a precise age of a fossil by using radiometric dating to measure the decay of isotopes, either within the fossil or more often the rocks associated with it.

Plz help getting timed

Answers

Answer:

I think the first one is Active Transport.

Explanation:

The second one is passive transport

how many atoms are there in 6.8 mole of boron

Answers

I believe it’s 890 atoms

12. Several isotopes of a certain atom "X" exist. 4.35% of all X atoms have a mass of 39.946 amu.
83.79% have a mass of 41.941 amu, 9.50% have a mass of 42.941 amu, and 2.36% have a mass of
43.939 amu. What is the average atomic mass of atom X?

Answers

Answer: 41.97

Explanation:

2. How much ice will 7 cups of water make?

Answers

Answer:

6.44 cups of ice

Explanation:

The ratio of the densities is simply the density of one divided by the density of the other: The density of ice to water is 0.92. Using the ratio, one can simply multiply the volume of the ice by 0.92, which is the conversion factor for the volume of ice to liquid water.

7 × 0.92 = 6.44

Pls consider giving me Brainliest! It would mean and help a lot! ; )

Please help me answer this chemistry question:

Answers

The answer is either c or d, I’m not sure
C is the correct answer

What type of heat is used to cook pancakes?

Answer choices :
A. Conduction
B. Convention
C. Radiation

Answers

Answer:

A

Explanation:

Answer:

conduction (A) is the right answer

When you are done looking at slides of blood smears you should _____.
1 wash the slides off in the sink
2 leave the slides for someone else to clean up.
3 dispose according to your teacher’s instructions
4 dump in the trash
pls help

Answers

I am pretty sure it’s 3.

Answer:

Hello!!! Princess Sakura here ^^

Explanation:

The answer is Choice 3. the teacher will give you the most safe instructions according to how dangerous the blood might be.

L avanzar hacia la derecha por el período 5, el tamaño atómico, la energía de ionización y los electrones de valencia: A. disminuye, aumenta y aumentan, respectivamente. B. aumenta, disminuye y disminuye, respectivamente. C. disminuye, disminuye y aumentan, respectivamente. D. disminuye, aumenta y disminuyen, respectivamente.

Answers

Answer:

Al avanzar hacia la derecha por el período 5, el tamaño atómico, la energía de ionización y los electrones de valencia: A. disminuye, aumenta y aumentan, respectivamente.

Explanation:

El radio atómico representa la distancia que existe entre el núcleo y la capa de valencia, es decir la más externa. Por medio del radio atómico es posible determinar el tamaño del átomo.  En un período el tamaño atómico disminuye de izquierda a derecha pues en este sentido aumenta el  número atómico aumentando la carga nuclear mientras que el efecto pantalla y el número de  niveles permanecen constantes. En otras palabras, disminuye de izquierda a derecha debido a la atracción que ejerce el núcleo sobre los electrones de los orbitales más externos, disminuyendo así la distancia núcleo-electrón.

Al avanzar hacia la derecha por el período 5, el tamaño atómico disminuye.

La energía de ionización es la necesaria para remover un electrón a un átomo en estado  gaseoso. Mientras más lejos del núcleo esté el electrón, es más fácil removerlo porque se necesita  menos energía. Al aumentar el número atómico de los elementos de un  mismo período, se incrementa la atracción nuclear sobre el  electrón más externo, ya que disminuye el radio atómico y  aumenta la carga nuclear efectiva sobre él. Entonces en un período, al aumentar el número atómico, la energía de ionización aumenta.

Entonces, al avanzar hacia la derecha por el período 5, la energía de ionización y los electrones de valencia aumenta.

Los electrones de valencia  son los electrones que están en la última capa electrónica (llamados orbitales de valencia) y tienen una alta posibilidad de participar en una reacción química.

En cada período aparecen los elementos cuyo último nivel de su configuración electrónica coincide con el número del período, ordenados por orden creciente de número atómico. Por ejemplo, el período 3 incluye los elementos cuyos electrones más externos están en el nivel 3.

Los electrones de valencia aumentan en número a medida que se avanza en un período.

Entonces, al avanzar hacia la derecha por el período 5, los electrones de valencia aumentan.

A lithium atom contains 3 protons , 4 neutrons and 3 electrons

Answers

Lithium atoms contain 3 protons, 3 electrons, and 4 neutrons, so the statement is Correct
The answer is correct

please helpppppppp
helpppppppppppppppppppppppppppp

Answers

Protons are positive

- 75.0 gram sample of water at 25.0 degrees Celsius is mixed with a 100. gram sample of water at 60.0 degrees Celsius.
What is the final temperature of the water? (No units necessary in the answer)

Answers

Answer:

45

Explanation:

[tex]m_1[/tex] = First sample mass of water = [tex]75\ \text{g}[/tex]

[tex]\Delta T_1[/tex] = Change in temperature of the first sample of water = [tex]25-T[/tex]

[tex]m_2[/tex] = First sample mass of water = [tex]100\ \text{g}[/tex]

[tex]\Delta T_1[/tex] = Change in temperature of the first sample of water = [tex]T-60[/tex]

[tex]T[/tex] = Final temperature of the mixture

[tex]c[/tex] = Specific heat of water

Heat lost by water will be equal to the heat gained so we get

[tex]m_1c\Delta T_1=m_2c\Delta T_2\\\Rightarrow 75(25-T)=100(T-60)\\\Rightarrow 0.75(25-T)=T-60\\\Rightarrow 18.75-0.75T=T-60\\\Rightarrow 18.75+60=T+0.75T\\\Rightarrow 78.75=1.75T\\\Rightarrow T=\dfrac{78.75}{1.75}\\\Rightarrow T=45\ ^{\circ}\text{C}[/tex]

The final temperature of the water is 45.

What is Avogadro’s number?

A. the number of atoms in exactly 14.00 g of carbon-12

B. the number of atoms in a kilogram of any substance

C. the number of atoms, molecules, ions, formula units, or other particles in a mole of a substance

D. the number of atoms, molecules, ions, formula units, or other particles in a gram of a substance

Answers

Answer:

C

Explanation:

1 pt
Question 5
Aurora records the following observations: It rained on Monday. It was sunny on
Tuesday. It rained again on Wednesday: What is Aurora recording?

A) weather
B) neither weather or climate
C) both weather and climate
D) climate

Answers

Answer: D. Climate

Explanat

WILL GIVE BRAINLIEST!
Why do nitrogen molecules have triple bonds, whereas oxygen molecules have double bonds? How many valence electrons does each atom have, and how does that affect the type of bond formed in each molecule? Draw Lewis dot diagrams to support your answer

Answers

Answer:

Nitrogen is a diatomic molecule in the VA family on the periodic table. Nitrogen has five valence electrons, so it needs three more valence electrons to complete its octet. A nitrogen atom can fill its octet by sharing three electrons with another nitrogen atom, forming three covalent bonds, a so-called triple bond.

maybe this will be helpful

mark me brainliest

Answer:

Two covalent bonds form between the two oxygen atoms because oxygen requires two shared electrons to fill its outermost shell. Nitrogen atoms will form three covalent bonds (also called triple covalent) between two atoms of nitrogen because each nitrogen atom needs three electrons to fill its outermost shell.

The number of electrons in an atom's outermost valence shell governs its bonding behaviour. Elements whose atoms have the same number of valence electrons are grouped together in the Periodic Table. ... To form a covalent bond, one electron from the halogen and one electron from another atom form a shared pair.

Help Please!!!!!!!!!!!!!!!!!!!!!!

Answers

Answer:

B

Explanation:

which ion has the smallest radius

Answers

Potassium ion with smallest radios (K+)

science , thank you for helping !!

Answers

Answer:

sksksk

Explanation:

anna oop

Answer:

Try putting Dd okkkkkkkk

What is the what is what and why

Answers

Answer:

what

Explanation:

is this free points

What’s the question?

Which of the following is an excited state electron configuration for Iron (Fe)?

a)2-8-18-2
b)2-8-14-2
c)2-8-7-5
d)2-8-10-6

Answers

A because it’s just a

what is physical and chemical change ?

Answers

Answer:

Physical change is there is a difference in appearance, smell, etc.

Chemical change is there is change in the composition or the rearrangement of the atoms of one or more substances.

Helppppp please!!!!!!!

Answers

For the first question:

Use the formula: Density = Mass/Volume

Given in the question:

Mass - 1800 mg

Volume - 2 cm3

Calculation

Density = Mass/Volume

= 1800/2

= 900mg/cm3

Therefore, the density is 900mg/cm3.

An element that is likely to have this property of being semiconducting? Bromine, Sodium, or Tellurium?

Answers

Answer:

EASY

Explanation:

Answer:

Sodium

Explanation:

because it can cause electricity

What can you infer on the materials that clings unto the magnets? What made you say so?

Answers

Tiny iron chemicals magnet sticks to an object, the object is either iron or steel.
Other Questions
Please help me! I will give brainlist! (I think thats how its spelt-) Can someone please help me? :( Under each statement, students will create a question that is answered by the statement.1.The Inter Caetera of 1493 provided Spain with the western region and Portugal with the eastern.2.Ptolemy was one of several persons to influence Columbus.3. Guns, swords, arquebuses, horses, dogs, and canons were used to defeat distant lands.4.The Treaty of Tordesillas provided Portugal with more area to claim than the Inter Caetera of 1493.5.Cathay was filled with riches such as silk, spices, textiles and gold that European merchants wanted.6.Columbus second voyage saw him claim and colonize the lands he found. How tall is an average person? What is the function of product and service management? Choose the answer.2budgeting for a product development or financing a sale15activities or functions associated with promoting and selling a product or service18looking at the best ways to meet customers needsdirect communication with customers to help satisfy their purchasing needs Dalton is saving up money to buy a car. He deposits $10 in his savings account the 1st month. Each month after that, he deposits $5 more than the amount he deposited the previous month. Thus, Dalton's deposit is $15 the 2nd month, $20 the 3rd month, and so on. He makes his final deposit of $95 the 18th month . How much money does Dalton have in his account after these 18 deposits ? The length of a rectangle is 11cm more than the width. Find the dimensions of therectangle if the area is 60cm? help me, please! thank you Read the sentence. We needed to cross the foaming river to get back to camp, _______ the river had washed the bridge away, _______ all that was left was a few pieces of broken wood. Choose the two conjunctions that best complete the sentence. And, but while, but and, and but, and. can someone please help me ? Carter deposits $200 into a new savings account that pays 6% simple interest annually. Reese deposits $200 into a new savings account that pays 6% interest compounded annually. If both Carter andReese leave their $200 deposit in their accounts for 6 years, how much more will Reese's deposit eam in interest than Carters depositExplain all steps taken to solve the problem 1. PART A: Which of the following describes themain idea of the text?O A People often damage their eyes whenwatching eclipses because they areuninformed about the power of the sun andmoon.OB Both solar and lunar eclipses are caused bythe movement of Earth and the moon, and canbe viewed safely with protective gear.OC While partial eclipses of the sun can bedangerous, full eclipses of the sun are safe forpeople to view.OD Both solar and lunar eclipses are causedsolely by the orbit of Earth around the sunand the spinning of Earth itself. (1) Three people were killed because a man was angry that his girlfriend wanted to break up with him. (2) Now the stateis planning to kill him, and that's as it should be. (3) Some may argue that taking a life is always wrong, that two wrongsdon't make a right. (4) But there is nothing right about making taxpayers give free room and board to a person whokilled innocent people. (5) And there's nothing right about putting such a dangerous person in prison, from which he willprobably one day be released to again threaten society. - 12, -4,4, 12,What is the tenth term? What is the Measure of ZADB?A(3x + 9)B(2x - 4)^D Kimberly has seven colors of lanyards. she uses three different colors to make a key chain. how many different combinations can she choose? Jean-Ann works in the finance business. She analyzes insurance applications in order to determine the level of risk involved in insuring the applicant, then decides whether or not to insure them. Jean-Ann works asa. an Insurance Underwriter.b. an Insurance Sales Agent.c. a Financial Advisor.d. a Financial Analyst. Congress is made up of two house legislature; this is known as a _____ ______ Which best describes when the body is working on counteracting an effect? Tony had $z. He lost $3.a) Write an algebraic expression for the amount he has left.