anyways i passed my chemistry final yall. yupp

Answers

Answer 1

Explanation:

CONGRATULATIONS!!!!!

Answer 2

Answer:

chemistary more lliek dumastry ahaha

Explanation:


Related Questions

What is the atomic number of this atom?

6
8
9
16

Answers

The atomic number of this atom : 8

Further explanation

Given

Atomic model (attached)

Required

The atomic number

Solution

To determine the atomic number of an element, we can look at the number of electrons or the number of protons, because

atomic number = number of protons = number of electrons in neutral atoms

While the mass number is the number of neutrons + the number of protons located in the atomic nucleus

The charge of each of these atomic sub particles:

electron: charge -1proton: charge +1neutron: not charged / 0

If we look at this atomic model, there are 8 electrons in the shell, consisting of 2 electrons in the first shell and 6 electrons in the second shell (which can also be called valence electrons)

Whereas in the atomic nucleus there are 8 protons and 10 neutrons

Answer:8

Explanation:

How many grams are in 2.3 x 1024 formula units of KNO3?

Answers

Answer:

390 g KNO₃

General Formulas and Concepts:Chemistry

Atomic Structure

Reading a Periodic TableUsing Dimensional AnalysisAvogadro's Number - 6.022 × 10²³ atoms, molecules, formula units, etc.Math

Pre-Algebra

Order of Operations: BPEMDAS

Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to Right Explanation:

Step 1: Define

2.3 × 10²⁴ formula units KNO₃

Step 2: Identify Conversions

Avogadro's Number

Molar Mass of K - 39.10 g/mol

Molar Mass of N - 14.01 g/mol

Molar Mass of O - 16.00 g.mol

Molar Mass of KNO₃ - 39.10 + 14.01 + 3(16.00) = 101.11 g/mol

Step 3: Convert

[tex]2.3 \cdot 10^{24} \ formula \ units \ KNO_3(\frac{1 \ mol \ KNO_3}{6.022 \cdot 10^{23} \ formula \ units \ KNO_3} )(\frac{101.11 \ g \ KNO_3}{1 \ mol \ KNO_3} )[/tex] = 386.172 g KNO₃

Step 4: Check

We are given 2 sig figs. Follow sig fig rules and round.

386.172 g KNO₃ ≈ 390 g KNO₃

PLEASE HELP ME!!!!!!!!

Answers

Answer:

I think the answer is false

I think the answer is true am not sure tho.

Will give brainliest

Answers

Answer:

c. both gases have the same number of molecules

brainliest?

if you aint stephanie dont anwer​

Answers

lol I just did though :)

Answer:

wsp

Explanation:

What is generally true of atoms with relatively large atomic radii?

Answers

Answer:

Large atoms hold their electrons very tightly. ... Large atoms tend to be found on the right side of their period on the periodic table.

Explanation:

Answer:

Explanation:

Large atoms tend to have a low ionization energy and a low electron affinity.

Please help, it’s much appreciated



If the hydrogen ion concentration,
[H+], in a solution is 2.65 x 10-2 M,
what is [OH-]?

Answers

Answer: acidic

Explanation:

Answer:

3.77 x 10^-13 M

Explanation:

How many moles of copper are in 6,000,000 atoms of copper?

Answers

Answer: There will be 9.9632 × 10⁻¹⁸ moles of Copper in 6,000,000 atoms of Copper.

Please Help!

Your car has 1.95 gallons of gasoline (octane, d = 0.6916 g/mL), which reacts with oxygen
according to the balanced reaction below. Your car uses the energy produced by this reaction
at a rate of 115 kJ per second while traveling at a speed of 65 miles per hour. Calculate the
distance (in miles) the car can travel using this amount of octane.
2 C8H18(g) + 25 O2(g) -----> 16 CO2(g) + 18 H2O(g) ΔHrxn = -10,900 kJ

Answers

Answer:

38.3 miles

Explanation:

First, we convert 1.95 gallons to mililiters:

1.95 gallons * [tex]\frac{3.785 L}{1gallon}*\frac{1000mL}{1 L}[/tex]= 7380.75 mL

Then we calculate how many grams of octane are available for the reaction, using its density:

0.6916 g/mL * 7380.75 mL = 5104.53 g C₈H₁₈

Now we convert octane grams into octane moles, using its molar mass:

5104.53 g C₈H₁₈ ÷ 114 g/mol = 44.78 mol C₈H₁₈

Then we calculate how many kJ are produced from the combustion of  44.78 mol C₈H₁₈, if 2 moles produce 10900 kJ:

44.78 mol * 10900 kJ / 2 mol = 244032 kJ

We calculate how many seconds is the car available to keep going, if it spends 115 kJ per second:

244032 kJ * 1 s / 115 kJ = 2122.02 s

We convert seconds to hours:

2122.02 / 3600 = 0.59 hours

Finally we calculate the distance:

65 mi/hour * 0.59 hour = 38.3 mi

How is continental crust different from oceanic crust?


A: Oceanic crust is thicker and more dense.


B: Oceanic crust is thinner and more likely to sink.


C: Continental crust is thicker and more likely to sink.


D: Continental crust is more dense and lighter.

Answers

Answer:

b

Explanation:

google lol ur welcome

B: Oceanic crust is thinner and more likely to sink.

1. Which statement is true about the relationship between chromosomes, genes and
traits?
A. Genes are found within traits, and their codes are used to make chromosomes.
B. Chromosomes are found within genes, and their codes are used to make traits.
C. Genes are found within chromosomes, and their codes are used to make traits.
D. One gene is found on every chromosome and they are used to make traits.

Answers

Answer:

the answer is C.

Explanation:

Plz help
Plz and thank u

Answers

D Excretory systems regulate the chemical composition of body fluids by removing metabolic wastes and retaining the proper amounts of water, salts, and nutrients. Components of this system in vertebrates include the kidneys, liver, lungs, and skin.

Which defines the average inetic energy of a system's particles?
O density
O pressure
O temperature
O volume

Answers

Answer:

Temperature

Explanation:

Because Temperature is a measure of the average kinetic energy of all the molecules in a gas. As the temperature and, therefore, kinetic energy, of a gas changes, the RMS speed of the gas molecules also changes. The RMS speed of the molecules is the square root of the average of each individual velocity squared.

how dose dissolving sugar in water show that matter is made up of particles

Answers

Answer:

When sugar dissolves, the sugar particles separate from each other and mix with the water particles. When the sugar particles separate, the smaller water particles fit into the spaces between the larger sugar particles. The water and sugar particles are attracted to each other, so they move closer together when they mix.

Explanation:

:  )

what does the phrase sea of electrons describe?? please help

Answers

Answer: Metallic Bonding.In metallic bonds, the valence electrons from the s and p orbitals of the interacting metal atoms delocalize. That is to say, instead of orbiting their respective metal atoms, they form a “sea” of electrons that surrounds the positively charged atomic nuclei of the interacting metal ions.

Explanation:

Will give brainliest

Answers

I will help you with answering this question.

6b
Which of the following is a starting compound during
cellular respiration?

Answers

Answer: Oxygen and glucose.

Explanation:

Oxygen and glucose are both reactants in the process of cellular respiration. The main product of cellular respiration is ATP; waste products include carbon dioxide and water.Jun 1, 2020

HELP FAST! PLEASE
This is due in 4 hrs!!!!! Ahhhh

Answers

The amplitude is greater for both

The frequency is for wave two

Explanation:

ASAP PLZ HELP I WILL MARK BRAINLIEST Based on the diagram, what can you conclude about the pole of the magnet? O It is a south pole because the field lines spread out from this end. O It is a north pole because the field lines spread out from this end, O It is a south pole because the field lines enter the magnet at this end. O It is a north pole because the field lines enter the magnet at this end.​

Answers

Answer:C

Explanation:I took the test

Answer:

It is a south pole because the field lines enter the magnet at this end.

Explanation:

How many grams of NaCl are needed to make 300ml of a 2% solution

Answers

Answer:

2grams as per the question

Based on the chemical equation, use the drop-down menu to choose the coefficients that will balance the chemical equation:

(
)O2 → (
)O3

Answers

Answer:

3

2

Explanation:

3O2 => 2O3

the equation is balancing

Find the volume of
this object.
5 cm
5 cm
5 cm
A
15 cm3
B
125 cm3
C
30 cm3

Answers

Answer:  B. [tex]125\ cm^3[/tex].

The volume of the given object = [tex]125\ cm^3[/tex]

Explanation:

Given : Dimensions of an object : 5 cm x 5 cm  x 5 cm [ it is a cube with all equal sides]

Formula to find the volume of a cube = [tex](side)^3[/tex]

[tex]=5^3\ cm^3=125\ cm^3[/tex]

Hence, the volume of the given object = [tex]125\ cm^3[/tex]

Therefore , the correct option is B. [tex]125\ cm^3[/tex].

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5 Mi
Question 1
1 pts
Where did most of the heat of the Earth come from at its formation?
O Seismic waves
O Radioactive decay
O Planetesimals crashing into each other
Peridotite xenoliths
Question 2
1 pts

Answers

Answer:

radioactive decay

Explanation:

a study reveals that only about half of our planets internal heat stems from natural radioactivity the rest is primordial heat left over from when earth first coalesced from a hot ball of gas dust and other material

Write out the electron configurations of the ions below and determine which one is listed with an incorrect charge. (the numbers and charges written after the elemental symbol should be understood as superscripts)
A. I-
B.O2+
C. Al3+
D. Mg2+
E. none of the above

Answers

Answer:

I think B. O2+

Explanation:

Answer:

B

it must be O2- not O2+, because it's an anion not a cation.

what is stastical thermodaynamics deal?

Answers

Explanation:

Statistical thermodynamics is a theory that uses molecular properties to predict the behavior of macroscopic quantities of compounds. ... From these energy-level data, a temperature-dependent quantity called the partition function can be calculated.

Answer:

the stastical thermodaynamics deal is essentially a theory that you can use the molecules and their properties in order to predict how the molecule will behave in a macroscopic quantities of compounds. Using this, you can also tell a temperature-dependent quantity called the partition function.

(I also didn't copy and paste this, so it's safe for you to use)

May I have brainliest please? :)

what is the dilution factor if you add a 0.1ml aliquot of a specimen to 9.9 dilutent

Answers

The dilution factor : 100

Further explanation

The dilution factor(DF) : ratio of concentration of stock solution and diluted solution or ratio of the volume of final solution to the initial volume from stock solution

From equation of dilution :

M₁V₁=M₂V₂

[tex]\tt DF=\dfrac{M_1}{M_2}=\dfrac{V_2}{V_1}[/tex]

Volume of aliquot = 0.1 ml

Volume of diluent = 9.9 ml

So final volume :

[tex]\tt V_f(final~volume)=volume~aliquot+volume~diluent\\\\V_f=0.1+9.9=10~ml[/tex]

The dilution factor (DF) :

[tex]\tt D_f=\dfrac{V_f}{V_i}\\\\D_f=\dfrac{10}{0.1}=100[/tex]

Which is one advantage of using a reflecting telescope instead of a refracting telescope?

Reflecting telescopes are less expensive.
Reflecting telescopes produce clearer images.
Reflecting telescopes require only concave lenses.
Reflecting telescopes usually take up less space.

Answers

Answer:

Reflecting telescopes take up less space, is the suitable answer.

Answer:

B, or 2: Reflecting telescopes produce clearer images.

Explanation:

Took the test

it was believed that earth was a stationary object at the center of the universe all other objects in space without to go around earth which of these is a criticism of this idea

Answers

Answer: is that a question or

Explanation:

Answer:

its c

Explanation:

I am a nonmetal.I am in the Oxygen family and in row 3.I have 6 valence electrons.I am yellow and have a stinky smell.Who am i

Answers

Answer:

sulfur

Explanation:

In oxygen family sulfur has yellow color and also having stinky smell. Thus given statements are about sulfur.

It is present in oxygen family.

It has six valance electrons.

Its atomic number is 16.

Its atomic weight is 32 amu.

The electronic configuration of sulfur is given below,

S₁₆ = 1s² 2s² 2p⁶ 3s² 3p⁴

We can see the valance shell is third shell and it have six electrons thus sulfur have six valance electrons. (3s² 3p⁴ )

Sulfur is used in vulcanisation process.

It is used in bleach and also as a preservative for many food.

it is used to making gun powder.

True or False: All metals have high melting points.

Answers

Answer:

True. All metals have a melting point when it reaches a certain degree of temperature

Explanation:

Other Questions
Write four moral duties you perform every day. Which pair of elements has the most similar chemical properties?1. K and Ca 2. Cl and Ar3. P and N4. C and Na how should I start my mice and men outline need help please answer The table below lists the insurance options offered by AA Auto Insurance. Calculate the monthly payment for an insurance plan including the following options:Bodily Injury: $50/100,000Property Damage: $100,000Collision: $500 deductibleComprehensive: $100 deductibleAA Auto InsuranceType of Insurance CoverageCoverage LimitsAnnual PremiumsBodily Injury$25/$50,000$22.50$50/100,000$31.75$100/300,000$40.25Property Damage$25,000$120.50$50,000$144.75$100,000$193.00Collision$100 deductible$520.00$250 deductible$415.25$500 deductible$275.75Comprehensive$50 deductible$110.25$100 deductible$100.00a.$50.04b.$50.90c.$54.31d.$68.73 HURRY WHAT IS THE ANSWER IM TIMED ON THIS?!?!?! PLEASE HELP ME FIND X!!!!!!!!!! 50 POINTS SinA+cosB=1, A=30 degree. Find B assume that the variable under consideration has a density curve. it is given that 27.1% of all possible observations of the variable are less than 17. Determine the area under the density curve that lies to the right of 17. PLEASE HELP FAST What is the answer for this I will give brainless an extra points for correct answer I appreciate it an object weighs 150N on earth. what is the mass of the object? John runs the same amount each day (r). If he runs for 4 days this week write an expression to represent the amount he ran this week. Goodnight yall ! I just wanted to tell yall that Can someone help me ASAP Please !! How did Henry Clay help Missouri enter the Union? Why is it significant that Elizabeth Proctor would not tell the court of her husbands infidelity? It takes Andre 4 minutes to swim 5 laps.How many laps PER MINUTE is that? (round to two decimal places if needed)can someone also show there work? In the Month of March, Baldwin Corporation received orders of 147 units at a price of $15.00 for their product Bill. Baldwin uses the accrual method of accounting and offers 30 day credit terms. Baldwin delivers 98 units in March and the balance of 49 units in April. They received payment for 49 units in March, 49 units in April, and 49 units in May. How much revenue is recognized on the March income statement from this order 2 markers fewer than m packs of markers that have 9 markers in each pack 2 3/4 as an improper fraction