Helpppppppppppppppppppppppp

Helpppppppppppppppppppppppp

Answers

Answer 1

Answer:

I think its A or D

Explanation:

Answer 2
It's the third answer

Related Questions

Which prey is common to all owls?

Answers

Answer:

Mice

Explanation:

Small, rodent-like mammals, such as voles and mice, are the primary prey for many owl species. An owl's diet may also include frogs, lizards, snakes, fish, mice, rabbits, birds, squirrels, and other creatures. Occasionally, Great Horned Owls might even find skunks tasty enough to eat.

Please mark brainliest! I only need one more to rank up! Thank you and have a blessed day/night :D

Answer:

mice and shrews

Explanation:

i did the virtual lab on edg:)

Which of the following is a strong acid?

Answers

I believe it’s A but I’m not sure

Answer:

C. HCl

Explanation:

HCl is a strong acid because it dissociates almost completely.

A covalent compound contains 2 atoms of nitrogen and 4 atoms of oxygen. What is the percent by mass
composition of nitrogen?

(I’ll mark you as brainlister)

Answers

Do you have the molecular weight? I’ve never done this type of chemistry before but from researching it the equation is nxAx100/M. n=# of atoms, A=atomic mass, & M=molecule weight. Sorry if this isn’t helpful, if you can give me an example I may be able to help.

The percent by mass composition of nitrogen:

Given information :Nitrogen- 2 atomsOxygen-4 atomsMass of oxygen-16Mass of nitrogen -14

Solution :

Total mass = Nitrogen + Oxygen

Total mass= 2*14+4*16Total mass= 92

Percent mass composition of nitrogen =mass of nitrogen*2/ total mass*100

Percent mass composition of nitrogen=28/92*100Percent mass composition of nitrogen=30*.4

The percent by mass composition of nitrogen is 30.4.

Learn more :

https://brainly.com/question/4412816?referrer=searchResults

The sample is made up of neutral atoms. Using the information in the diagram shown, determine the number of protons, neutrons, and electrons found in each atom of your sample

Answers

Explanation:

Atoms are generally made up of three fundamental particles which are the protons, neutrons and electrons.

Protons are the positively charged particles within an atom.

Electrons carry negative charges.

Neutrons do not carry any charges.

When an atom is neutral, the number of protons and electrons within the atom is the same.

A charged atom will have a difference in the number of protons and electrons they contain.

HELP PLEASEEEEEEEE HELPPPPPPP (IMAGE)

Question 1 options:

solid


liquid


gas


Question 2 options:

solid


liquid


gas


Question 3 options:

solid


liquid


gas

Answers

1. Liquid
2. Gas
3. Solid

What is the mass of a sample containing 8.53×10 to the 24th power formula units of magnesium phosphate?

Answers

Answer:

Mass = 3732.62 g

Explanation:

Given data:

Number of formula units = 8.53×10²⁴

Mass of sample = ?

Solution:

1 mole of any substance contain 6.022×10²³ formula units.

8.53×10²⁴ formula units ×1 mol / 6.022×10²³ formula units

1.42×10¹ mol

14.2 mol

Mass of magnesium phosphate:

Mass = number of moles × molar mass

Mass = 14.2 mol × 262.86 g/mol

Mass = 3732.62 g

what is the mass of 3.77mol of K3N?

Answers

Answer:

495 g K₃N

General Formulas and Concepts:

Math

Pre-Algebra

Order of Operations: BPEMDAS

Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to Right

Chemistry

Atomic Structure

Reading a Periodic Table

Stoichiometry

Using Dimensional AnalysisExplanation:

Step 1: Define

3.77 mol K₃N

Step 2: Identify Conversions

Molar Mass of K - 39.10 g/mol

Molar Mass of N - 14.01 g/mol

Molar Mass of K₃N - 3(39.10) + 14.01 = 131.31 g/mol

Step 3: Convert

Set up:                       [tex]\displaystyle 3.77 \ mol \ K_3N(\frac{131.31 \ g \ K_3N}{1 \ mol \ K_3N})[/tex]Multiply/Divide:         [tex]\displaystyle 495.039 \ g \ K_3N[/tex]

Step 4: Check

Follow sig fig rules and round. We are given 3 sig figs.

495.039 g K₃N ≈ 495 g K₃N

based on the balanced equation: 2 K + Cl2 --> 2KCl what is the mole ratio of K to KCl

Answers

Answer:

2 : 2

Explanation:

The balanced chemical equation is given as:

            2K   +     Cl₂   →    2KCl

From the balanced reaction equation, we can conclude that;

2 moles of K will react with 1 mole of Cl₂ 2 moles of K will produce 2 moles of KCl 1 mole of Cl₂ will produce 2 moles of KCl

Therefore, the mole ratio is 2:2 or 1:1 in the simplest form.

Solutions of a halogen and a sodium halide are mixed which mixture darkens in colour because a reaction occurs

Answers

Answer:

Chlorine and sodium iodide. (see options attached)

Explanation:

Options:

(A) bromine and sodium chloride (B) bromine and sodium fluoride (C) chlorine and sodium fluoride (D) chlorine and sodium iodide

In the reactivity series, chlorine would displace all the other halogens down the group. The order goes:

The order of reactivity is chlorine > bromine > iodine.

Of all the halogens, iodine is the darkest in colour. Hence, the most likely mixture to give off dark coloration after displacement reaction would be that of chlorine and sodium iodide.

I hope this explanation was easy to understand.

Answer answer answer answer answer answer answer

Answers

Answer:

if she did it immediately and then weighed it all it would b

Explanation:

Answer:

The answer is B

I saw this question in class today

Explanation:

why was the turtle shy at the party?

Answers

Answer:

Because he likes someone named shelly?

How can we separate a homogenous mixture (a solution)? For example, how can we separate salt that has been dissolved in water?

Answers

Answer:

Well, to separate salt from water, you would stir the two together to create a homogenous mixture. Then you would boil the mixture; all the water would evaporate, leaving behind the salt

Explanation:

Select the correct answer.

What is the formula of the compound vanadium(V) oxide? Use the list of polyatomic ions and the periodic table to help you answer.

A.
VO2
B.
VO5
C.
V5O2
D.
V2O5
E.
V2O2

Answers

Answer:

Vanadium(V) oxide is the inorganic compound with the formula V2O5. Commonly known as vanadium pentoxide,

Explanation:

then it is answer D

what kind of oxide is formed when a piece of sodium is dropped in the water

Answers

Answer:

Sodium oxide is the product

Explanation:

4Na+O2->2Na2O

Which salt(s) has an exothermic enthalpy of solution? Check all that apply.

Answers

Answer: it’s the bottom 2

Explanation: I just took the test and was able to see the answer. :)

Answer:

Chemistry makes no sense. See below for answer.

Explanation:

WHAT IS THE TOTAL NUMBER OF ATOMS IN BOTH OF THESE
COMPOUNDS?

Answers

just look it up online

Do you know this Ca(NO2)2 ? It's not calcium nitrate

Answers

Answer:

The answer is, in fact, Calcium Nitrate. I even looked it up to make sure, and according to PubChem, it is Calcium Nitrate. I suggest asking your teacher what this question is trying to ask because if it says it is not Calcium Nitrate, someone got it wrong.

Explanation:

The only other name I can think of, though, is Calcium Dinitrite.

Along with maintaining structure and reproduction, what is the third item that all living things face as a challenge? Question 3 options: How to socialize appropriately How to social distance effectively How to get enough sleep. How to get enough energy for daily life

Answers

Answer:

So the answer is gonna be how to get enough energy for your daily life

Explanation:

Sometimes the human body cant get enough energy from the food and protein the food gives out.


K₂O(s) + H₂O (l)-> KOH(aq)

Answers

Answer:

K20(s)+H2O(L) -> 2KOH(aq)

On which sides of the Earth do high tides occur?

Answers


Tides move around Earth as bulges in the ocean. As the ocean bulges toward the moon, a high tide is created. The high tide on the side of Earth facing the moon is called the high high tide. The high tide caused by the bulge on the opposite side of Earth is called the low high tide.

In negative adsorption the concentration of the solution is​

Answers

Answer:

This is called negative adsorption. Hence if the concentration of the adsorbate is less on the surface of the adsorbent than in the bulk, it is known as negative adsorption.

Explanation:

Hope this helps

The sum of 4.824 + 2.03 + 4.72319 + 123.4567 + 111.1 expressed to the
proper number of significant figures is

Answers

Answer:

246.13389

Explanation:

Simplify the expression.

Balance the following Equation:

___Zn + ___HCl --> ___ZnCl2 + ___H2



50g of zinc are reacted with 50g of hydrogen chloride. What is the limiting reactant?

Group of answer choices

HCl

ZnCl2

Zn

H2

Answers

Answer:

HCl

Explanation:

Given data:

Mass of Zn = 50 g

Mass of HCl = 50 g

Limiting reactant = ?

Solution:

Chemical equation:

Zn + 2HCl      →     ZnCl₂ + H₂

Number of moles of Zn:

Number of moles = mass / molar mass

Number of moles = 50 g/ 65.38 g/mol

Number of moles = 0.76 mol

Number of moles of HCl:

Number of moles = mass / molar mass

Number of moles = 50 g/ 36.5 g/mol

Number of moles = 1.4 mol

Now we will compare the moles of Reactant with product.

                 Zn         :          ZnCl₂

                  1           :             1

                 0.76     :           0.76

                Zn         :             H₂

                  1           :             1

                 0.76     :           0.76

               HCl         :          ZnCl₂

                  2           :             1

                 1.4         :           1/2×1.4 = 0.7

                HCl         :             H₂

                  2           :             1

                 1.4         :           1/2×1.4 = 0.7

Less number of moles of product are formed by HCl it will act limiting reactant.

What is the movement of water across a membrane from an area of high concentration to an area of low concentration 

Answers

Answer:

Osmosis

Explanation:

The movement of water across a membrane from an area of high concentration to that of low concentration is defined as osmosis.

Osmosis is very important in all living cells because it is one of key mechanism for transporting materials between and within cells.

The membrane most times is selectively permeable in nature and it allows for a regulated movement of materials from one region to another.

How much Ag can be produced if one is given 64 g of Ag2O?

Answers

mass Ag = 59.5 g

Further explanation

Given

64 g of Ag2O

Required

Mass of Ag

Solution

Proust stated the Comparative Law that compounds are formed from elements with the same Mass Comparison so that the compound has a fixed composition of elements

mass of Ag in Ag2O :

= ((2 x Ar Ag)/molar mass Ag2O )x mass Ag2O

[tex]\tt mass~Ag=\dfrac{2.Ar~Ag}{MW~Ag_2O}\times mass~Ag_2O[/tex]

Ar Ag : 107,8682 g/mol

MW Ag₂O = 231,735 g/mol

Input the value :

mass Ag = ( (2 x 107,8682 g/mol )/ 231.735) x 64 g

mass Ag = 59.5 g

Or we can use reaction

2Ag₂O ⇒ 4Ag + O₂

mol Ag₂O :

= 64 : 231.735

= 0.276

mol Ag :

= 4/2 x moles Ag₂O

= 4/2 x 0.276

= 0.552

mass Ag :

= 0.552 x 107,8682 g/mol

= 59.54 g

And two or more complete sentences explain how to balance the chemical equation and classify its reaction type.
__H3PO4 + __NaBr —> __HBr + ___Na3PO4

Answers

Answer:

 H₃PO₄    +    3NaBr  →    3HBr        +    Na₃PO₄

Explanation:

The unbalanced reaction expression is given as:

            H₃PO₄    +    NaBr  →    HBr        +    Na₃PO₄

We need to balance the expression.

Let us assign variable a, b, c and d and solve mathematically;

       aH₃PO₄    +    bNaBr  →    cHBr        +    dNa₃PO₄

Conserving H : 3a  = c

                   P:   a  = d

                   O :  4a  = 4d

                   Na:   b = 3d

                    Br:    b  = c

Let a  = 1, c  = 3, d  = 1, b  = 3

So:

     H₃PO₄    +    3NaBr  →    3HBr        +    Na₃PO₄

The pictures below show samples of different substances.
The mass and volume of each sample differ from the mass and volume of the other samples. Is it possible for each sample to contain 1 mol of each substance?

A. No, because they have different masses.
B. No, because they have different volumes.
C. Yes, if each sample contains 6.02 x 1023 atoms.
D. Yes, if each sample contains 2 amu.

Answers

Answer:

C. Yes, if each sample contains 6.02 x 10²³ atoms.

Explanation:

It is possible for each sample to contain 1 mole of each sample if and only if each of the sample if made up of 6.02 x 10²³ atoms.

6.02 x 10²³ atoms is the Avogadro's number. This number is equivalent to a mole of a substance.

If the amount of matter in the given substance is at least one mole, it is possible that they are made up of one mole each of each substance. If they contain lesser amount of atoms, then it is not up to one mole of substance. But if it is greater, then, we can have even more than one mole of substance.

A mole is simply a unit of measurement and it is equivalent to 6.02 x 10²³ atoms.

Answer:

Answer: C (Yes, if each sample contains 6.02 x 1023 atoms.) for all the edge speed runners ;)

Explanation:

Got it right on the test review edge 2022

help pleaseeeeeeee eee

Answers

Electrical to mechanical

bee (b)

give brainliest now or u will never get brainliest :)))))) jkjkjkjkjkjkk

Which list of features describes an economy based on free enterprise?
government control of trade, laws that favor business, labor guilds
government ownership of factories, law that favor workers, limited trade with other countries
no government intervention, law of supply and demand, open trade with other countries
some government intervention, minimum wage laws, price setting

Answers

Option 3: No government intervention, law of supply and demand, open trade with other countries.

Answer:

no government intervention, law of supply and demand, open trade with other countries

Explanation:

A free enterprise system is an economy that is free from any type of government intervention.

Also, I took the quiz :)

am i shadow banned or something but lcan someone answer this

Answers

Answer: How many warnings have you gotten? depending on that you could've.

Explanation:

Other Questions
What term do scientists use to describe what happened at each of the marked points on the graph? Which of these best describes why Georgia was important to United States during world war 1? A- Georgia made money by selling cotton and wood to Europe.B- more soldiers came from Georgia than from any other state.C- many white planters volunteered to serve in the war effort.D- the state had many federal installations and training camps. Simplify 7.7w - 4.6w please answer hurry! No one wanted to answer my last question so could someone please do this one?and sorry its a qr code, its the only way i could get it all on one page. Let p: The kitchen is clean.Let q: The bedroom is clean.Which statement iS true if the kitchen is clean but the bedroom is not clean? If p is true, then q is true. Statement q if is true if and only if p is true. Both p and q are true. Statement p or q is true. What was the name of the 1st form of government in the U.S. that was too 3weak and had to eventually be done away with? *pls help what's one thing the Northwest Ordinance did? In a reaction process a company expected to make 6.8tonnes of ammonia but the yield of ammonia wasonly 4.2 tonnes. Calculate the percentage yield ofammonia.161.8 %20.6 %316.2%46.2 % Please help this is due today!!!!List and explain the four factors of Darwins Theory of Natural Selection. What is it called when the moon is closest to earth in its orbit?perigeeapogeespringneap HELP ME DO THIS PROBLEM PLEASE PLEASE Arteriosclerosis is a disease in which the fatty deposits in the arteries causing the walls to stiffen and thicken. According to the MayoClinio, the causes are a buildup of fat, cholesterol and other material in the artery walls. This can restrict blood flow or in severe cases stopit all together, resulting in a heart attack or stroke. Which body system does Arteriosclerosis affect?ExcretoryDigestiveRespiratoryO Circulatory What should you focus on when revising your reflective essay to prepare for a story performance HELP ASAP ILL GIBE BRAINLIEST IF U ANSWER CORRECT Directions: Write a sentence for the following word. Make sure that the sentence contains a context clue.Insinuate: A person invests $100,000 dollars at 8% for 10 years. How much money does the person have in their account if it is compounded....a) annuallyb) semi annuallyc) quarterlyd) monthlye) dailyf) continuouslyi only need a, c, e, f What is the solution to 4x+6 If an airplane travels 250 miles per hour, how far will it travel in 8 hours? Pleaseeee help I already put his on here but no one answered:( 10= 3(3) + b what is the slope and y-intercept If you understand Spanish, please help me!!