Please solve for the mass and explain your answer to this problem.(I just dont understand it) : (

Answer:

depressants

Explanation:

these are new to the recreational area of drugs

You can determine which is which by weighting them

Copper usually weighs heavier than iron, so if you weigh them both on the scale, the heavier one would be the copper cube

Hope this helped!

Electrolysis is a process, which allows us to break down a chemical compound into its elements, completing the balance by adjusting the number of atoms on both sides of the reaction is important because the number of electrons given up during oxidation must be the same as the number of electrons gained during the reduction.

It is a process of oxidation and reduction of one or more elements that, through the induction of electric current, breaks down the water molecule (H2O), thus producing gaseous hydrogen and oxygen.

Oxidation and reduction processes occur simultaneously and never in isolation, which is why they are called redox reactions.

Therefore, we can conclude that electrolysis is a process where electrical energy will change to chemical energy where it is important that the number of electrons given up during oxidation is the same as the number of electrons gained during reduction.

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Answer:

30mL is required

30ml of a 2.50 M hydrochloric acid solution is required to make 100.0 mL of a 0.750 M solution.

HCl is an acid which is made up of hydrogen and chlorine gas.

By the formula of dilution

M1V1 = M2V2

where V1 = 2.50 m

M2 = 100.0

V2 = 0.750 m

M1 × 2.50 m = 100.0 × 0.750 m

M1 = 30 ml

Thus, the M1 is 30 ml option a is correct.

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Since a chemical reaction is said to have occured when two or more substances are chemically combined together,  the starting materials must be sample 1 and 2 as shown in optionB.

A chemical reaction is said to have occured when two or more substances are chemically combined together. We must note that a chemical reaction produces new species that contain atoms that were present in the reactants.

Having said this much, considering the image of the product shown, the starting materials must be sample 1 and 2 as shown in optionB.

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Answer:

72.72%

Explanation:

Answer:

A water molecule consists of two hydrogen atoms bonded to an oxygen atom, and its overall structure is bent. This is because the oxygen atom, in addition to forming bonds with the hydrogen atoms, also carries two pairs of unshared electrons. All of the electron pairs—shared and unshared—repel each other.

Explanation:

Answer:

A. forms, I used his answer and it was wrong so forms is the answer...

Similar to Arctic foxes, the Grey wolves fur turn white in winter as a form of adaptation to enable to avoid detection by prey.

Adaptation refers to the special features or structures possessed by organisms which enhances their chances of survival in their environment.

Arctic foxes turn white in winter in order to avoid detection by predators as well as to be able to easily catch prey.

A similar adaptation has been observed in grey wolves whose fur turn white in winter to enable to avoid detection by prey.

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Answer:willow ptarmigan

Explanation:They change their feathers to white in the winter from red in the summer

Answer:

To me a two column proof is usually associated with Euclidean Geometry.

To use it here in this rather simplistic problem is like using a sledge hammer to drive in a finishing nail ...

here is what I would do

7y=8x-14; y=6

then:

42 = 8x - 14

56 = 8x

x = 56/8 = 7

There! I have proven it.

Explanation:

Answer:

A polar covalent bond will have the electrons shifted more towards one side or the other; a nonpolar bond will have evenly distributed electrons.

Explanation:

  The basis for a polar bond is that the electrons are shared unevenly. Some elements are more electronegative than others; that is, they pull harder on the electrons and tend to have more electrons around them. Following the periodic trends, Fluorine is the most electronegative element, so it will likely have the most dense area of electrons in a molecule. All this means that in a polar molecule, the electrons will be spread out unevenly along the lengths of the bonds as some elements will pull on them more than others will.

  Nonpolar molecules do not have to worry about differences in electronegativity, and so the electron density will be pretty evenly distributed along the entire molecule.

Hope this helps! :)

#17

#a

Group 15 elements have valency 3

#b

Let's check the EC of both

[tex]\\ \rm\Rrightarrow [O]=1s^22s^22p^4[/tex]

[tex]\\ \rm\Rrightarrow [S]=[Ne]3s^23p^4[/tex]

#c

Decrease in size

#18

#a

#b

#c

Answer:

Big dipper

Explanation:

Answer:

C. guides you through the steps to complete a complex task.

Explanation:

mark me brainliest!!

Answer:

The reaction is: -67.68

Explanation:

hope this helped:)

Ivan Pavlov is most known for demonstrating conditioned lreflex in dogs.

Conditioned reflex is a reflex action which has been conditioned to occur even without the stimulus which produces the reflex.

Ivan Pavlov is known to demonstrate conditioned reflex in dogs.

In his experiment, he trained dogs to salivate at the sound of a bell even if food which is the stimulus that produces salvation was not present.

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Answer:

A conditioned reflex is a reflex action that has been trained to occur even when the stimulus that causes the reflex is not present.

Ivan Pavlov is recognized for using dogs to illustrate conditioned reflexes.

He trained dogs to salivate at the sound of a bell even when food, the stimulus that induces salvation, was not present in his experiment.

Explanation:

Answer:

Explanation:

1: the sciencetific name of a giant squid is called Architeuthis

2: i dont know I think it says diet but: Giant squid mostly eat deep water fishes and other squids.
3: the range of a Giant squid can be found in oceans around the world at depths of at least 2,950 feet, but their exact  range is unknown.

4, characteristics,

1: it has two large fins attached to its mantle.

2: the giant squid have many unique features, such as their ability to produce 'ink' to distract and deter predators.  

3:

facts,

1: Their eyes are the largest eyes in the animal kingdom and are about 10 inches

2: Their big eyes help them to spy objects in dark depths where most other animals would see nothing

3: Until 2005, nobody had ever seen a giant squid that was alive.

4: According to the stories, an huge squid would wrap its arms around a whale, causing a terrible fight to start. 
5: Giant squid have small fins at the rear of their mantles used for locomotion. 

Human IMPACT

Not only can squids and octopuses sense sound, but as it turns out, these and other so-called cephalopods might be harmed by growing noise pollution in our oceans—from sources such as offshore drilling, ship motors, sonar use and pile driving.

Answer:0.633 0.440

Explanation:

edge

There are  0.6326 mole in Cu atom and 0.4397 mole in S atom.

A mole would be defined as the quantity of a material that includes precisely 6.02214076 X [tex]10^{23}[/tex] of the substance's elementary entities.

Calculation of mole of Cu

Given data:

Mass of Cu = 40.2 g

Molar mass of Cu = 63.546 u

Mole?

Mole can be determined by the formula:

Mole = mass / molar mass

Mole = 40.2 g / 63.546 u

Mole = 0.6326

Calculation of mole of S.

Given data:

Mass of S = 14.1 g

Molar mass of S = 32.065u

Mole = ?

Mole can be determined by the formula:

Mole = mass / molar mass

Mole = 14.1 g / 32.065u

Mole = 0.4397

Therefore, there are  0.6326 mole in Cu atom and 0.4397 mole in S atom.

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Answer: C because gases in the atmosphere are less dense

Explanation:

Answer:

letter D is the answer

Explanation:

D. The final temperature is 350 K, while pressure remains constant

Answer:350 K, while pressure remains constant

Explanation:

Answer:

C

Explanation:

i took the test

The temperate climatic zone has hot summers, cold winters, and average amounts of precipitation throughout the year. Thus, option C is correct.

The climatic zone may be defined as a world area or part discerned from a neighbor by a significant physical climatic attribute that is of a transnational scale.

The movement of the sun from the tropic of cancer to the tropic of Capricorn determines the climate of a particular zone. The equator zone is more consistent with climatic attributes. The tropical zone has seasonal climatic attributes.  

Therefore, the correct option is C.

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The discrepancy in how much a person can lift on Earth and in Mars is due to the difference in the acceleration due to gravity in both planets.

Although, the physical Quantity, mass is always constant as it is a measure of the quantity of matter in a body. The weight on the other hand is a function of the acceleration due to gravity and hence is different in different planets.

On this note, it follows that a person can carry 270kg mass on earth and 440kg mass on Mars.

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1. The empirical formula of the compound is HNO₃. The name of the compound is trioxonitrate (v)

2. The empirical formula of the compound is PbN₂O₄ or  Pb(NO₂)₂

3. The molecular formula of the compound is N₂O₅

Divide by their molar mass

H = 1.6 / 1 = 1.6

N = 22.2 / 14 = 1.586

O = 76.2 / 16 = 4.7625

Divide by the smallest

H = 1.6 / 1.586 = 1

N = 1.586 / 1.586 = 1

O = 4.7625 / 1.586 = 3

Thus, the empirical formula of the compound is HNO₃ and the name of the compound is trioxonitrate (v)

Divide by their molar mass

Pb =13 / 207 = 0.0628

N = 1.77 / 14 = 0.1264

O = 4.03 / 16 = 0.2519

Divide by the smallest

Pb = 0.0628 / 0.0628 = 1

N = 0.1264 / 0.0628 = 2

O = 0.2519 / 0.0628 = 4

Thus, the empirical formula of the compound is PbN₂O₄ or Pb(NO₂)₂

We'll begin by determining the empirical formula of the compound. This can be obtained as follow:

Divide by their molar mass

N = 4.04 / 14 = 0.2886

O = 11.46 / 16 = 0.71625

Divide by the smallest

N = 0.2886 / 0.2886 = 1

O = 0.71625 / 0.2886 = 2.5

Multiply by 2 to express in whole number

N = 1 × 2 = 2

O = 2.5 × 2 = 5

Thus, the empirical formula of the compound is N₂O₅

Finally, we shall determine the molecular formula of the compound. This can be obtained as follow:

Molecular formula = empirical × n = molar mass

[N₂O₅]n = 108

[(2×14) + (16×5]n = 108

[28 + 80]n = 108

108n = 108

Divide both side by 108

n = 108 / 108

n = 1

Molecular formula = [N₂O₅]n

Molecular formula = [N₂O₅] × 1

Molecular formula = N₂O₅

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The name of the compound with the chemical formula Br2F8 is dibromo octafluorine.

The chemical formula of a compound shows the type and proportion of each element that makes up the chemical compound.

According to this question, a compound with chemical formula Br2F8 is given. The compound consists of the following:

Therefore, the name of the compound with the chemical formula Br2F8 is dibromo octafluorine.

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Answer:

yeah if enough pressure or force is added

Answer:

3n+2n=5n 5 nitrogen atoms

Answer:

Alcohol evaporates much faster than water due to its lower boiling temperature. This allows more heat to be transferred faster, which makes it feel colder to the touch.

Explanation: