Chemistry High School

2) The two solid blocks represented in the diagram are made of the same material and are under the same temperature and pressure conditions. If the mass of block X is 54 grams, what is the mass of block Y? ​

2) The Two Solid Blocks Represented In The Diagram Are Made Of The Same Material And Are Under The Same

Answers

Answer 1

Answer:

54 g

Explanation:

We'll begin by calculating the density of X. This can be obtained as follow:

Mass of X = 54 g

Length (L) = 9 cm

Breadth (B) = 2 cm

Height (H) = 1 cm

Volume of X = L × B × H

Volume of X = 9 × 2 × 1

Volume of X = 18 cm³

Density of X =?

Density = mass /volume

Density of X = 54/18

Density of X = 3 g/cm³

Finally, we shall determine the mass of Y as follow:

Length (L) = 3 cm

Breadth (B) = 3 cm

Height (H) = 2 cm

Volume of Y = L × B × H

Volume of Y = 3 × 3 × 2

Volume of Y = 18 cm³

Density of Y = Density of X (since they are made of the same material)

Density of X = 3 g/cm³

Density of Y = Density of X = 3 g/cm³

Mass of Y =.?

Density = mass /volume

3 = mass of Y /18

Cross multiply

Mass of Y = 3 × 18

Mass of Y = 54 g

Answer 2

Answer: 54

Multiply your answer

Related Questions

what is chemistry ? Explain its types.​

Answers

Answer:

Fundamentally, chemistry is the study of matter and change. The way that chemists study matter and change and the types of systems that are studied varies dramatically. Traditionally, chemistry has been broken into five main subdisciplines: Organic, Analytical, Physical, Inorganic and Biochemistry.

Explanation:

hope this helps

help i need help WITH this

Answers

Answer:

The Internet started in the 1960s as a way for government researchers to share information. ... This eventually led to the formation of the ARPANET (Advanced Research Projects Agency Network), the network that ultimately evolved into what we now know as the Internet.

A molecular compound is?

Answers

composed of molecules formed by atoms of two or more different elements.

Answer:

Molecular compounds are inorganic compounds that take the form of discrete molecules. Examples include such familiar substances as water (H2O) and carbon dioxide (CO2). Rather than forming ions, the atoms of a molecule share their electrons in such a way that a bond forms between pairs of atoms. ...

Explanation:

ym

What do these two changes have in common?
water evaporating from a lake
sediment settling to the bottom of a muddy puddle
Select all that apply.
Both are only physical changes.
Both are chemical changes.
Both are caused by heating.
Both are caused by cooling.

Answers

Answer:

Both are caused by heating. Both are Chemical changes.

Explanation:

Water evaporates from the Sun's heat and is transformed into a gas.

Sediment is the particles of an object. When heat hits it, it starts breaking up, or in dry cases, heating and cracking.

The study of chemicals is called chemistry.

The correct answer is B.

There are two types of changes in the chemical reaction. These changes are as follows:-

Physical changeChemical change.

The change which is reversible is called a physical change. For example - evaporating of water.

The change which is irreversible and can not get back to is original form is called chemical change. For example - the digestion process in a human.

According to the change, the correct answer is A that is a physical change because both can change back to their original form.

Hence, the correct answer is A.

For more information, refer to the link:-

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The energy involved when a neutral atom gains an electron is called ___.

Answers

Answer: The energy involved when a neutral atom gains an electron is called its electron affinity .

                                                                                                                    Explanation: Electron affinities are measured on atoms in the gaseous state and are very difficult to measure accurately.

Not sure how to do these, one example would prolly help me do the rest

Answers

Answer:

3. a. I⁻

Explanation:

The charge of the ion is determined by which group (vertical on the periodic table) the element is in. Iodine is in the halogens and therefore is most likely to have a  1- charge.

As continents come together to form a supercontinent,

a. the ocean that jad separated them disappears
b. a giant ocean forms on the outside of the supercontinent
c. mountain ranges rise where continental plates converge
d. all of these
​

Answers

D all of these I’m about 99% sure

chlorine is an active non metal​

Answers

Chlorine in group 17 in the periodic table and includes halogens (also fluorine, bromine, and iodine)

Electron configuration of Cl : [Ne] 3s² 3p⁵

From this configuration, it can be seen that to obtain stability like the noble gas Ar - [Ne] 3s² 3p⁶, Chlorine will need one more electron so that its configuration is the same as Ar( become anion-Cl⁻)

Then it is said that Cl is reactive

And the Cl element is included in the non-metal group because it attracts electrons (electronegative)

The elements that include non-metals are halogens, noble gases, and 7 elements H, C, N, O, P, S, Se.

Which of the following is a heterogeneous mixture

Answers

Answer:

a heterogeneous mixture is a mixture of two or more liquid substances that are immiscible that is they cannot mix

Answer:

dude I'm telling you now just think A. a fruit salad

Explanation:

How does a balanced equation satisfy the Law of Conservation of Mass

Answers

Answer: I think d

Explanation:

in which of the following are photosynthesis and resperation alike

Answers

Answer:

i need a picture or more info to understand

Answer: photosynthesis puts together a glucose molecule, but cellular respiration takes it apart and uses its energy.

Which is an example of making a quantitative observation?
a. measuring the mass of metal used in a reaction
b. recording the color of a solid formed in a reaction
c. describing a liquid as having a slippery feel
d. rating an odor on how nice it smells

Answers

Answer:

A) measuring mass of metal used in a reaction

Explanation:

Quantitive observations is data involving statistics and numerical values.

which of the following is a compound?

Answers

Water is a compound

Which is the atomic number of an alkali metal?
10
11
12
13

Answers

Answer:

11 is the atomic number of alkali metal

Explanation:

The Group 1 elements are called the alkali metals. ... All the Group 1 elements are very reactive . They must be stored under oil to keep air and water away from them. Group 1 elements form alkaline solutions when they react with water, which is why they are called alkali metals.

I think it’s 11 for the alkali metal

What do you call this process that happened in crayons and candles where it’s liquid phase turned into solid?

Answers

Answer:

Freezing/Solidification

how many strands of nucleotides make up a DNA double helix​

Answers

Answer:

two

Explanation:

Each molecule of DNA is a double helix formed from two complementary strands of nucleotides held together by hydrogen bonds between G-C and A-T base pairs.

what is the role identification of work performance ​

Answers

Incentives are considered one of the most important factors that encourage workers to put forth great efforts and work more efficiently. It is because incentives and reward system direct workers capabilities into more efficiency in their work in an attempt to achieve the institution's goals (Gana and Bababe, 2011).

Explanation:

It is one of the most important factors that encourage workers to put forth great efforts and work more efficiently.

please help mw with this

Answers

Answer:

I cannot see any picture

Explanation:

Please put a picture

Answer:

sure what's the question

Explanation:

Which of these is NOT a type of natural force? A) gravity B) friction C) throwing D) magnetism​

Answers

Throwing isn't classified as a force so I'd say C but it is a force just not a type

Answer:

C- throwing

Explanation:

You physically have to throw it while the other forces act on their own.

The half-life of tritium (H-3) is 12.3 years. If 48.0mg of tritium is released from a nuclear power plant during the course of a mishap, what mass of the nuclide will remain after 49.2 years?

Answers

Answer:

The amount left after 49.2 years is 3mg.

Explanation:

Given data:

Half life of tritium = 12.3 years

Total mass pf tritium = 48.0 mg

Mass remain after 49.2 years = ?

Solution:

First of all we will calculate the number of half lives.

Number of half lives = T elapsed/ half life

Number of half lives =  49.2 years /12.3 years

Number of half lives =  4

Now we will calculate the amount left after 49.2 years.

At time zero 48.0 mg

At first half life = 48.0mg/2 = 24 mg

At second half life = 24mg/2 = 12 mg

At 3rd half life = 12 mg/2 = 6 mg

At 4th half life =  6mg/2 = 3mg

The amount left after 49.2 years is 3mg.

1. What was the name of battle where the "shot heard around the world" happened?

Answers

Battles of Lexington and Concord (1775)

Why is the force of gravity greater for an object orbiting Earth than for the
same object orbiting Pluto?
A. Earth has only one moon, while Pluto has three.
B. Earth is closer to the sun than Pluto.
C. Earth has a heavy atmosphere and Pluto does not.
D. Earth is more massive than Pluto.

Answers

Answer:

d) Earth is more massive than Pluto.

Explanation:

The force of gravity is greater for an object orbiting the Earth than for the same object orbiting Pluto, because Earth is more massive than Pluto.

The common factor is that the greater the planet's mass, the greater its gravitational force acting on an object. Hence, the option (d) is the correct answer.

1. Amy's science teacher shows her class a model of an atom. Why is a model useful for studying atoms?
A. All atoms exist in the gas phase, and atmospheric gases are invisible.
B. A model is helpful to observe the behavior of the parts of an atom.
C. The parts of an atom cannot be directly observed.
D. A model of an atom is the same for all atoms.

Answers

Answer:

The parts of an atom cannot be directly observed.

Explanation:

An atom is the smallest indivisible particle of a substance that can take part in a chemical reaction.

Atoms are not observed with naked eyes because they are found in the realm of very small particles. It is impossible to observe the parts of an atom directly.

As a result of this, models suffice in explaining the parts of an atom. Hence the answer.

ASAP MULTIPLE CHOICE WILL MARK BRAINLIEST
An atom of gallium has 31 protons and a mass number of 70.
What is the atomic number for an atom of gallium?

31
35
39
70

Answers

Answer:

31

Explanation:

ASAP MULTIPLE CHOICE WILL MARK BRAINLIEST
A specific, electrically neutral atom of boron contains a total of 16 particles (protons, neutrons, and electrons).
What is the mass number of this atom of boron?

5
6
11
21

Answers

Answer:

11

Explanation:

2NaOH+CO2----->Na2CO3+H2O
calculate the mass of sodium carbonate produced when 10.0 g of sodium hydroxide reacts with carbon dioxide.

Answers

Answer:

13.2 g Na2CO3

Explanation:

Convert 10.0 g NaOH to mol.

10.0 g x 1 mol/39.997 g = 0.250 mol

Use mol ration given by the equation: 2 mol NaOH to 1 mol Na2CO3

0.250 mol NaOH x 1 mol Na2CO3/2 mol NaOH = 0.125 mol Na2CO3

Finally, convert the moles of Na2CO3 to grams.

0.125 mol Na2CO3 x 105.99 g/1 mol = 13.2 g

According to stoichiometry,13.25 g of sodium carbonate is produced when 10 g of sodium hydroxide reacts with carbon dioxide.

What is stoichiometry?

It is the determination of proportions of elements or compounds in a chemical reaction. The related relations are based on law of conservation of mass and law of combining weights and volumes.

Stoichiometry is used in quantitative analysis for measuring concentrations of substances present in the sample.

For the given reaction according to stoichiometry 2 molecules of sodium hydroxide react to  give 1 molecule of  sodium carbonate.

That is 80 g sodium hydroxide gives 106 g sodium carbonate

∴10 g sodium hydroxide will produce 10×106/80=13.25 g of sodium carbonate.

Thus, 10 g sodium hydroxide produces 13.25 g of sodium carbonate.

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The correct name for Fe 2(SO 4) 3 is -

Answers

Answer:

Iron (III) sulfate

Explanation:

7. What is the wavelength of a 4.34 x 10^15 /s wave?

Answers

6.19x10^7 5-1 that is the correct awnser

Among electromagnetic waves, UV rays are most dangerous because exposure to these radiation cause serious problems in living organism. The wavelength of wave is 6.9x 10⁻⁸m.

What is electromagnetic wave?

Electromagnetic wave is a wave which contain two component one is electric component and other is magnetic component. The electric and magnetic component are perpendicular to each other. There are so many wave that comes under electromagnetic wave like infrared wave , radio wave, light wave.

There is a relation between frequency of wave, and wavelength of wave

Mathematically,

ν=c÷λ

where,

ν=frequency of light=4.34 x 10¹⁵s⁻¹

c is speed of light that is 3×10⁸m/s

λ is the wavelength of light=?

Substituting all the values

4.34 x 10¹⁵=3×10⁸m/s÷λ

λ= 3×10⁸÷4.34 x 10¹⁵

λ=6.9x 10⁻⁸m

Therefore,  the wavelength of wave is 6.9x 10⁻⁸m.

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compare catalytic and thermal cracking

Answers

Answer:

Catalytic cracking is an important process in the oil industry where petroleum vapor passes through a low-density bed of catalyst, which causes the heavier fractions to 'crack' producing lighter more valuable products

Thermal cracking is an extraction process in which hydrocarbons such as crude oil are heated to a high temperature to break the molecular bonds. Thermal cracking is a refining process in which heat and pressure are used to break down, rearrange, or combine hydrocarbon molecules.

Explanation:

What is the area called in which the electrons are found ?

Answers

Answer:

orbitals

Explanation:

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