Which of the following is a good definition of matter?
O A. Anything that is made up of light and gravity
O B. Anything that has mass and takes up space
O C. Anything that produces heat and mass
O D. Anything that has energy and creates heat

Answers

Answer 1

Answer:

B

Explanation:

I did the question before and got it right.

Answer 2
Answer :
B

Explanation:
I got it right on my test.

Related Questions

What is the correct systematic name for ICl5?

Answers

Answer:

iodine pentachloride

Explanation:

The process of reviewing information using an investigator is knowledge, training, experience, and expertise is what type of reasoning?

Answers

Answer:

Inductive reasoning

Explanation:

Inductive reasoning is based on making broad generalizations from specific observations. We draw conclusions from the data we have. This is the opposite of deductive reasoning, which starts with a general statement and aims to reach a specific conclusion.

Based on this, we can conclude that, if an investigator uses their knowledge, training, experience, and expertise to reach a conclusion, they are using inductive reasoning.

g Calculate the mass percent of sodium bicarbonate in the solution that has 7.00 g of solution and 0.052 Kg of water.

Answers

Answer:

11.86%

Explanation:

First, we convert both solvent and solute to the same unit, say, kg. We have.

Mass of Sodium Bicarbonate = 7g = 7/1000 kg = 0.007 kg

Mass of water = 0.052 kg.

Formula for the mass percent is

% of sodium bicarbonate = [(mass of sodium bicarbonate) / (mass of total solution) * 100%]

Total mass of solution = 0.007 + 0.052 Total mass of solution = 0.059

% of sodium bicarbonate = 0.007 / 0.059 * 100%

% of sodium bicarbonate = 11.86%

Therefore, the mass percent of sodium bicarbonate I'm the solution is 11.86%

Predict which of the following metals reacts with hydrochloric acid.
Check all that apply.
-Sn
-Hg
-Cr
-Ni

Answers

Answer:

Pb, Cr, Fe

Explanation:

The metals that can react with hydrochloric acid are; Sn, Cr and Ni.

The electrochemical series shows the reactivity of elements. An element can only replace another element in solution when that element is higher in the electrochemical series.

The metals that can replace hydrogen in a solution of hydrochloric acid must be metals that are above hydrogen in the electrochemical series. These metals are; Sn, Cr and Ni. Hg is a noble metal hence it does not replace hydrogen in an acid solution.

Learn more: https://brainly.com/question/25249351

Identifying the particles of an atom

Answers

Answer:

6 protons 8 neutrons 5 electrons

Explanation:

protons are blue neutrons are red electrons are green

6-p, 8-n, 5-e.........

PLEASE HELP AND FAST!!!

Answers

The last one should be right
reacts with nitric acid !

What best describes the location of an atom's electrons?

Answers

The common way electrons are found in shells or orbitals that surround the nucleus of an atom.I hope it helped
They would be
Around the Nucleus

the moon lost its volcanic __ beacuse of its weak gravity

Answers

Answer:

Explanation:

the moon is still volcanic

1. Marisa determined the melting point of a substance to be 24.5C. Find the percent error of her measurement if the actual melting point is 31.2C.

Answers

Answer:

[tex]\%\ Error = 21.5\%[/tex]

Explanation:

Given

[tex]Measured = 24.5[/tex]

[tex]Actual = 31.2[/tex]

Required

Determine the percentage error

First, we need to determine the difference in the measurement

[tex]Difference = |Actual - Measured|[/tex]

[tex]Difference = |31.2 - 24.5|[/tex]

[tex]Difference = |6.7|[/tex]

[tex]Difference = 6.7[/tex]

The percentage error is calculated as thus:

[tex]\%\ Error = \frac{Difference * 100\%}{Actual}[/tex]

[tex]\%\ Error = \frac{6.7 * 100\%}{31.2}[/tex]

[tex]\%\ Error = \frac{670\%}{31.2}[/tex]

[tex]\%\ Error = 21.4743589744\%[/tex]

[tex]\%\ Error = 21.5\%[/tex] approximated

How many moles are in 141.16 grams of F?
Use two digits past the decimal for all values

Answers

Answer: 2681.81

Explanation:

2681.81

hope that helps

The radius of Pt atom in an fcc structure is 0.1386 nm. Pt has atomic mass of 195.09 g/mol. Calculate the density of this fcc structure. The Avogadro’s number NAis 6.022 x 1023 per mole

Answers

Answer:

21.51g/cm³

Explanation:

To answer this question we need to know that, in 1 unit FCC cell:

Edge length = √8 * R  

Volume = 8√8 * R³

And there are 4 atoms per unit cell

The mass of the 4 atoms of the cell, in grams, is:

4 atom * (1mol / 6.022x10²³atom) * (195.09g / mol) = 1.2958x10⁻²¹g

Volume in cm³:

0.1386nm * (1x10⁻⁷cm / 1nm) = 1.386x10⁻⁸cm

Volume = 8√8 * (1.386x10⁻⁸cm)³

Volume = 6.02455x10⁻²³cm³

And density, the ratio of mass and volume, is:

1.2958x10⁻²¹g  / 6.02455x10⁻²³cm³  =

21.51g/cm³

Calculate the density of the aluminum cylinder with a diameter 0f 1.3 cm weighing 18 grams. Height of the cylinder is 5.2 Cm. Find percent error (Actual density of Aluminum is 2.7 g/cm3). (Formula for volume of cylinder is πr2h)

Answers

Answer:

Percent error = 3.7%

Explanation:

Given data:

Density of Al cylinder = ?

Weight of cylinder = 18 g

Diameter = 1.3 cm

Height = 5.2 cm

Actual density of Al = 2.7 g/cm³

Percent error = ?

Solution:

First of all we will calculate the volume of cylinder through given formula.

V = πr²h

r = diameter /2

V = 22/7 × (0.65 cm)²× 5.2 cm

V = 22/7 × 0.4225cm²× 5.2 cm

V = 6.89 cm³

Now we will calculate the density.

d = m/v

d = 18 g/ 6.89 cm³

d = 2.6 g/cm³

Percent error:

Percent error = measured value - actual value /actual value × 100

Percent error = 2.6g/cm³ - 2.7g/cm³ /2.7g/cm³  × 100

Percent error = 3.7%

Negative sign shows that measured or experimental value is less than actual value.

How many grams of H3PO4 would be needed to produce 25.0 grams of H2O?

Answers

Answer:

653 gH³PO⁴

Explanation:

We'll first write the chemical equation for this reaction:

P

4

O

10

(

s

)

+

6

H

2

O

(

l

)

4

H

3

PO

4

(

a

q

)

Let's now find the relative number of moles of phosphoric acid (

H

3

PO

4

) using the coefficients of the equation, and the fact that

10.0

mol H

2

O

react:

10.0

mol H

2

O

(

4

l

mol H

3

PO

4

6

mol H

2

O

)

=

6.67

mol H

3

PO

4

Now, using the molar mass of

H

3

PO

4

(calculated to be

98.00

g/mol

), let's find the theoretical mass of phosphoric acid produced:

6.67

l

mol H

3

PO

4

(

98.00

l

g H

3

PO

4

1

mol H

3

PO

4

)

=

653

mol H

3

PO

4

Thus, if the reaction goes to completion, there will be a yield of

653

grams of phosphoric acid

Thank me later

Mark me as brainliest please for my answer

What are graphs? Give an example of a graph that would be useful to you in your everyday life

Answers

Answer:

A graph can be very handy in collecting data and storing it in one place. A graph can be a very effective tool in presenting visual information rather swiftly. Hope this helps! I am learning about graphs in my course!

Explanation:

Answer:

graph) a diagram showing the relation between variable quantities, typically of two variables, each measured along one of a pair of axes at right angles.

Explanation:

Graphing is used daily. From stockbrokers to performance evaluation in companies. All use them to boost sales and meet deadlines. Even simple calculations can be assessed better by using a graph.

(let me know if this helps?)

Look at the image HOH. What does this image represent?

Answers

Answer:

Formation of covalent bond structures. The image is essentially a Lewis dot structure.

The image of HOH has depicted the covalent bond formation in water. Thus, option B is correct.

The image has been the Lewis structure of the water molecule. It has been consisted of two hydrogen atoms bonded to oxygen molecules.

The oxygen has a presence of 4 dots that have been the representation of the valence electrons.  Thus, oxygen has been consisted of 2 lone pairs.

The water molecule has the presence of shared electrons between hydrogen and oxygen. The bond formed by the sharing of electrons has been covalent.

Thus, the image of HOH has been the representation of the formation of covalent bonds in water. Thus, option B is correct.

For more information about Lewis structure, refer to the link:

https://brainly.com/question/4144781

Which element is more reactive?
A) Flourine B) Oxygen C)Cabron D)Boron

Answers

i believe the answer is fluorine. the second most reactive would be oxygen

how do you write 652870000 in scientific notations ​

Answers

Answer:

9

6.5287×10

Explanation:This is the correct answer

Hereditary information is passed on from:
O nucleus to nucleus
O cell to cell
O cell to nucleus
O nucleus to cell

Answers

Answer:

D - Nucleus to Cell

Explanation:

Hope it helps!!

:D

The reaction between HCl and KOH results in an increase in temperature in the solution. Select the correct statement from the list below.

a) this is an endothermic reaction
b) this is a phase change reaction
c) this is a vaporization reaction
d) this is an exothermic reaction

Answers

Answer:

d) this is an exothermic reaction.

Explanation:

The reaction between HCl and KOH results in an increase in temperature in the solution. Select the correct statement from the list below.

a) this is an endothermic reaction . NO. This would cause a decrease in the temperature of the solution.

b) this is a phase change reaction . NO. All the species remain in the aqueous phase.

c) this is a vaporization reaction . NO. All the species remain in the aqueous phase.

d) this is an exothermic reaction. YES. The reaction releases heat, so it is exothermic.

Barium – 122 has a half-life of 2 minutes. Suppose you obtain a sample weighing 10.0 g and it takes 10 minutes to set up an experiment. How many grams of Barium – 122 will remain at the point when you begin the experiment

Answers

Answer:

0.3125 g

Explanation:

Given data:

Half life of barium-122 = 2 min

Mass of sample = 10.0 g

Mass of barium remain after 10 min = ?

Solution:

Number of half lives = Time elapsed / half life

Number of half lives = 10 min/ 2 min

Number of half lives = 5

At time zero = 10 g

At 1st half life = 10 g/2 = 5 g

At 2nd half life = 5 g/2 = 2.5 g

At 3rd half life = 2.5 g/2 = 1.25 g

At 4th half life = 1.25 g/2 = 0.625 g

At 5th half life = 0.625 g/2 = 0.3125 g

What is the force of a 10 kg bowling ball with an acceleration of 8 m/s/s?
0 18 N
0 80 N
O 2N

Answers

The answer is 80N

(hope this helps you!!!)

Which of the following contribute(s) to most of the mass of an atom? Question 5 options: A) Neutrons only B) Protons and electrons C) Protons and neutrons D) Protons only

Answers

Answer:

C

Explanation:

Hope this helps :)

What is the mass/volume percent of a solution with 7.5g of Na2CO3 dissolved in 20.0 g of water?
9.3 %
27%
7.5%

Answers

Answer:

7.5%

Explanation:

I just know it's that

Please help!!
This is a big part of my grade -----
Will make you brainliest******

Answers

Explanation:

U need to draw the graph first and make a line at 17 pennies, where the line of 17 pennies and your graph meet is the mass of it(at y axis)

Aqueous solutions of calcium chloride and sodium hydroxide are mixed together, forming solid calcium hydroxide and aqueous sodium chloride. Write the balanced chemical equation for the reaction. Phases are optional.

Answers

Answer:

CaCl₂ (aq) + 2NaOH (aq) —> Ca(OH)₂ (s) + 2NaCl (aq)

Explanation:

The equation for the reaction is given below:

CaCl₂ (aq) + NaOH (aq) —> Ca(OH)₂ (s) + NaCl (aq)

The above equation can be balance by as follow:

CaCl₂ (aq) + NaOH (aq) —> Ca(OH)₂ (s) + NaCl (aq)

There are 2 atoms of Cl on the left side and 1 atom on the right side. It can be balance by putting 2 in front NaCl as shown below:

CaCl₂ (aq) + NaOH (aq) —> Ca(OH)₂ (s) + 2NaCl (aq)

There are 2 atoms of Na on the right side and 1 atom on the left side. It can be balance by putting 2 in front of NaOH as shown below:

CaCl₂ (aq) + 2NaOH (aq) —> Ca(OH)₂ (s) + 2NaCl (aq)

Now, the equation is balanced.

Match the following terms and definitions.
1. major ecological grouping of plants and animals
food chain
biome
environmental factor
decomposers
2. bacteria and fungi that break down dead matter
a state of change in which the end result is equal or
3.
balanced
the basic relationships that show how a community of plants,
animals, and bacteria live and grow and how these living
4. things are dependent on each other as well as the Sun, soil,
and other nonliving parts of their environment; a cycle of
relationships
line of plants and animals that shows the order in which
5.
organisms are eaten
a condition or conditions of the nonliving surroundings, such
6.
as light, temperature, water, and so on
ecosystem
dynamic equilibrium

Answers

Answer:

major ecological grouping of plants and animals

food chain

*biome*

bacteria and fungi that break down dead matter

*decomposers*

a state of change in which the end result is equal or

balanced

*dynamic equilibrium*

the basic relationships that show how a community of plants,

animals, and bacteria live and grow and how these living

*ecosystem*

things are dependent on each other as well as the Sun, soil,

and other nonliving parts of their environment; a cycle of

relationships

line of plants and animals that shows the order in which

*Food chain*

organisms are eaten

a condition or conditions of the nonliving surroundings, such

*environmental factor*

Explanation:

Answer each of the following questions with increases, decreases, or does not change.
a) If the intermolecular forces in a liquid increase, the normal boiling point of the liquid increases .
b) If the intermolecular forces in a liquid increase, the vapor pressure of the liquid does not change .
c) If the surface area of a liquid increases, the vapor pressure increases .
d) If the temperature of a liquid decreases, the equilibrium vapor pressure increases .
Drag and drop your selection from the following list to complete the answer:
does not change decreases increases

Answers

Answer:

1) Increases

2) decreases

3) increases

4) decreases

Explanation:

When the intermolecular forces in a liquid increases, the greater vapour pressure of the liquid decreases accordingly.

Since the vapour pressure is proportional to temperature, as temperature increases, the vapour pressure increases alongside.

As intermolecular forces increases, the boiling point increases accordingly since more energy is required to break intermolecular bonds.

Lastly, the greater the surface area, tell greater the vapour pressure since more liquid surface area is now available.

Which of these would be classified as a chemical property that could be measured quantitatively?
Volume
Flammability
рн
Solubility

Answers

Answer:

рн

Explanation:

From the given choices, pH is the only chemical property that can be measured quantitatively.

A chemical property is one that tells us about what a substance can do as regards to whether or not the substance reacts with other substances.

Examples are flammability, rusting of iron, precipitation, decomposition of water e.t.c

pH is the degree of acidity or alkanility of a solution. It is usually determined quantitatively using a pH scaleThe scale is graduated from 1 to 14 1 to 7 is for acids7 is for neutral compounds7-14 is for alkalines.

A 57.07 g sample of a substance is initially at 24.3°C. After absorbing of 2911 J of heat, the temperature of the substance is 116.9 CWhat is the specific heat (SH) of the substance?

Answers

Answer:

Approximately [tex]0.551\; \rm J\cdot kg^{-1} \cdot \left(^\circ\! C \right)^{-1}[/tex].

Explanation:

The specific heat of a material is the amount of energy required to increase unit mass (one gram) of this material by unit temperature (one degree Celsius.)

Calculate the increase in the temperature of this sample:

[tex]\Delta T = (116.9 - 24.3)\; \rm ^\circ\! C= 92.6\; \rm ^\circ\! C[/tex].

The energy that this sample absorbed should be proportional the increase in its temperature (assuming that no phase change is involved.)

It took [tex]2911\; \rm J[/tex] of energy to raise the temperature of this sample by [tex]\Delta T = 92.6\; \rm ^\circ\! C[/tex]. Therefore, raising the temperature of this sample by [tex]1\; \rm ^\circ\! C[/tex] (unit temperature) would take only [tex]\displaystyle \frac{1}{92.6}[/tex] as much energy. That corresponds to approximately [tex]31.436\; \rm J[/tex] of energy.

On the other hand, the energy required to raise the temperature of this material by [tex]1\; \rm ^\circ\! C[/tex] is proportional to the mass of the sample (also assuming no phase change.)

It took approximately [tex]31.436\; \rm J[/tex] of energy to raise the temperature of [tex]57.07\; \rm g[/tex] of this material by [tex]1\; \rm ^\circ C[/tex]. Therefore, it would take only [tex]\displaystyle \frac{1}{57.07}[/tex] as much energy to raise the temperature of [tex]1\; \rm g[/tex] (unit mass) of this material by [tex]1\; \rm ^\circ \! C\![/tex]. That corresponds to approximately [tex]0.551\; \rm J[/tex] of energy.

In other words, it takes approximately [tex]0.551\; \rm J[/tex] to raise [tex]1\; \rm g[/tex] (unit mass) of this material by [tex]1\; \rm ^\circ \! C[/tex]. Therefore, by definition, the specific heat of this material would be approximately [tex]0.551\; \rm J\cdot kg^{-1} \cdot \left(^\circ\! C \right)^{-1}[/tex].

why is steel a mixture

Answers

Answer:

Steel is a mixture because iron does not mix with the carbon and the other components.

Answer:

Steel is a mixture because it does not have a set chemical compound formula. It's a mixture of iron and carbon fused together with other metals or nonmetals to create a mixture.

Explanation:

Steel is an alloy , a solid solution

Steel is a homogenous mixture. It is not a pure substance because it is made form more than one component.

Other Questions
!!PLEASE HELP QUICK!!Chauncy is paid $10 per hour. He works 2 hours a day for 5 days each week. How much money is Chauncy paid for his work each week? Which sentence can be used to answer the word problem? A Chauncy is paid $___B Chauncy works ___C Chauncy works ___D Chauncy is paid $___ What are the x and y-intercepts of the line described by the equation?2x + 4y = 12.4Enter your answers, in decimal form, in the boxes.x-intercept = y-intercept = Suppose you work for a large coffee distributor that has a secret coffee blend it sells to local stores. Youmix the Tanzanian blend with the Queen City blend, but always in the same proportion. Yesterday, youmixed 40 pounds of the Tanzanian blend with 8 pounds of the Queen City blend. Today, there is 20 poundsof the Tanzanian coffee left in stock. How many pounds of the Queen City coffee should you mix with it toget your secret blend? 12. It takes Daphne 25 minutes to assemble a model plane. During her workminutes for lunch and one 15 minute break. Which inequality could Daphne use to determine the number of model planes, p, she can assemble in her 8 hour work day?A. 25p 45 > 8B. 25p + 45 2 8C. 25p 45 < 480D. 25p + 45 < 480 You are a scientist and would like to know if a new fertilizer will help plants grow faster. What would the experimental group be?The plants that only get soilThe plants that only get waterThe plants that get different amounts of the new fertilizer Give the missing reasons for this proof (with picture) What is considered revenue recognition? Someone, please help. What is the range of the following numbers?12, 20,18,25, 6O A 5OB. 164O C. 18O D. 19O E. 25 a box is pushed along the ground with a force of 20N. If the box is pushed 0.5M.How much work done is on it? How did Pericles improve life in Athens? (2 examples) Admitting New Partner Who Contributes Assets After the tangible assets have been adjusted to current market prices, the capital accounts of Brad Paulson and Drew Webster have balances of $45,000 and $60,000, respectively. Austin Neel is to be admitted to the partnership, contributing $30,000 cash to the partnership, for which he is to receive an ownership equity of $35,000. All partners share equally in income. Required:a. Journalize the entry to record the admission of Neel, who is to receive a bonus of $5,000. b. What are the capital balances of each partner after the admission of the new partner?c. Why are tangible assets adjusted to current market prices prior to admitting a new partner? O SYSTEMS OF EQUATIONS AND MATRICESSolving a word problem using a 3x3 system of linear equations....Over the last 3 evenings, Latoya received a total of 96 phone calls at the call center. The second evening, she received 2 times as many calls as the thirdevening. The third evening, she received 8 fewer calls than the first evening. How many phone calls did she receive each evening? Describe Roman Mythology and discuss comparisons to Greek Mythology. Hiii can someone please pleaseeee help me with this. I would really appreciate it! Which of the following weapons was not available for use by the Mississippian people until after contact with Europeans?A)TomahawkB)Bow and ArrowC)SpearD)Musket 6) Sometimes it is difficult to read a piece of code and understand what the code will do. For this reason, you may want to add notes to yourself (or to someone else that may read the code) that show up in the code, but not when you run the program. What are these notes called and what symbol do you use to write them The point of maxmum profit is the point at which the marginal cost equals the- marginal revenue - market price - total revenue -production cost Rectangle ABCD has a length represented by the expression 2x-3, and a width represented by the expression 4x+5. Rectangle PQRS has a length represented by the expression x-1, and a width represented by the expression 3x+2. Which Expression can be used to represent the difference in the perimeter of Rectangle ABCD and Rectangle PQRS What would you say is okay for the government to record and monitor?Do they need certain reasons to do so?