Is a diamond a homogeneous or heterogeneous mixture or a substance

Answers

Answer 1

Answer:

heterogeneous

Explanation:

It's a heterogeneous mixture. Diamond is made of just one element: carbon. Each carbon atom in diamond is connected to four other carbon atoms, in a crystal that extends on and on. There are other forms of pure carbon where the atoms are bonded differently, notably charcoal and graphite.


Related Questions

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 :)

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)

Discuss the relationship between atoms, elements and compounds. Include in your discussion if these are mixtures or pure substances and why.

Answers

Answer:

Elements are the simplest complete chemical substances. Each element corresponds to a single entry on the periodic table. An element is a material that consists of a single type of atom. Each atom type contains the same number of protons.

Chemical bonds link elements together to form more complex molecules called compounds. A compound consists of two or more types of elements held together by covalent or ionic bonds.

Explanation:

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.

A black object appears black because it reflects all light , and does not absorb any light. True or False

Answers

Answer:

False

Explanation:

It is the other way round, a black object appears black because it absorbs all the wavelength of light and does not reflect any light.

A black bucket will appear black because, it absorbs all wavelength of light incident on it. No other wavelength is reflected from the surface of the body. A black color suggests that a body is not reflecting any color. Instead such a body absorbing all the colors. For a white object, they reflect all the wavelength that is incident upon them.

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

PLEASE HELP AND FAST!!!

Answers

The last one should be right
reacts with nitric acid !

What is the correct systematic name for ICl5?

Answers

Answer:

iodine pentachloride

Explanation:

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

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.........

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

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.

List the following bonds in order of increasing ionic character: potassium to iodine, carbon to oxygen, lithium to fluorine, boron to fluorine. (Enter the two elements of the bond into the appropriate box: KI, CO, LiF, BF)

Answers

Answer:

CO < BF < KI < LiF

Explanation:

The magnitude of ionic character in a bond is dependent on the magnitude of electronegativity difference between the atoms in the bond.

Remember that no bond is 100% ionic or covalent according to Linus Pauling. However, the percentage ionic character depends on electronegativity difference between the bonding atoms and polarizability (Fajan's rules).

Between LiF and KI, Fajan's rules become very important. The Li^+ is small and highly polarizing.  The stronger the polarising power of the cation and the higher the polarisability of the anion the more covalent character is expected in a bond

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

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!!!)

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 do you write 652870000 in scientific notations ​

Answers

Answer:

9

6.5287×10

Explanation:This is the correct answer

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

) Do you think the pH of 1,0 M tri-methyl ammonium (CH3)3NH+, pKa = 9.80, will be higher or lower than that of 1.0 M phenol, C6H5OH? What is the difference in pH values for the two acids?

Answers

Answer:

1. The pH of 1.0 M trimethyl ammonium (pH = 1.01) is lower than the pH of 0.1 M phenol (5.00).

2. The difference in pH values is 4.95.

Explanation:

1. The pH of a compound can be found using the following equation:

[tex] pH = -log([H_{3}O^{+}]) [/tex]

First, we need to find [H₃O⁺] for trimethyl ammonium and for phenol.

Trimethyl ammonium:

We can calculate [H₃O⁺] using the Ka as follows:

(CH₃)₃NH⁺ + H₂O  →  (CH₃)₃N + H₃O⁺    

1.0 - x                               x           x  

[tex]Ka = \frac{[(CH_{3})_{3}N][H_{3}O^{+}]}{[(CH_{3})_{3}NH^{+}]}[/tex]

[tex] 10^{-pKa} = \frac{x*x}{1.0 - x} [/tex]

[tex] 10^{-9.80}(1.0 - x) - x^{2} = 0 [/tex]    

By solving the above equation for x we have:  

x = 0.097 = [H₃O⁺]

[tex] pH = -log([H_{3}O^{+}]) = -log(0.097) = 1.01 [/tex]                                      

Phenol:

C₆H₅OH + H₂O → C₆H₅O⁻ + H₃O⁺

1.0 - x                        x             x

[tex]Ka = \frac{[C_{6}H_{5}O^{-}][H_{3}O^{+}]}{[C_{6}H_{5}OH]}[/tex]

[tex] 10^{-10} = \frac{x^{2}}{1.0 - x} [/tex]

[tex] 1.0 \cdot 10^{-10}(1.0 - x) - x^{2} = 0 [/tex]

Solving the above equation for x we have:

x = 9.96x10⁻⁶ = [H₃O⁺]

[tex] pH = -log([H_{3}O^{+}]) = -log(9.99 \cdot 10^{-6}) = 5.00 [/tex]

Hence, the pH of 1.0 M trimethyl ammonium is lower than the pH of 0.1 M phenol.

2. The difference in pH values for the two acids is:

[tex] \Delta pH = pH_{C_{6}H_{5}OH} - pH_{(CH_{3})_{3}NH^{+}} = 5.00 - 1.01 = 4.95 [/tex]

Therefore, the difference in pH values is 4.95.

I hope it helps you!

the moon lost its volcanic __ beacuse of its weak gravity

Answers

Answer:

Explanation:

the moon is still volcanic

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

All living things are made of one or more cells. Which is true of all cells?

Answers

They all have cytoplasm.

Hope this helps!

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

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%

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:

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

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?)

how many grams of oxygen are there in 66.2 g of nitrous acid

Answers

Answer:

15.9994 grams

You can view more details on each measurement unit: molecular weight of Oxygen or grams The molecular formula for Oxygen is O. The SI base unit for amount of substance is the mole. 1 mole is equal to 1 moles Oxygen, or 15.9994 grams.

Explanation:

Answer:

First you need to know the Chemical formula for Nitrous acid which is HNO₂

Explanation:

Is air a homogeneous heterogeneous mixture or substance

Answers

Answer:

look at the explanation

Explanation:

The air that you breathe is a homogeneous mixture of oxygen, nitrogen, argon, and carbon dioxide, along with other elements in smaller amounts. Because each layer of the Earth's atmosphere has a different density, each layer of air is its own homogeneous mixture.

Hope this helps. :)

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

Other Questions
Write an equation of the line passing through the point (8,-5) that is parallel to the line 2x 6y=-3.y = mx + b The Thoughts of an OrnithologistWilliam Princeton(1) Ive spotted a young female Peregrine Falcon, but cannot read the two-digit code on her vid band. Because the Peregrine travel up to 15,000 miles each year, these colored leg bands are essential to identifying and tracking the birds. This bird has fantastic markingsthrough my binoculars, I can clearly make out the black mustache mark common to this species. I calculate the birds speed to be twenty-five miles per hourshe merely coasts while monitoring the mountainside for a tasty meal. Once the predator has focused in on her prey, she dramatically descends into that spectacular hunting stoop. At this moment, shes the fastest animal on the planetscientists have clocked Peregrines at speeds of 200 miles per hour during this hunting dive. Im on cloud nine as I silently observe the birds victory.(2) As a child, I was obsessed with the study of birds, known as ornithology. I spent eve What number should be subtracted from 3/7 to get 5/7 Penelope has dealt with many years of turmoil at home while Odysseus has been away, trying to prevent the marriage to the suitors and hoping for her husbands return. She finally finds hope when the beggar tells her Odysseus will soon return. Write a letter to Odysseus from Penelopes perspective, including her thoughts and feelings on what she has endured. Be sure to include details from the story. (03. LC) Which of the following is one way the U.S. Constitution expanded the power of the central government? Read the following excerpt fromAesops Fables.Which two sentences best describe the personality of the traveler in the tree?The Bear and the TravelersTwo Travelers were on the road together, when a Bear suddenly appeared on the scene.Before he observed them, one made for a tree at the side of the road, and climbed up into the branches and hid there.The other was not so nimble as his companion; and, as he could not escape, he threw himself on the ground and pretended to be dead.The Bear came up and sniffed all around him, but he kept perfectly still and held his breath:for they say that a bear will not touch a dead body.The Bear took him for a corpse, and went away.When the coast was clear, the Traveler in the tree came down, and asked the other what it was the Bear had whispered to him when he put his mouth to his ear.The other replied, "He told me never again to travel with a friend who deserts you at the first sign of danger."The traveler is a bad friend.The traveler is smart.The traveler is selfish.The traveler is friendly.The traveler is foolish. The pKb values for the dibasic base B are pKb1=2.10 and pKb2=7.54. Calculate the pH at each of the points in the titration of 50.0 mL of a 0.60 M B(aq) solution with 0.60 M HCl(aq). What is the function of an animal cell I really need help! If an orthocenter lies inside of a triangle, then the triangle must be O isosceles. O acute. obtuse. o right What is the acceleration of a 7 kg mass if a force of 68.6 N is used to move it toward earth what is rivoecsd unscrambeled? Why was the Democratic Party split in 1860?economicstariffswestern settlementslavery What is this variable? 3/4a 6 = 4+3a giant lenten lineshapeformcolorvaluetexturespace What are the five steps to understanding how foreign born labor impacts native born workers? Consider the reaction of 30.0 mL of 0.235 M BaI with 20.0 mL of 0.315 M NaPO.Which of the following compounds would be the precipitate that forms?a) Bal2b) Na3PO4c) Ba3(PO4)2d)Nal How is government in the United States today different from government in ancient Athens? O The United States is a direct democracy. The United States allows citizens to vote. The United States is a republic. O The United States has a unicameral legislature. Write a sentence using the word diction; include one adjective in your sentence. A rectangle has a length of 64 cm. The rectangle is reduced by a scale factor of 3/4. What is the length of the reduced rectangle? Which of the following best describes hair? O Hair is made of mostly tightly packed living cells Hair does not help control body temperature. O Hair growth occurs in the hair follicle O Hair grows at 2.5mm a month.