The picture represents _________________.

A . Compounds

B . Mixture of Elements and Compounds

C. Mixture of Elements

D. Elements

E. Mixture of Compounds

The Picture Represents _________________.A . CompoundsB . Mixture Of Elements And CompoundsC. Mixture

Answers

Answer 1
B...................

Related Questions

A planetary explorer vehicle
on Earth weighs 1850
pounds, what would it weigh
on the surface of Neptune,
which has 1.2 times the
gravity of Earth?
A. more than on the Earth
B. less than on the Earth
C. the same as on Earth

Answers

Answer:

more

Explanation:

Answer:

A. More than on the Earth

Explanation:

What is the percent by mass in a solution with 10.0 grams of solute and 25.0 grams of solvent?

Answers

Answer:

Percent by mass of solute is (10/35) x 100 =  28.57%

Percent by mass of solvent is (25/35) x 100 = 71.43%

Explanation:

10.0 grams of solute

25.0 grams of solvent

Total Mass = 35 grams

percent by mass = (Mass A / Total Mass) x 100

Percent by mass of solute is (10/35) x 100 =  28.57%

Percent by mass of solvent is (25/35) x 100 = 71.43%

2
3
4
5
6
What did Virchow observe that led him to determine one of the main components of cell theory?

Answers

Answer:

In the year 1850, Rudolf Virchow was studying cells under a microscope, when he observed that cells were dividing and forming new cells. Realizing what he had observed, he understood that living cells reproduce new cells through division

This part of the nervous system is the decision-
maker for the rest of the nervous system. What is it called?
o Brain
o Sensory Neurons
O Motor Neuron
o Spinal Cord
Please help me thank you

Answers

Your answer is brain

What state of matter has indefinite volume and is compressible?

a. Gas

B. Liquid

C. Both Liquid and Gas

D. Solid

Answers

The answer is A. Gas

Which term should replace the question mark?

Answers

Answer:

Can you explain a little bit more?

Explanation:

what element must combine with the metal for oxidation to take place?

Answers

lithium with oxygen
Lithium with oxygen

How much less carbon does
natural gas release than
coal?

Answers

Answer:

natural gas releases 50 to 60 percent less carbon dioxide than coal

Explanation:

Natural gas is a fossil fuel, though the global warming emissions from its combustion are much lower than those from coal or oil. Natural gas emits 50 to 60 percent less carbon dioxide (CO2) when combusted in a new, efficient natural gas power plant compared with emissions from a typical new coal plant [1].

Let's say you added too much magnesium in the amount of 0.1594 g. How much 8.00 M HCl (in mL) would be required to decompose the excess Mg present?
Mg(s) + 2 HCl(aq) --> MgCl2(aq) + H2(g)

Answers

Answer:

1.65×10^-3 L or 1.65 mL

Explanation:

Number of moles of magnesium in the excess reagent= mass of excess reagent/ molar mass of magnesium

Mass of excess magnesium= 0.1594 g

Molar mass of magnesium= 24 gmol-1

Number of moles of magnesium= 0.1594/24 = 6.6×10^-3 moles

From the reaction equation;

1 mole of magnesium reacted with 2 moles of HCl

6.6×10^-3 moles of magnesium will react with 6.6×10^-3 moles × 2= 13.2×10^-3 moles of HCl

But we know that;

Number of moles of HCl= concentration of HCl × volume of HCl

Volume of HCl= number of moles of HCl/ concentration of HCl

Since concentration of HCl= 8.00M

Volume of HCl= 13.2×10^-3/8.00= 1.65×10^-3 L or 1.65 mL

Assign an oxidation number to each element in the reaction.
CO(g) + 2H2(g)
CH3OH(g)
In CO, the oxidation number of C is
and that of O is
In H2, the oxidation number of H is
In CH3OH, the oxidation number of C is
that of O is
and that of H is
DONE

Answers

Answer:

In CO, the oxidation number of carbon is +2 and that of oxygen is -2

In H2 the oxidation number of hydrogen is zero

In CH3OH, the oxidation state of carbon is -2, that of hydrogen is +1 and that of oxygen is -2

Explanation:

The oxidation number of an element in any compound is defined as the electrical charge that the element appears to have as determined by a set of arbitrary rules. These rules make it possible to calculate the oxidation number of an atom in a compound given the oxidation numbers of other atoms in the same compound.

In CO, the oxidation number of carbon is +2 and that of oxygen is -2

In H2 the oxidation number of hydrogen is zero

In CH3OH, the oxidation state of carbon is -2, that of hydrogen is +1 and that of oxygen is -2

please help me!!!!!!!! if the temperature of your ice is 32 percent Fahrenheit and your water is 68 Fahrenheit and you mixed the ice and the water together what temperature is your water?

Answers

Answer:

36 degrees farenheit


Balance the combustion reaction between octane and oxygen.

2C ₈ H ₁₈ + O ₂ → CO ₂ + H ₂ O

Answers

Answer:

The answer is 2C8H18 + 25O2 16CO2 + 18H2O .

(Correct me if I am wrong)

Which of the following is NOT an
example of matter?
a. clouds
b. gasoline
С. ice
d. light

Answers

Answer:

Which of the following are not examples of matter, well clouds are matter, gasoline is matter, ice is matter, so it would be light.

What are the units of measurement for atomic radius?

Answers

Answer:

Units used to measure atomic radius:

Angstroms (Å): This the most common unit used. Equivalent to 1.0 x 10-10 meters.

Nanometer (nm): Equivalent to 1.0 x 10-9 meters.

Picometer (pm): Equivalent to 1.0 x 10-12 meters.

A student is trying to dissolve 20 grams of sugar in a beaker containing 250 milliliters of water at room temperature. What can the student do to make the sugar dissolve faster in the water?

Answers

Answer:

They can warm up the water. Sugar dissolves much faster in warm/hot water.

A perfect example of this is when you put sugar in your hot coffee/tea -> it will dissolve almost immediately. If you put sugar in cold water, you will have to stir it for quite some time before it dissolves.

what is characteristics of the 6kingdoms

Answers

Answer:

Archaea, Bacteria, Protista, Fungi, Plantae, and Animalia

What is characteristics of the 6 kingdoms.

6 kingdoms of what? Are you talking about biology?

If yes I assume you're talking about the defitions for the animal kingdom made by Woese and his colleagues in 1977.

Eubacteria:  Single-celled bacterial organisms.

Archaebacteria: Single celled bacterial organisms that live in extreme enviroments

Protista : Single-celled organisms more complex than bacteria

Plantae: Multi-celled, complex organisms that produce their own food

Fungi: Multi-celled organisms that don't produce their own food

Animalia: Complex, multi-celled, organisms that consume other organisms for food.

Which state of matter is by high density and definite shape?

A. Solid

B. Liquid

C. Both Liquid and Solid

D. Gas

Answers

Both liquids and solid

Answer:

Solid

Explanation:

Solid has a definite shape and its molecules have high density.

Hope this will help you.

A compound contains 57.2 percent carbon, 6.1 percent hydrogen, 9.5 percent nitrogen, and 27.2 percent oxygen. What the empirical formula of the compound?

Answers

Answer:

So the empirical formula is C14H18N2O5

Explanation:

C = 57.2% = 12g/mol

H = 6.1% = 1g/mol

N = 9.5% = 14g/mol

O = 27.2% = 16g/mol

Empirical Formula for compound hmm

Assume

C = 57.2g

H = 6.1g

N = 9.5g

O = 27.2g

So we have

C = 57.2g/12g =  4.76  moles

H = 6.1g/1g      =  6.10   moles

N = 9.5g/14g   =  0.68  moles

O = 27.2g/16g =  1.70   moles

Divide each mole value by the smallest number of moles calculated.  Round to the nearest whole number.

C =  4.76  moles / 0.68 moles = 7

H = 6.10   moles / 0.68 moles = 9

N = 0.68  moles / 0.68 moles = 1

O = 1.70   moles / 0.68 moles = 2.5

Ok so we now have the ratios but for O it's 2.5, have to be whole numbers so we will need to double all the numbers.

C = 14

H = 18

N =  2

O =  5

So the empirical formula is C14H18N2O5

What is the name of the body part that passes messages
from the sensory neurons to the brain?
o Lungs
O Nerve Cells
o Brain
o Stimulus please help me thanks

Answers

The answer would be nerve cells. Hope that helps you!

Subtract to find the temperature changes
for the water and the metal.
AT (water) =
AT (metal) =


Answers

Answer:

Explanation:

The temperature changes for the water and the metal is

ΔT (water) = 4.7°C

ΔT (metal) = - 72.9°C

Specific Heat

The quantity or amount of heat per unit mass required to raise the temperature of a body by one degree Celsius is known as specific heat. The unit of specific heat are joules or calories per gram per degree Celsius. Specific heat is an intensive property.

Calculate the temperature changes

Relationship between temperature and heat is expressed as:

Q = mcΔT

where,

Q is heat energy in Joules (J)

m is mass (in grams)

c is specific heat in J/g°C

ΔT is change in temperature

Now calculate the temperature changes for the water

ΔT (water) = T(final) - T(initial)

                 = 27.1 - 22.4

                 = 4.7°C

Now calculate the temperature changes for the metal

ΔT(metal) = T(final) - T(initial)

                = 27.1 - 100

                = -72.9°C

Thus, from the above calculation we can see that the temperature changes for the water and the metal is

ΔT (water) = 4.7°C

ΔT (metal) = - 72.9°C

Learn more about the specific heat here: https://brainly.com/question/21406849

#SPJ2                

1. Identify whether each of the elements is a metal, non-metal, or metalloid:
Ruthenium: Neon:
Germanium: Neptunium:
Iodine: Strontium:
Cesium: Europium:

Answers

Answer:

neon - non metal

Explanation:

Answer:

Ruthenium → metalloidNeon → non-metalGermanium → metalloidNeptunium → metalIodine → non-metalStrontium → metalCaesium → metalEuropium → metal

The atomic number of an atom is
a) The mass of the atom
b) The number of protons added to the number of neutrons
c) The number of protons
d) Negatively charged

Answers

Answer:

b, the number of protons added to the number of neutrons

Explanation:

The type of radioactive decay in which the mass number and atomic number remain unchanged is (2 points) Select one: a. beta radiation. b. alpha radiation. c. positron radiation. d. gamma radiation.

Answers

Answer:

d.

Explanation:

a. beta radiation - electrons that have negative charge, and when they leave a nucleus , the charge or atomic number of the nucleus will change.

b. Alpha radiation - nuclei of He, atomic number and mass number will be changed.

c. positron radiation - positrons are similar to electrons but have positive charge, so , the charge or atomic number of the nucleus will change.

d. gamma radiation is electromagnetic waves, does not have charge and mass.

Answer:

the answer is d. gamma radiation

Explanation:

A5.3 * 1012 kg satellite is 1.800 m from another satellite that has a mass of 3.5 x 108 kg. What is the gravitational
force between the satellites?
3.82 x 10N
6.87 x 107N
5.72 % 1014 N
1.03 * 1018 N​

Answers

Answer:

The gravitational  force between the satellites is [tex]3.81\times 10^{10}\ N[/tex].

Explanation:

Mass of satellite 1, [tex]m_1=5.3\times 10^{12}\ kg[/tex]

Mass of satellite 2, [tex]m_2=3.5\times 10^8\ kg[/tex]

Distance between masses is 1.8 m

It is required to find the gravitational  force between the satellites. The formula used to find the force between two masses is given by :

[tex]F=G\dfrac{m_1m_2}{r^2}\\\\F=6.67\times 10^{-11}\times \dfrac{5.3\times 10^{12}\times 3.5\times 10^8}{(1.8)^2}\\\\F=3.81\times 10^{10}\ N[/tex]

So, the gravitational  force between the satellites is [tex]3.81\times 10^{10}\ N[/tex].

Choose the correct coefficients to balance the following equation: __CaCO3 + __HC; Produces __CaCl2 + __CO2 + __H2O

Answers

Answer:

CaCO3 + 2HCl = CaCl2 + CO2 + H2O

Explanation:

CaCO3 + HCl = CaCl2 + CO2 + H2O

Error in equation should be HCl on left hand side not HC

Left Side

Ca = 1

C = 1

O = 3

H = 1

Cl = 1

Right Side

Ca = 1

C = 1

O = 3

H = 2

Cl = 2

So we'll try and balance the Chlorine

CaCO3 + 2HCl = CaCl2 + CO2 + H2O

Left Side

Ca = 1

C = 1

O = 3

H = 2

Cl = 2

Right Side

Ca = 1

C = 1

O = 3

H = 2

Cl = 2

Yay it worked

Calculating pH
DETERMINE THE PH OF EACH SOLUTION
» [H] = 1 x 10-9M
pH =
» POH = 3
pH =
» [OH ) = 1 x 10-2 M
pH =
» POH = 7
pH =

Answers

Answer:

The answer to your question is given below

Explanation:

1. Data obtained from the question include:

Hydrogen ion concentration, [H+] = 1x10^-9M

pH =..?

pH = - log [H+]

pH = - log 1x10^-9

pH = 9

2. Data obtained from the question include:

pOH = 3

pH =.?

Recall:

pH + pOH = 14

pH + 3 = 14

Collect like terms

pH = 14 - 3

pH = 11

3. Data obtained from the question include:

Hydroxide ion concentration, [OH-] = 1x10^-2M

pH =..?

First, we shall determine the pOH. This is illustrated below

pOH = - Log [OH-]

pOH = - Log 1x10^-2

pOH = 2

Finally, we can obtain the pH as follow:

pH + pOH = 14

pOH = 2

pH + 2 = 14

Collect like terms

pH = 14 - 2

pH = 12

4. Data obtained from the question include:

pOH = 7

pH =.?

Recall:

pH + pOH = 14

pH + 7 = 14

Collect like terms

pH = 14 - 7

pH = 7

Which gas relights a glowing splint? *

C hydrogen
A ammonia
B carbon dioxide
D oxygen

Answers

Answer:

Oxygen

Explanation:

A glowing splint applied to a sample of gas "oxygen" will relight.

A 390 mL solutions of 4.6 M HCl is left out over the weekend and 74 mL of solvent evaporates. What is the new concentration of HCl?

Answers

Answer:

5.7 M

Explanation:

You have .390 L of 4.6 M HCl.

.390 L * 4.6 mol/L = 1.794 mol HCl

.390-.074=.316 L solvent remaining

1.794 mol/.316 L=5.7 M HCl

Most scientists recommend reducing carbon dioxide emissions. Less carbon dioxide in the atmosphere would be expected to?

Answers

Answer:

the air would be much cleaner and better for us to breath.

Explanation:

A transformer has ten turns of wire on the input side and 50 turns of wire on the output side. If the input voltage is 120 V, what will the output voltage be?

Answers

Answer:

600 V

Explanation:

The transformer equation helps us to calculate the relationship between the ratio of the number of turns of coils in the input and output sources to their respective voltages.

It states that the ratio of the secondary to primary voltages in a transformer equals the ratio of the number of loops in their coils.

Number of input turns/Number of output turns = input voltage/output voltage

10/50 = 120V/output voltage

output voltage = 120 V/0.2

Output voltage = 600 V

Other Questions
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A company started the year with the following: Assets $121,000; Liabilities $41,500; Common Stock $71,500; Retained Earnings $8,000. During the year, the company earned revenue of $6,400, all of which was received in cash, and incurred expenses of $3,700, all of which were unpaid as of the end of the year. In addition, the company paid dividends of $2,400 to owners. Assume no other activities occurred during the year. The amount of liabilities at the end of the year is Here are two squares, A and B. The length of the side of square A is 50% of the length of the side of square B Consider each of the following independent scenarios:a.Terrin Belson, plant manager for the laser printer factory of Compugear Inc., brushed his hair back and sighed. December had been a bad month. Two machines had broken down, and some factory production workers (all on salary) were idled for part of the month. Materials prices increased, and insurance premiums on the factory increased. 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