Mantle convection is a process of that creates circular currents in the asthenosphere. As a result, the plates slowly move.

Answer:

45.4249 L

Explanation:

E85 is the mixture of gasoline and ethano. It consist of 15 percent gasoline and 85 percent ethanol.

Given data:

volume = 12 gal

density = 0.785 g/ ml

volume in L = ?

Solution:

1 gal = 3.78541 L

12× 3.78541 = 45.4249 L

Answer:

3700 mL; 3700 cm³

Explanation:

1. Volume in millilitres

[tex]V =\text{3.70 L} \times \dfrac{\text{1000 mL}}{\text{1 L}} = \text{ 3700 mL}[/tex]

2. Volume in cubic centimetres

1 mL = 1 cm³, so

[tex]V = \text{3700 mL} \times \dfrac{1\text{ cm}^{3}}{\text{1 mL}} = \text{3700 cm}^{3}[/tex]

The volume of the liquid in mL is 3700mL and in cm3 is 3700 cm3.

First, to change the unit of a value from liters to milliliters, it is necessary to follow the following relationship:

                                           [tex]1 L = 1000mL[/tex]

Thus, the calculation can be performed:

                                           [tex]3.70L \times 1000 = 3700 mL[/tex]

Finally, to change the unit from mL to cm3 we have:

                                           [tex]1 cm^{3} = 1 mL[/tex]

                                         [tex]3700 mL \times 1 = 3700 cm^{3}[/tex]

So, the volume of the liquid in mL is 3700mL and in cm3 is 3700 cm3.

Learn more about measurement transformation in: brainly.com/question/10667910

Answer:

option B= anion (-1)

Explanation:

The halogens are present in the P- block of periodic table. There are thirty five elements present in p-block. The halogens are present in group seventeen. Their are seven electrons are present in valance sheet. All halogens require one electron to complete the octet and form anion carry -1 charge.

Halogens include following elements:

Fluorine, chlorine, bromine, iodine and astatine.

The halogens mostly form single bond with the other elements by gaining one electron and -1 charge. These are most reactive non-metals.

Properties of some halogen elements:

Fluorine:

1. It is yellow in color.

2. It is flammable gas.

3. It is highly corrosive.

4. Fluorine has pungent smell.

5. It's reactions with all other elements are vigorous except neon, oxygen, krypton and helium.  

Chlorine:

1. It is greenish-yellow irritating gas.

2. Its melting point is 172.2 K.

3. Its boiling point is 238.6 K.

4. It is disinfectant and can kill the bacteria.

5. It is also used in manufacturing of paper, paints and textile industries.

Iodine:

1. It is present in solid form.

2. It is crystalline in nature.

3. It is very corrosive and has pungent odor.

4. It can not react with oxygen and nitrogen.

An ion is formed when an atom gains or loses electrons.

Answer:

lose or gain electrons

Answer:

C

Explanation:

A physical change is when the form of the matter is just altered. While a chemical change results from a chemical reaction. No reaction is happening during the mixing of the two colors [nothing is boiling, freezing, evaporating, melting ext.] , but after you mix them the end result does look different. That only because we changed the physical properties of it.

(B is not a physical change because the baking powder inside of the cake must under go a reaction that causes the cake to rise. )

Answer:

C. A blue liquid and a yellow liquid mix and make a green liquid.

Explanation:

A physical change is a change in which chemically a substance remains the same but a change in state of matter may occur. It is a reversible change i.e. the substance can be converted into the original state even after the change has occurred. As per option c even if a blue liquid has been mixed with a yellow liquid to produce a green liquid we can still separate both the liquids using a physical method of separation to get the original liquids back.

Other options are wrong because they are examples of chemical change in which the change is irreversible and we can never get the original substance back by any means because a reaction has changed the substance entirely.

Answer: divide by 946.353

= 1.58 x 10^-4 or 0.000159

Explanation:

Answer:

Option C cooking oil is not heterogenous mixture

Explanation:

Mixture is a combination more than two substances and are not chemically combined.

It is of two types Homogenous mixture and heterogenous mixture

Homo means “same”.

Hetero means” different”

Homogenous mixture is a mixture which looks uniform throughout

Examples Cheese, salt solution, air, 18 carat gold

Heterogenous mixture is a mixture which looks non uniform throughout

.Examples Pizza, trail mix, salad, A mixture of oil and water

Answer:

Water

Explanation:

A compound can be defined as the bonding of two or more atoms, where at least two are different types of atoms. That is, they are atoms from more than one element. Water fits this definition as it is the bonding between two hydrogen atoms and one oxygen atom, with chemical formula H2O. Iodine and gold are elements and therefore are only single atoms. Sand is classified as a mixture and therefore is not the correct option.

1,000 times the base unit is kilo

1/1,000,000 of the unit base is micro

1/100 of the base unit is centi

1,000,000 times the base unit is mega

1/1,000 of the base unit is milli

1/1,000,000 of the base unit is nano

hope this helps :)

Answer:

Na

Explanation:

To find the limiting reactant we must first write the balanced chemical reaction. It must be correctly balanced so that we can find the proper mole ratios.

2 Na + H₂ → 2 NaH

After this we will convert our measurements to moles. For mass we do this by dividing by the molar mass.

6.75g ÷ 22.99 = 0.294mol Na

3.03g ÷ 2.02 = 1.50mol H₂

Now that we have the moles of each of the reactants, we can multiply them by their mole ratio with a reactant.

0.294mol Na × [tex]\frac{2 Na}{2 NaH}[/tex] = 0.294mol NaH

1.50mol H₂ × 2/1 = 3.00mol NaH

Na is our limiting reagent because it makes the smaller amount of moles.

To find the grams of Hydrogen in 1.52 grams of acetic acid, calculate the fraction of acetic acid's weight that is made up of Hydrogen (approximately 6.7%), then multiply this by the weight of the acetic acid. Thus, there would be approximately 0.102 grams of Hydrogen in 1.52 grams of acetic acid.

In order to determine the grams of Hydrogen in 1.52 grams of acetic acid, we first need to know the molecular weight of acetic acid (C2H4O2), which is about 60.05 g/mol. Acetic acid has 4 Hydrogen atoms. Each Hydrogen atom has an atomic weight of approximately 1.01 g/mol. Therefore, the total weight of Hydrogen in one molecule of acetic acid is 4.04 g/mol.

Next, we find the fraction of the weight of acetic acid that is made up of Hydrogen by dividing the total weight of Hydrogen by the molecular weight of acetic acid. So, 4.04 g/mol divided by 60.05 g/mol equals approximately 0.067 or 6.7%.

Finally, we multiply the weight of the acetic acid (1.52 grams) by the fraction that is Hydrogen (0.067). That's about 0.102 grams. Therefore, in 1.52 grams of acetic acid, there would be approximately 0.102 grams of Hydrogen.

https://brainly.com/question/32423379

#SPJ11

Answer:

A

Explanation:

You always want to make the number two digits, and then multiply by ten to however many zeroz

Answer:

5.6 x 10-5

Explanation:

Answer:

75kg    

Explanation:

Given:

Force of gravity(F) = 1.85 x 10⁻⁹N

distance between Tim and John = 18m

Mass of Tim = ?

Unknown:

Mass of John = ?

Solution

Newton's law of universal gravitation states that every particle of matter in the universe attracts every other particle with a force that is directly proportional to the product of the masses of the particles and inversely proportional to the square of the distance between them.

i.e                            

                          F =G[tex]\frac{m_{1} m_{2}}{r^{2} }[/tex]

let

                     m₁ represent mass of Tim

                     m₂ mass of John

                    G is the universal gravitation constant = 6.67 x 10⁻¹¹Nm²kg⁻²

                    r is the distance seperating them

The unknown is m₂ and we should make it the subject of the expression:

               m₂  = F [tex]\frac{r^{2} }{m_{1} }[/tex] x [tex]\frac{1}{G}[/tex]

m₂ = [tex]\frac{1.85 x 10^{-9}  x  18^{2}  }{G x 120}[/tex]

m₂ = 75kg      

Answer:

V = 43.8cm³

Explanation:

To calculate the volume of the sample we must first make sure the density and mass are in compatiple units. We can do this by changing the density to g/cm³ or the mass to kg.

[tex]\frac{921kg}{1m3}[/tex] × [tex]\frac{1000g}{1kg}[/tex] × [tex]\frac{1m3}{1000000cm3}[/tex] = 0.921g/cm³

Now we can use this and the mass given to get volume.

[tex]\frac{0.921g}{1cm3}[/tex] = [tex]\frac{40.3g}{V}[/tex]

40.3g = (0.921g)(V)

V = 43.8cm³

V = 43.8cm³

Mass per unit volume is known as density.

To calculate the volume of the sample we must first make sure the density and mass are in units. We can do this by changing the density to g/cm³ or the mass to kg.

[tex]921 kg/m^{3} /times\frac{1000\ g}{1\ kg} \times\frac{1\ m^{3} }{1000000\ cm^{3} } =0.921\ g/cm^{3}[/tex]

Now we can use this and the mass given to get volume.

[tex]\frac{0.921\ g}{1\ cm^{3} } =\frac{40.3\ g}{V} \\\\ V=43.8\ cm^{3}[/tex]

To know more about:-

brainly.com/question/25038476

Answer: Acceleration of the ball in the given system is 5 meter per Second Square

The laws of motion are used to determine various aspects of an object in motion.

Explanation:

Applying the first law of motion to calculate acceleration; if formula used in first law is given as [tex]v=u+at[/tex]

Here we have a final velocity as 40 meter per second and initial velocity as 20 meter per second and time span is given as 2 second applying the given values in the given equation and finding the value of a

                            [tex]30=20+a \times 2 = a=5 m/s^2[/tex]

Answer:

Centripetal acceleration is 47 m/s²

Explanation:

It is given that,

Radius of the circle, r = 1.8 meters

The velocity of the ball, v = 9.2 m/s

We have to find the centripetal force of a ball on a string that is whirled horizontally over a boy’s head. It is given by :

So, the centripetal acceleration of the ball on a string is 47 m/s². Hence, the correct option is (E).                        

Answer:

Explanation:

Kinetic energy is the energy due to changes in position of a body. It is always with regards to motion of a body.

Potential energy on the other hand is the energy at rest of a body.

To estimate kinetic energy, we use the formula:

      K.E =  [tex]\frac{1}{2}m v^{2}[/tex]

where m is the mass of the body and v is the velocity of the object.

mass is 5kg and velocity is 5ms⁻¹

      K.E =  [tex]\frac{1}{2}5 x  5^{2}[/tex]

      K.E = 62.5J

for the object at rest;

    potential energy is calculated:

    P.E = mgh

where m is the mass, g is the acceleration due to gravity and h is the height

m is 5kg, h is 2 and g is 9.8

    P.E = 5 x 9.8 x 2 = 98J

The moving object has kinetic energy with the object  at rest having potential energy.

The moving object has kinetic energy with the object  at rest having potential energy.

Answer:

V1= 0.305L

Explanation:

To find the initial volume of 1.25M potassium fluoride needed to make tge dilution specified in the question, we can use: C1 × V1 = C2 × V2

Since the question wants the volume in litres, convert 455 mL to L

455/ 1000

= 0.455 L

Now make the substitution

1.25 × V1 = 0.838 × 0.455

Rearrange to make V1 the subject

V1=

[tex] \frac{0.838 \times 0.455}{1.25 } = 0.305 [/tex]

Answer:

0.305

Explanation:

0.305

The total number of electrons that can occupy the d-sublevel is 10.

So, option third is correct one.

learn about subshell,

https://brainly.com/question/19221869

#SPJ2

Answer:

D and ionExplanation:

An ion is not considered a fundamental particle of an atom; rather, it is an atom or molecule with a net electrical charge. Electrons, protons, and neutrons are the basic atomic particles.

The particle within an atom that does not belong to the list is D an ion. Atoms are primarily composed of three basic particles: A a proton, B a neutron, and C an electron. An ion on the other hand, represents an atom or molecule with a net electrical charge due to the loss or gain of one or more electrons, which is not a fundamental particle of an atom.

https://brainly.com/question/2102349

#SPJ3

Answer:

what are stars made of?

Explanation:

that's what google says

Answer: 2, 4

Explanation:

Carbon varies, so it can have either 2 or 4 electrons

Answer:

2, 4

Explanation:

Answer:

A thermometer is the appropiate tool to use.

Explanation:

! !

your answer is !

(A theromometer!)

Hope this helps

Answer:

Their similarity is that they have the same number of protons. Their difference is that they have different number of neutrons.

Explanation:

They are isotopes of the same element.

Answer:

2

Explanation:

The change of state occurs at a constant temperture and pressure. In the grahp we can see while the time passes, the temperature doesn't change.

The rect number 4 correspond to a liquid-gas phase

Answer : The stage 2 shows the substance in both the solid phase and the liquid phase.

Explanation :

In the given phase diagram,

Stage 1 : It shows the solid state of a substance.

Stage 2 : It shows the melting and freezing process of a substance. It means that when the phase changes from solid state to liquid state at constant temperature is know as melting process and when the phase changes from liquid state to solid state at constant temperature is know as freezing process.

Stage 3 : It shows the liquid state of a substance.

Stage 4 : It shows the evaporation and condensation process of a substance. It means that when the phase changes from liquid state to gaseous state at constant temperature is know as evaporation process and when the phase changes from gaseous state to liquid state at constant temperature is know as condensation process.

Stage 5 : It shows the gaseous state of a substance.

Hence, from the above information we conclude that the stage 2 shows the substance in both the solid phase and the liquid phase.

Answer:

The length of the fence is 22.5ft and the width of the fence is 7.5ft.

Explanation:

To solve this problem we will turn this question into an equation.

The equation for the perimeter of a rectangle is 2l + 2w = perimeter.

In the question we were given the perimeter so we can go ahead and plug this in.

2l + 2w = 60

In the question we are also told that the fence is 3 times as long as it is wide. This means that 1l = 3w. We can now subsitute l for 3w so that we only have one variable.

2(3w) + 2w = 60

Now we can simply use algebra to solve for w.

6w + 2w = 60

8w = 60

w = 7.5

Now that we know the value of w we can find the value of l since we know 1l = 3w.

l = 3w

l = 3(7.5)

l = 22.5

The length of the fence is 22.5ft and the width of the fence is 7.5ft.

Answer:

28.497 cm3

Explanation:

Formula

D=m/v

Given data:

density = 19.3g/cm3

mass = 550 g

Now we will put the values in formula:

V=m/d

V=550 g/ 19.3 g/cm3  = 28.497 cm3

So the volume of gold is 28.497 cm3.

Answer:

At the same temperature of 0°C, the density (mass per volume) of ice is 0.9187 gram per cubic centimeter (g cm-3 or g/cm3) while that of liquid water is 0.9998 g cm-3 (Cohen et al. 2003). The lesser density means that ice contains lesser mass (quantity of matter) per unit of volume. It also means that the molecules of water are less compressed per unit volume of ice. Another way of saying it is that ice is less compact than liquid water having the same volume.

Answer:

Volume increase by 8.70% and volume of 500 mL of water when completely frozen is 543 mL

Explanation:

Answer:

Herbivores

Members of the same species living in the same plac at the same time

Abiotic Factors

grasses → shrubs → softwood trees → hardwood trees

lichens → grass → shrubs → trees

the sustainability of ecosystems is decreasing regardless of protected areas.

an increase in the islanders' consumption of land and migratory birds, resulting in a decrease in the bird population

More access to renewable resources

Emigration

Can open or limit possibilities of future generations

Amount of food produced in an area

Clear Cutting

To create the soil

Endangered

Clumped

Explanation:

Answer:

As given below.

Explanation:

1. herbivores.

2. By all the types of organisms living in the same place.

3. Abiotic factors.

4. the hardwood trees to shrubs and softwood trees then to mosses.

5. From lichens to grass to shrubs and trees.

6. sustainability of the ecosystems is increasing more in protected areas.

7. the erosion of topsoil, leading to decreased crop production.

8. an increase in food supplies and better access to clean water.

9. emigration

10. will not limit any kind of possibilities for future generations.

11. It is the amount of land needed for a crop.

12. clearcutting

13. to create the soil.

14. threatened.

15. clumped

Answer:

¹⁴N isotope

Explanation:

7p⁺  are representing the number of protons in the nucleus

7n° are representing the number of neutrons in the nucleus

7e⁻ are representing the number of electrons

If we add the number of protons and the number of neutrons we get a mass number of 14 which is the atomic mass of the nitrogen-14 isotope.

Answer:

N¹⁴

Explanation:

Each element has its own properties, and those properties can be seen by their atomic number and proton number. However, there are types of atoms called isotopes, and these atoms have a different number of neutrons compared to its standard atom. For example, the standard atom of carbon is carbon-12, however, there are isotopes of carbon that have more neutrons, making them heavier. Examples of such isotopes are carbon-13 and carbon-14.

In this question, we are looking for an atom with has 7 protons and 7 electrons. Scanning the periodic table of elements, we can see that nitrogen is the only atom with 7 protons, hence in a neutral atom of nitrogen, there are 7 protons and 7 electrons. The atomic mass can be calculated by adding the number of protons and the number of neutrons together, so the atomic mass for this isotope is:

Protons + Neutrons = Atomic Mass

= 7 + 7

= 14

The isotope represented by 7p+ 7e-, 7n0 is nitrogen-14 (N¹⁴).

Answer:

From the arrangement of electrons

Explanation:

The atomic numbers of the elements in the various groups differ because they contain different numbers of protons.

Atomic number of an element is the number of protons in that element and it is a property that is used to distinguish one element from another.

Elements are substances that contains atoms which cannot be broken down further into any smaller substances.

Periodic table is a structured table that arranged these elements according to the number of atoms they contain in their shells.

In a periodic table, these elements appear in periods and in groups.

The groups contain elements that share the same number of atoms in their outermost shell.

Therefore, group 1, 2, 13 and 18 contain elements that vary because they contain different numbers of protons.

Learn more here:

https://brainly.com/question/24674837