PLLZZZZ HELPPPP IT IS A TIME ASSIGNMENT !!!

Explanation:

An emulsion is a suspension of two liquids that actually do not mix together.these liquids that do not mix are said to be immiscible .an example :-

would be oil and water.lf you mix oil and water and shake them a cloudy suspension is formed

this is correct answer

I hope it's helpful for u....

Answer:

Crater size is related to the mass and velocity of the impacting body. Mass and velocity can be combined to find the kinetic energy of an impactor. ... This fundamental physical relationship allows an estimate of impactor mass to be made from crater diameter.

Explanation:

Answer:

By cooling the gas in the container the partial pressure of the gas will cause the gas to condense.  Imagine water vapor in a bottle if you cool it down it will condense into droplets as the molecules of gas start to slow down to to lower temp

Explanation:

A scientist is using robots to perform thousands of experiments on different chemical compounds to see how they affect cancer cells.This process is called Screening.

The method to test diseases and health condition of body used by scientist and doctor is called screening. The screening helps to find problem earlier and treat them.

To learn more about chemical compounds here.

https://brainly.com/question/12166462

#SPJ3

Answer: screening

Explanation:

The pine tree that produced the seed would be the only parent of a pine seed that was formed through self-pollination. So, the correct option is A.

In the process of self-pollination, pollen from one flower or plant fertilizes the egg cells of another flower or plant. For self-fertilization to occur, both male and female reproductive components must be present within the same flower or plant.

The pollen from the male flower component, the anther, is carried to the female component, the stigma, during self-pollination either by the wind or by pollinators like bees, butterflies, or birds.

A pine tree that produces seeds will be the sole parent of pine seeds that form through self-pollination. Self-pollination occurs when pollen from the same pine tree fertilizes the pine tree's own egg cells, producing seeds with the genetic makeup of only one individual.

Therefore, the correct option is A.

Learn more about Self-pollination, here:

https://brainly.com/question/19910654

#SPJ2

Explanation:

A chemical bond is a lasting attraction between atoms, ions or molecules that enable the formation of chemical compounds. The bond may result frim the electrostatic force of attraction between oppositely charged ions as in ionic bonds or through the sharing of electrons as in covalent bonds.

Answer:

6.31x10¹¹s⁻¹ = Frequency

Explanation:

To convert frequency to energy or vice versa we must use the equation:

e = h*f

Where e is energy in joules (4.18x10⁻²²J)

h is Planck's constant (6.626x10⁻³⁴Js)

Replacing:

4.18x10⁻²²J = 6.626x10⁻³⁴Js*f

Answer:

Increase the concentration of the reactants.

Explanation:

This question seems vague, but to put it simply, the reaction rate decreases with a decrease in temperature, so we need to find a way to increase the reaction rate again. When you lower temperature, the molecules are slower and collide less. So therefore, in other words, we need to find a way to increase the rate of collisions between molecules. When the temperature drops, if we increase the concentration of the reactants, we are able to increase the rate of collisions between molecules. As a result, reaction rate is increased once again.

If the temperature of a chemical change was reduced,the reaction rate could most likely be increased by increasing the concentration of the reactants.

Chemical changes are defined as changes which occur when a substance combines with another substance to form a new substance.Alternatively, when a substance breaks down or decomposes to give new substances it is also considered to be a chemical change.

There are several characteristics of chemical changes like change in color, change in state , change in odor and change in composition . During chemical change there is also formation of precipitate an insoluble mass of substance or even evolution of gases.

There are three types of chemical changes:

1) inorganic changes

2)organic changes

3) biochemical changes

During chemical changes atoms are rearranged and changes are accompanied by an energy change as new substances are formed.

Learn more about chemical change,here:

https://brainly.com/question/2591189

#SPJ6

Answer:

Three pairs of walking legs, wings, body divided into three segments, pair of sensory antennae.

Explanation:

Answer:

atoms relative motion slow down and begin to vibrate in place

Answer:31.8 °C

Explanation:

Delta T=?

C= .24 cal/g°C

M=612g

Q=1835

Delta T= 1835 cal/(.24cal/g°C)(612g)=12.50°C

Intial temp= 19.3°C

Add intial temp to new temp

12.50+19.3=31.8°C

Answer:

Beryllium fluoride - BeF2

Barium fluoride - BaF2

Strontium sulfide - SrS

Titanium(II) chloride - TiCl2

Iron(II) sulfate - FeSO4

Vanadium(III) cyanide - V( CN )3

Answer:

B.) Multicellular organisms are made of many cells and have specialized shapes that allow them to perform specific functions

Explanation:

Multicellular means that there is more than one cell.

Hope this helps!

Answer:

The answer is Ionic and covalent binding produces compounds, while hydrogen bonding and Van der Waals forces join separate molecules together.

Answer:

Cobalt was the first metal to be discovered since prehistoric times and the first metal with a recorded discoverer.

Cobalt-60 is used to create gamma rays which are used to treat cancer and to sterilize medical supplies.

Cobalt is one of only three naturally occurring magnetic metals, making it very useful for the uniquely calibrated magnets found in generators and hard drives. ...

Cobalt has been utilized by man for at least the last 2,600 years, providing blue pigments for glassware and ceramics.

Explanation:

Answer:

- Doesn’t exist naturally on earth.

- Isolated in 18th century

- we use cobalt for magnets

- isn’t rare

Answer:

This is not a chemical change

Explanation:

The dark green solution mixed with the water, but the water is still water. There were no bubbles, smell, temperature change, or any other signs of a chemical change

Have a great day!

A student mixes a dark green solution with water, and the result is pale green. This is a physical change.

Composition distinguishes a physical change from a chemical change. A physical change is a difference inside the look, smell, or straightforward presentation of a material sample without the need for a change in composition, whereas a chemical change alters the makeup of the substances in issue.

Despite the fact that we refer to them as physical "reactions," nothing is actually changing. A change in the substance in question's elemental composition is necessary for a reaction to occur. So, from now on, we will simply refer to bodily "reactions" as physical changes. A student mixes a dark green solution with water, and the result is pale green. This is a physical change.

Therefore, a student mixes a dark green solution with water, and the result is pale green. This is a physical change.

To know more about physical change and chemical change, here:

https://brainly.com/question/11946229

#SPJ2

Answer:

A is the answer..............

.............

Answer:

[tex]\boxed {\boxed {\sf M \approx0.864 \ M \ HBr}}[/tex]

Explanation:

The molarity of a solution is the moles per liter. It is found using this formula:

[tex]M=\frac { moles \ of \ solute}{liters \ of \ solution}[/tex]

First we must calculate moles, since we are given grams. To convert from grams to moles, the molar mass is used. This is also given to us, it is 80.91 grams per mole. We can use it as a ratio.

[tex]\frac {80.91 \ g \ HBr}{1 \ mol \ HBr}[/tex]

Multiply by the given number of grams.

[tex]314.5 \ g \ HBr *\frac {80.91 \ g \ HBr}{1 \ mol \ HBr}[/tex]

Flip the fraction so the grams of HBr cancel.

[tex]314.5 \ g \ HBr *\frac {1 \ mol \ HBr}{80.91 \ g \ HBr}[/tex]

[tex]\frac {314.5 \ mol \ HBr}{80.91 }=3.88703497714 \ mol \ HBr[/tex]

Now we know the moles, and can calculate the molarity.

There are 3.88703497714 moles of solute and 4.50 Liters of solution.

[tex]M= \frac {3.88703497714 \ mol }{ 4.50 \ L}[/tex]

[tex]M= 0.863785550476 \ mol/ L[/tex]

The original measurements have 4 and 3 significant figures, so we use the lowest number of 3 for our answer. For the number we calculated, that is the thousandth place.

The 7 in the ten thousandth place tells us to round the 3 to a 4.

[tex]M \approx 0.864 \ mol/ L[/tex]

[tex]M \approx 0.864 \ M \ HBr[/tex]

The molarity of the solution is about 0.864 M HBr.

Answer:

True

Explanation:

The bigger mass is measured in kilograms and smaller in grams

Answer:

the answer is 28.086amu

Explanation:

There are three isotopes of silicon. They have mass numbers of 28, 29 and 30. The average atomic mass of silicon is 28.086amu. sorry it took me so long.

Answer:

The answer is Iron phosphide (Fe2P)

Answer:

Explanation:

Since salt is composed of two ions Na+ and Cl- it will attract to the opposite poles of the water and form a ion-dipole bond. This will cause the phenomenon freezing point depression where as the name states it will take a lower tempertature to freeze it. So instead of freezing at 0 degrees c it will freeze at a negative 2 or so on.

The salt ions end up slowing the growth of ice as the water molecules re-freeze.

Freezing point depression can be defined as the decreasing of the freezing point of pure solvents upon the addition of different kinds of solutes.

Depression in the freezing point can be defined as a colligative property that is proportional to the molality of the solution.

As liquid water gets colder and colder, the motions of water molecules become slower and slower. When salt is added to water, the saltwater solution is composed of both water molecules and dissolved salt ions.

As a result, salt ions can easily replace some of the water molecules. Saltwater freezes more slowly than pure water due to many of the water molecules would be "crashing" into the ice's surface in pure water and are replaced by salt ions.

Therefore, the salt water will freeze at a lower temperature than the pure water.

Learn more about freezing point depression, here:

brainly.com/question/30093051

#SPJ2

Answer: ummm what is this cause I don't get it either

Explanation:

i need help with this to lol

Answer:

sigma bond

represents two electrons

Explanation:

The bond between hydrogen and oxygen is sigma bond because the bond between hydrogen and oxygen is covalent means sharing of electron takes place between two atoms and we know that sigma bond is also occurs in a covalent bond in which overlapping of atomic orbitals or hybrid orbitals along the bond axis occurs. Both also represent two electrons because both atoms share one electron each so we can say that the two atoms represents two electrons.

Answer:

PCl3

Explanation:

The molecular formular of a compound shows the exact number of atoms of elements present in the compound. In this illustration, there is one atom of P and 3 atoms of Cl.

The formular is given as; PCl3

Answer:

PCl³

Explanation:

because there are 1 phosphorus atom and 2 chlorine atom.