i need help !! if anyone could help that would be good!!

Answer:

3. a sharing of electrons

Explanation:

A covalent bond consists of the mutual sharing of one or more pairs of electrons between two atoms. A covalent bond forms when the difference between the electronegativities of two atoms is too small for an electron transfer to occur to form ions. In other words, it does not involve ions.

Answer:

11 protons

Explanation:

Answer:

11 protons

Explanation:

since it is neutral it has 11 electrons as well

Answer:

The distance light travels in a tiny fraction of a second

Explanation:

One meter is defined as the length of the path travelled by light in a vacuum in [tex]\dfrac{1}{299 792 458}[/tex] of a second. It is also equal to the one [tex]\dfrac{1}{10}[/tex] of the distance from the equator to the North Pole. It is one of the fundamental units. It is a SI unit of length. So, the standard definition of 1 mete is the distance light travels in a tiny fraction of a second.

Hence, the correct option is (d).

Chocolate milk would require more agitation that hot chocolate dose.

Answer:

a

Explanation:

Answer:

D is correct.

Explanation:

Answer:

the molar mass of the components making up Ca(NO₃)₂ are as follows;

Ca - 40 g/mol

N - 14 g/mol

O - 16 g/mol

the molar mass of the compound is calculated as follows;

Ca(NO₃)₂ --> 40 + 2(14 + 16x3)

              = 164 g/mol

1 mol of the compound weighs 164 g

Therefore 0.433 mol = 164 g/mol x 0.433 mol

                                = 71.0g

the mass of 0.433 mol of the compound is 71.0 g

Answer:

C. Homeostasis

Explanation:

Answer:

Explanation:

The question wants us to determine what could be done to change the carbide ion to a neutral carbon atom.

From the given information:

The dark grey ball has a +1 charge, which implies that the positive charge is the proton. Also, the light grey ball is denoted by 0 charge, which signifies that it is a neutron because a neutron usually has no charge, and its mass is equal to the mass of the proton.

Consequently, the -1 charge on the medium grey ball signifies that it is an electron.

In a neutral atom, the number of protons usually equal to the electron number. However, in as much as no overall charge is present from the model of the atom given. We can say that the atom is neutral.

Let also recall that the atomic number is the number of available protons present in the element's atomic nucleus.

Thus, in the given atom.

The total number of proton = 8

The total number of neutron = 9

The total number of electron = 8

Since atomic number relates to the number of protons, the atomic number is also = 8

Answer: C :)

remove 4 electrons

Explanation:

good luck

Answer:

It stays the same

Explanation:

From the gas law:

P1V1/T1 = P2V2/T2

P1 = P, V1 = V, T1 = T and P2 = 15.5P, V2 = ? , T2 = 15.5T

Substituting the various variables into the gas law equation:

PV/T = 15.5PV2/15.5T

Make V2 the subject of the formula:

V2 = 15.5TPV/15.5PT

V2 = V.

V1 = V and V2 = V, hence, the volume of the balloon stays the same.

Answer:

It stays the same

Explanation:

Edge 2020

The moon is 150 inches far from the earth  to its current location 100 years from now.

Only one celestial object, Earth, which is third from the Sun, is known to support life. Although the Solar System contains enormous amounts of water, only Earth is home to liquid surface water. The oceans cover around 71% of Earth's surface, dwarfing its lakes, rivers, and polar ice.

Because Earth was never an unknown entity to mankind, it was never properly "discovered." Its shared status as a "planet" with other bodies, nevertheless, was just recently discovered.

The moon travels around 251,000 miles from Earth during its apogee, or farthest point from our planet. Solar eclipses that have an annular shape, or a "ring of fire," are among the best examples of apogee in nature.

Thus, the moon is 150 inches far from the earth  to its current location 100 years from now.

To learn more about earth, follow the link;

https://brainly.com/question/12041467

#SPJ2

Answer:

See explanation

Explanation:

The leaves or needles of evergreen trees lose less water than other kinds of leaves. This means that they are better able to conserve water in  the taiga, a cold biome with long, dark winters.

These conifers possess adaptations that are able to help them survive the long, cold winters and short summers in a typical taiga biome since their needles contain very little sap, which also helps prevent them from freezing.

Answer:

A. Pb(OH)2 + 2HCl → 2H2O + PbCl2

Explanation:

In a balanced reaction, the amount of different atoms in the products must be equal to number of atoms in reactants. With the equations of the problem:

A. Pb(OH)2 + 2HCl → 2H2O + PbCl2

There is 1 atom of Pb in reactants and products.

2 atoms of O in both sides.

4 atoms of H

And 2 atoms of Cl

That means this reaction is balanced

B. 2Pb(OH)2 + HCl → H2O + 2PbCl2

2 atoms of Pb

4 atoms of O in reactants but just 1 in products.

As the amount of oxygen is not equal for reactants and products we can say the reaction is unbalanced.

And right choice is A.

Answer:

The answer is “They supported the use of radioactive elements for medical diagnostic purposes”.

Answer:

They supported the use of radioactive elements for medical diagnostic purposes.

Explanation:

(Its a recorded fact)

Answer:

i believe the answer is 2.812

Explanation:

Answer:

It is disproved that atoms are indivisible.  Which is answer choice B.

Explanation:

I got it right on Edge. :)

We have that this means that It disproved that atoms are indivisible

Option C

From the question we are told

Which of Dalton's ideas about the atom did J.J. Thomson's experiment disprove?

Generally

Dalton defined an atom as the smallest particle of an element

This was disapproved of by J.J. Thomson's experiment

Therefore

This means that It disproved that atoms are indivisible

Option C

For more information on this visit

https://brainly.com/question/17756498

Answer:

A beta particle, = ₋₁⁰e

Explanation:

Alpha beta and gamma radiations are the examples of ionizing radiations.

Beta radiations are result from the beta decay in which electron is ejected. The neutron inside of the nucleus converted into the proton an thus emit the electron which is called β particle.

Properties of beta radiations:

The mass of beta particle is smaller than the alpha particles.

They can travel in air in few meter distance.

These radiations can penetrate into the human skin.

The sheet of aluminum is used to block the beta radiation

⁶⁷₂₉Cu   →   ⁶⁷₃₀Zn + ⁰₋₁e

The beta radiations are emitted in this reaction. The one electron is ejected and neutron is converted into proton.

Answer:

2Mg+O2=2MgO

Atomic number of Mg and O is equal in both side

Answer:

The nickel sulfate will completely mix with the water in the beaker to form a uniform green solution

Explanation:

When the nickel sulfate solution is placed in the bottom of the beaker of water, its molecules will more concentrated at the bottom of the beaker than in other parts of the beaker. Due to this high concentration of nickel sulfate molecules, the molecules will be colliding with one another at a frequent rate. With every collision occurring between the molecules, the molecules will continue to spread out further to other parts of the beaker where there is more space for the molecules and therefore less frequency of collision. Eventually, after many days, the molecules will spread out throughout the whole beaker completely mixing with the water molecules. This process is known as diffusion, which is defined as the movement of molecules from a region of high concentration to a region of low concentration until equilibrium is attained.

Answer:

a snowflake

Explanation:

Snowflake Symmetry. All ice crystals (of ordinary 'Ice 1h' that is) have the same basic hexagonal symmetry. The fundamental building block is a unit cell containing four water molecules. Ice crystals can be thought of as made of untold stacks of these unit cells.

Answer:

oh okie nice work

thanks for the remainder

The overall charge of an atom is zero.

Atoms are made up of positively charged particles called protons and negatively charged particles called electrons as well as non-charged particles called neutrons.

Answer:

It is inorganic

Explanation:

The characteristic of minerals that states that it cannot come from something living is that minerals are inorganic chemical substances.

A mineral is a defined as a naturally occurring solid inorganic chemical substance, made up of a definite composition and well defined crystal structure.

Answer: Tropical Rainforest

Explanation: Tropical rainforest are found near the equator because it is wamrer.

Hope this helps.

Answer:

The fly cells must be compared with human cells

Explanation:

Dr. Gracia's aim is the development of a potential cancer treatment. Remember that the treatment is meant for human beings.

Usually, the pre-clinical trials of the treatment is carried out on other organisms and the success rate is evaluated before trial on humans.

If protein W has been effective on flies, its effect on human cells should also be diligently compared before conclusions are drawn regarding the therapeutic effects of protein W.

Type of soil : Loam

A mixture is a combination of two or more single substances. The properties of the mixture component are not lost / unchanged as in compounds.

The mixture can be divided into a homogeneous mixture if the composition/ ratio of each substance in the mixture is the same and a heterogeneous mixture if the ratio of the composition of the substances is not the same (can be varied) in each place.

Soil is part of a mixture that has a different composition

To find the type of soil, we just need to draw a line of intersection between the 3 compositions shown

So the soil contains 40% sand, 40 silt, and 20% clay : Loam

Answer:

they be Cappin like a mf

Explanation:

tell the truth mf

I think the answer is 10!