I don't know what I'm supposed to do, can someone explain this to me please???

Answer:

The answer is

Explanation:

The number of molecules can be found by using the formula

where n is the number of moles

N is the number of entities

L is the Avogadro's constant which is

6.02 × 10²³ entities

From the question we have

N = 2 × 6.02 × 10²³

We have the final answer as

Hope this helps you

Answer:

3 ................................

Answer: 3

Explanation:

yes

Answer:

As those microbes thrive, they will release large amounts of methane, another climate-warming greenhouse gas. ... By the year 2100, they estimated, thawing permafrost could release enough carbon dioxide and methane to raise the average global temperature by 0.13 to 0.27 degree C (0.23 to 0.49 degree F). pls mark me brainlest :(

Explanation:

Answer:

AR(18)  

Explanation:

Try that it should work

                                                                                                                                         *(

Answer:

2044

Explanation:

Given that,

Mass number of Ge = 70

Then,

Atomic number of Ge = 32

No. of protons = 32

No. of electrons = 32

No. of neutrons,

→ 70 - 32 = 30

Answer:

30 is correct

Explanation:

70 - 32 = 30 mark as brainliest

Answer:

Im pretty sure its B. is released by salivary glands.

Explanation:

Answer:

D solid

Explanation:

Answer:

If something glows in the dark it is phosphorescent.

Answer: C

Explanation:

Answer:

B. 3.0 g/ml

Explanation:

density formula: mass/volume

15/5=3

Answer:

Since we are adding more water to an alcohol solution,

the volume of alcohol in the alcohol will be the same but the volume percent of alcohol will decrease

Initial Volume of Alcohol in the solution:

We are given that 70% of the 2.1 mL solution is alcohol

So, Finding 70% of 2.1

70/100 * 2.1 = 1.470 mL alcohol

Volume of Water in the Solution:

In our initial solution, we have (2.1 - 1.47) mL water

and we add an additional 6.7 mL water in the solution

Hence,

the total amount of water in the solution = (2.1- 1.47) + 6.7

Total amount of water in the solution  = 0.63 + 6.7

Total amount of water in the solution = 7.33 mL

Volume of the final solution = 8.8mL

Percent Alcohol in the new mixture:

Now that we know the volume of alcohol and the volume of water in our mixture, we can now find the percent composition of alcohol

Percent of alcohol (%v/v) = Amount of alcohol / 100mL of solution

Percent of alcohol = (1.47 / 8.8) * 100

Percent of alcohol = 0.167 * 100

Percent of alcohol = 16.7

Therefore, in a 100mL solution, we will have 16.7 mL alcohol

Answer:

double replacement

Explanation:

just did it

Answer:

Double replacement

Explanation:

Answer:

I think it's b: ne

Explanation:

its just a wild guess

Answer:

Styrofoam could be heavier than a rock depending on how much weight you put on it,

Water is heavier than a ping pong ball,

A gold ring is not heavier than a pencil,

Oil is heavier than water because of the combined mass.

A large log is heavier than a small rock.

Explanation:

The azimuthal quantum number and magnetic quantum number corresponds to the s orbital is zero. Hence, there is only one m value and thus contains one orbital only.

The quantum numbers are numbers used to describe the position of an electron within an orbital. The principal quantum number n indicates the main energy level. The azimuthal quantum number l indicates the shape and type of orbital which have values from 0 to n-1.

The magnetic quantum number m indicates the number of orbitals for a sublevel. m can have values from + l to -l. The fourth quantum number s is called spin quantum number. For an electron the spin quantum number can be +1/2 or -1/2.

The n value for the 6s sublevel is 6. The azimuthal quantum number , l for an s orbital  is zero. So its m quantum number has only one value that is zero. Hence, there is only one orbital in 6s sublevel.

Find more on quantum numbers:

https://brainly.com/question/16979660

#SPJ2

Answer:

On Question 3

Explanation:

try using any type or liquid like water, milk, soda, juice, coffee, tea, beer, or wine or any type and use the following questions by using a measuring cup from the kitchen tooling shelf. Use that to answer the question and see if that helps. your welcome btw

Answer:

79.904 u for bromine

24.305 u

Not really sure what the 3rd question is asking

Explanation:

Answer: Non-magnetic

Explanation:

Answer:

br is a non magnetic. hope this helps.

The two properties which can be measured from the given information are streak and cleavage of the mineral.

Minerals are naturally forming inorganic substances having crystal structure and metallic characteristics. They have a definite chemical composition and  homogeneity.

Streak is the color of powder form of mineral and cleavage is how the mineral cleave when we cut through a plane.  Hardness says how much hard the solid is.

When the mineral breaks into cubes when struck with a hammer, we measure its cleavage properties. The red trail on scrapping indicates the streak of the mineral.

Hence, the two properties we can measure from breaking by hammer and scrapping by an unglazed porcelain are its cleavage and streak.

To learn more about minerals, refer the link below:

https://brainly.com/question/18078524

#SPJ2

Answer:

37.9 or 38 grmas approximately

Answer:

The Answer would be A. April

Explanation:

Least amount of rainfall out of all the months we have to choose from.

Answer:

Pure covalent

Explanation:

To know the type of bond between two atoms you must find the electronegativity difference of them:

If electronegativity difference is:

< 0.4: Pure covalent.

Between 0.4 and 1.8: Polar covalent.

> 1.8: Ionic.

The electronegativity of Zn is 1.65 and Ni is 1.91. Electronegativity difference is:

1.91 - 1.65 =  0.26

That means the type of bond is:

Answer:

b. only weather includes information about the temperature

Answer:

The correct answer is C. None of the above.

Explanation:

To determine how long the black bear will run, the distance it will travel must first be determined. Thus, the proposed calculation must be solved.

1.95 x 10 ^ 4

1.95 x 10 x 10 x 10 x 10

19.5 x 10 x 10 x 10

195 x 10 x 10

1950 x 10

19500

Thus, the bear will run 19,500 miles, so, running at 35 mph, it will take about 557 hours to run that distance (19,500 / 35).