please help ASAP it is maybe easy for you!!!

Answer:

B

Explanation:

Answer:

b

Explanation:

Answer: 1400 mL

Explanation:

The change in volume with change in pressure and change in temperature can be calculated using combination of gas laws. Here, the change in volume is 5600 ml.

Boyle's law, Charles's law and Gay- Lussacs law all relating the temperature, pressure and volume of an ideal gas. The relation between these three parameters from the combination of these laws at conditions is written as:

P1 V1/T1 = P2 V2/ T2.

From this, the change in volume V2 can be calculated.

Given , P1 = 760 mmHg

T1 = 20 k and V1 = 1400 mL.

T2 = 40 k and P2 = 380 mmHg.

The new volume V2 = P1 V1 T2 / T1 P2.

                                  = (760 mmHg × 1400 ml × 40K) / (20 K × 380 mmHg)

                                  = 5600 mL.

Therefore, the change in volume of the gas is 5600 ml.

To find more on combined gas laws, refer  here:

https://brainly.com/question/28257995

#SPJ2

For condensation to take place there should be noticeable difference between the temperature of the system and the atmosphere. Thus condensation is the reason for clinging of water particles to the side of the glass.

Condensation is a process in which the vapor state converts to liquid state. Condensation is the reverse process of evaporation. Condensation occur at dew point. Dew point is the temperature at which condensation starts.

When the hot air particles collides with the surface of the glass having ice water, then the hot particles that had so much energy or kinetic energy suddenly reduces its energy and converts to water due to the change in temperature and pressure .

Thus condensation is the reason for clinging of water particles to the side of the glass having ice water.

To know more about condensation, here:

https://brainly.com/question/20309509

#SPJ2

Answer:

Two

Explanation:

Answer:

Conductivity of a substance is defined as 'the ability or power to conduct or transmit heat, electricity, or sound'.

Explanation:

hope it helps

plzz mark as brainliest....

Answer:

yes eating the food involves both physical and chemical changes. The chewing of food is a physical change, while the mixing of saliva with food triggers chemical reactions

Explanation:

Once the food mixes with the saliva in our mouth, chemical reactions start taking place in the food, leading to its breakdown and changes in its chemical composition. An evidence of the chemical changes is the taste that we feel when we eat something sweet or sour etc.

Answer:

a chechimal

Explanation:

Answer:An iodide ion is the ion I−. Compounds with iodine in formal oxidation state −1 are called iodides. This page is for the iodide ion and its salts, not organo iodine compounds. In everyday life, iodide is most commonly encountered as a component of iodized salt, which many governments mandate.

brainliest pls

Answer:

NO.3) Mass of Al2O3 formed = 229.5g

500 mL of He at 98 kPa expands to 750 mL. Find P2.

P₂ = 65.3 kPa

Given

V₁=500 ml

P₁=98 kPa

V₂=750 ml

Required

P₂

Solution

Boyle's Law  

At a constant temperature, the gas volume is inversely proportional to the pressure applied  

[tex]\rm p_1V_1=p_2.V_2\\\\\dfrac{p_1}{p_2}=\dfrac{V_2}{V_1}[/tex]

Input the value :

[tex]\tt P_2=\dfrac{P_1.V_1}{V_2}\\\\P_1=\dfrac{98.500}{750}\\\\P_2=65.3~kPa[/tex]

Answer:

Mass = 83.33 g

Explanation:

Given data:

Number of atoms of neon = 2.486×10²⁴

Mass of neon = ?

Solution:

Avogadro number:

The given problem will solve by using Avogadro number.

It is the number of atoms , ions and molecules in one gram atom of element, one gram molecules of compound and one gram ions of a substance.  The number 6.022 × 10²³ is called Avogadro number.

1 mole = 6.022 × 10²³ atoms

2.486×10²⁴ × 1 mol / 6.022 × 10²³ atoms

0.413×10¹ mol

4.13 mol

Mass of neon:

Mass = number of moles × molar mass

Mass = 4.13 mol × 20.18 g/mol

Mass = 83.33 g

Answer:

The solution is

Explanation:

a = f/m

a =7/14

a=1/2

a=0.5

Acceleration of bike is 0.5 m/s²

Force used in push = 7 N

Mass of bike = 14 kg

Acceleration of bike

Force = Mass × Acceleration

Force used in push = Mass of bike × Acceleration of bike

7 = 14 × Acceleration of bike

Acceleration of bike = 7 / 14

Acceleration of bike = 0.5 m/s²

https://brainly.com/question/16685492?referrer=searchResults

Answer:

d

Explanation:

i think it's d, but I'm not sure. my answer is a little different but maybe i used a different number for the density of lead (11.35g/cc)

Answer:

Plateau, limestone

Explanation:

Edge

Answer:

Plateau, limestone

Explanation:2021

Answer:

I believe the answer is

"He is monitoring oxygen. The amount of gas released should be highest for the plant closest to the window and lowest for the plant farthest away from the window."

Explanation:

I may be wrong but thats my guess it seems the most accurate

Answer:

0.001 mole of NaF.

Explanation:

From the question given above, the following data were obtained:

Volume of solution = 100 mL

Molarity = 0.01 M

Mole of NaF =?

Next, we shall convert 100 mL to litre (L). This can be obtained as follow:

1000 mL = 1 L

Therefore,

100 mL = 100 mL × 1 L / 1000 ml

100 mL = 0.1 L

Thus, 100 mL is equivalent to 0.1 L.

Finally, we shall determine the number of mole of NaF present in the solution. This can be obtained as follow:

Volume of solution = 0.1 L

Molarity = 0.01 M

Mole of NaF =?

Molarity =mole /Volume

0.01 = mole of NaF / 0.1

Cross multiply

Mole of NaF = 0.01 × 0.1

Mole of NaF = 0.001 mole.

Thus, 0.001 mole of NaF is present in 100 mL of the solution.

Answer:

10%-saline solution = 60mL

15%-saline solution = 40mL

Explanation:

Let

10%-saline solution = x

15%-saline solution = y

x + y = 100

0.1x + 0.15y = 100*0.12

x + y = 100 (1)

0.1x + 0.15y = 12 (2)

from (1)

x = 100 - y

Substitute x = 100 - y into

0.1x + 0.15y = 12

0.1(100 - y) + 0.15y = 12

10 - 0.1y + 0.15y = 12

- 0.1y + 0.15y = 12 - 10

0.05y = 2

y = 2 / 0.05

y = 40mL

Substitute y = 40 into

x + y = 100

x + 40 = 100

x = 100 - 40

x = 60mL

10%-saline solution = 60mL

15%-saline solution = 40mL

Answer:

22 students

Explanation:

i just answered that question on a quiz and its correct lol

Answer:

the nominal density of a golf ball is to be approximately 0.65 ounces per cubic inch.

Explanation:

Answer:

Stress

Explanation:

Stress increases along faults and leads to rock breaking. Therefore option D is correct.

Along faults, stress builds up in the rocks due to the movement and interaction of tectonic plates. Stress is the force applied to the rocks, and it can occur in various forms, such as compression, tension, or shear. As the stress increases, the rocks become more strained and are pushed to their breaking point.

When the stress exceeds the strength of the rocks, they can no longer withstand the applied forces and break, resulting in an earthquake. The release of accumulated stress along the fault causes the rocks to rupture and generate seismic waves, leading to ground shaking and the propagation of energy throughout the Earth's crust.

Therefore, stress is the primary factor that increases along faults and ultimately leads to rock breaking and the occurrence of earthquakes.

Know more about tectonic plates:

https://brainly.com/question/16926233

#SPJ2

Answer:

✔ semiarid

✔ desert

✔ semiarid

✔ steppes

.

Explanation:

The deserts and steppes comprise the regions that are characterized by dry climates. The dry climates are characterized by very little rainfall, hot summers, and mild winters. The correct option is B.

The areas which are very dry and where the water escapes and leaves the area drier than other places is known as the dry climate. Most dry climates have summers very hot, winters cool and warm and the air is very dry.

The main characteristic feature of the dry climate is the low and infrequent rainfall. Arid and semi desert areas have only about 35 cm rainfall per year.

Thus the correct option is B.

To know more about dry climate, visit;

https://brainly.com/question/3623676

#SPJ2

Answer:

238g

Explanation:

Molar Mass (1 mol) of H2O2 = 34.0147 g/mol

7.00 mol = 35.0147*7

= 238.1029g

= 238g (rounded to 3 sig figs because 3 sig figs in 7,00)

Answer:

answer in picture

Explanation:

Answer:

B

Explanation:

a chemical change is where two chemicals come in to create a new chemical

Answer:

A change in a substance with no new substances being formed

Explanation:

you're welcome

Answer:

HOPE IT HELPS...

Explanation:

When added to ice, salt first dissolves in the film of liquid water that is always present on the surface, thereby lowering its freezing point below the ices temperature. Ice in contact with salty water therefore melts, creating more liquid water, which dissolves more salt, thereby causing more ice to melt, and so on

Answer:

A. the valence electrons

Explanation:

Answer:

The valence electrons

Explanation:

The valence electrons determine an element's properties because chemical properties of each element are determined by the element's electronic configuration and PARTICULARLY by its outermost valence electrons. I hope it helps!

                      ~Good luck

Answer:

fullerene

Explanation:

Answer:

5

Explanation:

Protons are depicted in this picture as +, and the no. of protons are always equal to the no. of electrons (unless it's an ion).

Over here, there are 5 protons therefore there should also be 5 electrons.

Answer:

The central atom is S.

Explanation:

Look at the structure.

Answer:

A Punnet Square...the second I am not sure.

Explanation:

Unfortunately the second could be many things. You'd have to have more background information.

Answer:

PUNNETT....,MAKE SURE U HAVE 2 T,s

Explanation:

punnett and cross