Chemistry High School

WILL GIVE BRAINLIEST!!

WILL GIVE BRAINLIEST!!

Answers

Answer 1

Answer:

Option b which is n equal to 3

Answer 2
B
Hope I helped you

Related Questions

Calculate the molarity of 0.060 moles of sodium bicarbonate (NaHCO3) in 1500. mL of solution.

Answers

Answer: 0.040 mol/l

Explanation: Molarity c = n/V (Concentration)

c = 0.060 mol / 1,5 l = 0,040 mol/l

Explain why the difference between the wet bulb temperature and the dry bulb temperature is always 0C when the relative humidity is 100%??

HELPPP!

Answers

Answer:

The dry bulb temperature is the ambient air temperature that is measured by regular thermometers, while the wet bulb temperature is measured by thermometers that are wrapped in  wicks. The greater the wet bulb depression, the greater the felt effect is on the discharge air temperature.

Explanation:


How would the graph differ if you were to draw a graph to compare temperature with
time taken for the reaction to take place?

Answers

Lime bro i dont even know ask you mom bro i lnow she got your back23-80

What did you know for sure after one Test? Two tests? Three tests?

Answers

Answer:

I knew that I learned something and passed that test. And that is all I want to do.

Explanation:

Answer:

vaiana and I have been working with our team since we been through

Match the parts of the element box as is making a periodic table key

Answers

Answer:

10 is the atomic number

Ne is the chemical symbol

Neon is the element name

20 is the atomic mass

Isaiah rolls a tennis ball along the ground. Which of the following best explains what will happen if forces act on the ball?

Answers

Answer:

what are the following

Explanation:

what are the options?

Answer:

the ball will stop moving

How many atoms of hydrogen are in 10.25 grams of
water?

Answers

There are (6.5) atoms of hydrogen in 10.25 grams of water

Para saber si se lleva a cabo una reacción donde un metal desplaza a otro metal de su sal u otro compuesto, es preciso:

Answers

Answer:

Explanation:

¡Hola!

En este caso, dado que las reacciones de desplazamiento simple se llevan a cabo cuando un metal desplaza a otro metal de su sal u otro compuesto, es preciso tener en cuenta la serie de reactividad de los metales que se muestra en el archivo adjunto.

Así, es mandatorio que el metal con el que la sal original reacciona, sea más reactivo que el catión de la misma, de modo contrario, la reacción tendría lugar. Por ejemplo, si el sodio reacciona con cloruro de zinc, al este primero estar más arriba en la serie, quiere decir que es capaz de desplazar el zinc en el cloruro original y así se formaría zinc metálico y cloruro de sodio.

¡Saludos!

What is the half-life of a radioisotope if a 20 g sample becomes 5 g after 2 days?

Answers

Answer: A- 1 day

Explanation: I really hope that helped. BYE!!

1 day is the half-life of a radioisotope if a 20 g sample becomes 5 g after 2 days

GUYS PLEASE HELP ME
giving brainliest

Answers

2

Hope this helps :)

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

name any two
chemical fertilizers rich in potassium​

Answers

Explanation:

Fertilizers are chemically synthesized plant nutrients.

Nitrogen (N), Phosphorus (P) and Potassium (K) are macronutrients and are required in large amounts by plants. So, farmers use fertilizers in order to supply these nutrients. NPK 15:15:15 , NPK 20:20:20, NPK 15:30:15 are examples of fertilizers used to supply N, P, K to crops.

Explanation:

1.Potassium Nitrate(KNO3)

2.Potassium Sulphate(K2SO4)

They provide potassium to plants for making their roots and shoots healthy.

What is the volume of 16.0 g of SO2 (g) at STP?

Answers

Answer:

Explanation:

At STP 1 mole of an ideal gas = 22.4 L.

Assuming SO2 (sulfur dioxide) acts as an ideal as, we have 16 g SO2 x 1 mol/64 g = 0.25 moles SO2

0.25 moles x 22.4 L/mole = 5.6 liters

Which of the following could be the hypothesis supported by an investigation that demonstrates the law of conservation of mass in relation to chemical reactions?
A. If the reaction obeys the law of conservation of mass, then mass will be the same before and after the reaction.
B. If the reaction obeys the law of conservation of mass, then mass will increase after the reaction.
C. If the reaction obeys the law of conservation of mass, then mass will be different before and after the reaction.
D. If the reaction obeys the law of conservation of mass, then mass will decrease after the reaction.

Answers

I think the answer is C

According to the law of conservation of mass, mass is neither created nor destroyed in a chemical reaction. If the reaction obeys the law of conservation of mass, the mass before and after the reaction will be the same.

What does the law of conservation of mass?

Any element's mass at the start of a reaction will equal its mass at the end of the reaction. Accounting for all reactants and products in a chemical reaction results in the same total mass at any point in time in any closed system.

When coal, for example, is burned, the carbon atom transforms into carbon dioxide. The carbon atom undergoes transformation from solid to gas, but its mass remains constant.

According to the law of conservation of mass, the amount of mass that enters a chemical reaction in the form of reactants must equal the amount of mass that exits the reaction process in the form of products. This is only possible in a closed system. For example, if 2g of reactant A reacts with 32g of reactant B, the mass of the product AB formed is 34g.

To learn more about Law of conservation of mass, refer to:

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#SPJ2

Select the correct answer.
Which of the following is true for a heating curve?
Ο Α.
It shows how the pressure of a substance changes when heated.
OB.
It shows how the temperature of a substance changes when heated.
OC.
It shows how the volume of a substance changes when heated.
It shows how the mass of a substance changes when heated.
OD
Reset
Next

Answers

Answer:

the answer is b: it shows how temperature of a substance changes when heated

It showed the temperature of a substance changes when heated

Can someone help me with this??

Answers

Answer:

A. Oil is to heavy to mix with water

HOPE THIS HELPS

-Todo <3

Explanation:

Answer:

It should be C - Water can only mix with polar molecules.

Explanation:

Oil is non-polar and water is polar.

Four 22.4 samples of nitrogen are bottled at STP and placed into environments with varying temperature. Which environment yield a sample the the greatest kinetic energy?
A)100k
B) 303k
C)273 k
D)200k

Answers

mayeb a is the correct answer .....

WILL GIVE BRAINLIEST PLEASE HELPP!!!

Answers

Answer:

I think C...................

What is the freezing point of a solution that has 5.0 moles of Nal in 1250 g of water? (K = 1.86°C/m; molar
mass of water = 18.0 g)

Answers

The freezing point is -14.88 degrees celsius

Type of reaction in NaOH + KNO3 → NaNO3 + KOH

Answers

Answer:

It is a combustion reaction

Explanation:

What is the overall equation for the covalent bond in H2O . Is it H2 + O2=H2O OR. H2 + O = H2O

Answers

Answer:

The answer is in the photo

Explanation:

I hope that is useful for you :)

PLS HELP FAST!!!! Determine the new concentration if you dilute 500mL of a 1.9M solution of NaCl to 1L.

Answers

Answer:

M2 = 0.95M

Explanation:

M1V1 = M2V2

(1.9)(0.5) = M2(1)

M2 = 0.95M

10. Aqua means "water" or "a light blue color." Marine refers to the sea. Use this information
to determine what the gemstone aquamarine might look like.
Determine what the gemstone aquamarine might look like?

Answers

Answer:

[tex] \huge\blue{ \mid{ \underline{ \overline{ \tt ♡ AQUAMARINE ♡ }} \mid}}[/tex]

=> The colour of this stone is usually a pale greenish blue, owing to the presence of iron impurities. Stones that are treated with heat look more blue than green. On the Mohs scale of hardness, aquamarine ranges between 7.5 and 8 making it a relatively hard gemstone.

=> The best way to identify a real aquamarine stone is by looking at its colour. In its natural form, they have a pale blue colour, which is similar to seawater. They may have a slight green or yellow tint as well. Naturally occurring gems have excellent clarity and transparency.

=> The hardness of the stone is another feature you can use to identify the stone. Aquamarine stones are hard and they don’t get scratches easily. However, they can easily scratch glass and other such surfaces. So, if you find visible scratches on the stone, rethink your decision to buy it.

=> Most faceted aquamarine stones are clean to the eye and clear of any inclusions. However, translucent and opaque aquamarine is also available. These are usually fashioned into cabochons or beads. In some cases, inclusions may appear as parallel tubes. Such stones can be crafted to show a cat’s eye. Stones with cat’s eye and star effect are rare and highly priced.

anybody still woke ???

Answers

Answer:

yep.. I am wide awake here.

yep

ExPlAnAtIoN:

yezs and nozs

I need help with this Asap. Best answer gets brainiest, also how is your day.

Answers

The answer is a!!!!!!!!

Hello everyone, I got stumped by this question:

Do you agree or disagree with the claim, A change to any gas in the atmosphere affects energy absorbed by the surface in the same way.

a
agree


b
disagree


Could you help me figure this out?

Answers

Answer:b

Explanation:

Which choices are uses of electrical energy?

Choose all that apply.


A. creates useful gases

B. supplies energy for heat

C. provides power to lights

D. creates a magnetic force

Answers

Answer:

option A,B and C.

are the options I chose.

The electrical devices include those that are needed to power appliances and those that are used in daily life. In order to make things operational, they need power or energy.

Electrical energy is taken from the movement of electronically charged particles. These when collide produce energy that can be used for heating, lighting, etc.

Hence the option C is correct.

Learn more about the choices are uses of electrical energy.

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What are some facts about Radon something that is unique and relatively unknown by the general population???? Helpppppp helpppppp

Answers

Answer: Radon is radioactive

Explanation: thats all i know

Radon as in? Be more specific about your questions and i’d be glad to help youu <3

are the bonds of OCl2 polar?​

Answers

Answer: OCl2 is polar because the two O-Cl bond dipoles don't cancel each other.

Which solution is more concentrated show work and EXPLAIN your reasoning

Solution A
2 L of water
135.75 g of MgO

or

Solution B
2 L of water
119.6 g of CaCl2

Answers

Answer:

Solution A

Explanation:

Solution A

1 mole of MgO = 24 + 16 = 40 g

? moles of MgO = 135.75g

[tex]\frac{135.75}{75}[/tex] = 1.81 moles

1.81 moles of MgO is in 2 liters of water

? moles of MgO is in 1 liter of water

[tex]\frac{1.584}{2}[/tex] = 0.905moles/liter or 0.905M

Solution B

1 mole of CaCl₂ = 40 + 35.5 = 75.5 g

? moles of CaCl₂ = 119.6g

[tex]\frac{119.6}{75.5}[/tex] = 1.584moles

1.584 moles of MgO is in 2 liters of water

? moles of MgO is in 1 liter of water

[tex]\frac{1.584}{2}[/tex]= 0.792moles/liter or 0.792M

What equation is used to calculate atomic mass?



WARNING!!!! NO LINKS OR YOU WILL BE REPORTED!!!!

Answers

Answer:

Average atomic mass = f1M1 + f2M2 +… + fnMn where f is the fraction representing the natural abundance of the isotope and M is the mass number (weight) of the isotope. The average atomic mass of an element can be found on the periodic table, typically under the elemental symbol.

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