Helpp me please it’s hard

Answer: The sum of all outputs must equal the input:

Explanation:

Answer:

rise the fall

Explanation:

when air is heated it become lighter then rise but when cooled it becomes heavy and fall

Answer:

False

Explanation:

Answer:

You Just Have To Be Yourself To Succeed

Your difference is a strength that you will have to learn to exploit to your advantage. Thus, you should not compare yourself to others because it is a behavior that can only slow you down in your progress. Indeed, everyone progresses at their own pace in life. Your unique and beautiful just the way you are, you don't have to change yourself because of people are judging you. You just have to be yourself!

Explanation:

Answer:

Explanation:

whats the thing to put 2 gether

Answer:

i dont no

Explanation:

i need answer please

es una muy buena experiencia para poder conseguir una buena respuesta

Answer:

14

Explanation:

Neutrons are neutral and if there are no electrons to cancel out the protons you add the neutrons and protons together

Answer:

242

96

1

0

Explanation:

Knowing the functioning of balancing equations, we have that the values ​​of the constants correspond to 242, 96, 1 e 0.

Given the equation we have:

[tex]239 \ 94 Pu + 4 2 He \rightarrow a b Cm + c d[/tex]

Knowing from the beginning that nothing is lost and nothing is created but everything is transformed, we will have that the value of the constants will be given by:

so for a and b we will calculate as:

[tex]239+3=a\\a=242\\94+2=b\\b=96[/tex]

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Answer:

The answer is 30%

Answer:

5.13x10>-2

Explanation:

Answer:

ΔH = -162.5 kJ.

Explanation:

Hello.

In this case, we first rearrange the reactions:

ClO(g) + O₃(g) ⇒ Cl(g) + 2O₂(g);  ΔH =-122.8 kJ

2O₃(g) ⇒ 3O₂(g);  ΔH=-285.3 kJ

O₃(g) + Cl(g) ⇒ ClO(g) + O₂(g);  ΔH= ?

Thus, we are going to use the Hess law, as an strategy to rearrange the known chemical reactions and thereby compute the enthalpy of reaction of the unknown one.

1. The first reaction must be inverted in order to obtain chlorine as a reactant in the third one, therefore, the enthalpy of reaction becomes positive:

Cl(g) + 2O₂(g) ⇒ ClO(g) + O₃(g);   ΔH = 122.8 kJ

2. Second reaction remains the same:

2O₃(g) ⇒ 3O₂(g);  ΔH=-285.3 kJ

Then, we add them to obtain:

Cl(g) + 2O₂(g) + 2O₃(g) ⇒ ClO(g) + O₃(g) + 3O₂(g)

Whereas we can subtract both oxygen and ozone to obtain the third one:

O₃(g) + Cl(g) ⇒ ClO(g) + O₂(g)

Therefore, the enthalpy of reaction turns out:

ΔH = 122.8 kJ + (-285.3 kJ )

ΔH = -162.5 kJ.

Best regards.

Answer:

The atomic mass of element is 65.5 amu.

Explanation:

Given data:

Abundance of X-63 = 50.000%

Atomic mass of  X-63 = 63.00 amu

Atomic mass of X-68 = 68.00 amu

Atomic mass of element = ?

Solution:

Abundance of X-68 = 100-50 = 50%

Average atomic mass = (abundance of 1st isotope × its atomic mass) +(abundance of 2nd isotope × its atomic mass)  / 100

Average atomic mass  = (50×63)+(50×68) /100

Average atomic mass =  3150 + 3400 / 100

Average atomic mass  = 6550 / 100

Average atomic mass = 65.5 amu.

The atomic mass of element is 65.5 amu.

Answer:

what are sediments???????????????????????

Explanation:

Sediment is a naturally occurring material that is broken down by processes of weathering and erosion, and is subsequently transported by the action of wind, water, or ice or by the force of gravity acting on the particles.

I hope that helped you.

Answer:

a naturally occurring material that is broken down by processes of weathering and erosion.

Explanation:

Dictionaries help with definitions such as the one I've given you.    :)

The volume in of a 0.600 M NaCl solution that contains 0.00123 moles of NaCl is 2.05mL

The volume of a substance can be calculated using the following expression:

molarity = no. of moles ÷ volume

According to this question, a 0.600 M NaCl solution contains 0.00123 moles of NaCl.

volume = 0.00123 moles ÷ 0.600 M

volume = 0.00205L

Therefore, the volume in of a 0.600 M NaCl solution that contains 0.00123 moles of NaCl is 2.05mL.

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Answer:

0.188 moles of copper and 0.376 moles of silver nitrate

Explanation:

hope this helps

pls mark as brainliest

Let's see

[tex]\\ \rm\rightarrowtail Cu+AgNO_3\longrightarrow Cu(NO_3)_2+Ag[/tex]

Moles of silver :-

Answer:

D

Explanation:

Answer:

What do hurricanes, tornadoes, and thunderstorms have in common?

ANSWER : Low pressure systems

Answer:

Chemical

Explanation:

Macromolecules are part of the chemical components of cells. For example, DNA, proteins, and lipids.

Cells of similar types/function form tissues. Different types of tissues interact together to form organs. Organs form a common function.

Answer:

This problem is providing a chemical equation between two hypothetical elements, X and Y and asks for the molesof X that are needed to 

produce 21.00 moles of D in excess Y. After the following work, the answer turns out to be 15.75 mol X:Mole ratios:In chemistry, one the most crucial branches is stoichiometry, which allows us to perform calculations with grams, moles and particles (atoms, molecules and ions). It is based on the concept of mole ratios, whereby the moles of a specific substance can be converted to moles of another one, say product to reactant, reactant to reactant, reactant to product and product to product.

Calculations:In such a way, since 21.00 moles of D are given, we need the mole ratio of D to X in order to get the answer, which according to the reaction is 3:4 based on their coefficients in the reaction. Hence, we calculate the required as follows:

Explanation:

mark me brainliest!!

Answer:

I am thinking it is woody based off of what I've seen and read.

Explanation:

wish I could help but I'm lost

Answer: 6.788

Explanation: Water expands 9% when frozen and if the baloon is filled with all 6.2-L then its just 9% of 6.2 which is 0.588 then add it toghether unless your asking something else becuase im not smart and I can't even divided. :p

Answer:

"0.053457 M" of sulfuric acid.

Explanation:

The given values are:

[tex]V[/tex] = 10 mL solution

[tex]V_{added}[/tex] = 12.20 mL

[tex]V_{total}[/tex] = 22.20 mL

then,

M 0.103 M of NaOH,

[tex]V_{rinsed}[/tex] = experiment  will not be affected

[tex]V_{total \ base}[/tex] = 10.38 mL

Now,

⇒  mol of NAOH = MV

                            = [tex]0.103\times 10.38[/tex]

                            =  [tex]1.06914 \ m[/tex]

Whether Sulfuric acid, then

⇒  [tex]H_{2}SO_{4} + 2NaOH = Na_{2}SO_{4} + 2H_{2}O[/tex]

⇒  [tex]mol \ of \ acid =\frac{1}{2}\times \ mol \ of \ base[/tex]

⇒  [tex]1.06914 \ m \ mol \ of \ base = \frac{1}{2}\times 1.06914 = 0.53457 \ m \ mol \ of \ acid[/tex]

Before any dilution:

[tex]V_{sample} = 10 \ mL[/tex]

⇒  [tex]M \ acid = \frac{m \ mol}{V}[/tex]

                 [tex]=\frac{ 0.53457 }{10}[/tex]

                 [tex]=0.053457 \ M[/tex] (Sulfuric acid)

Answer:

CuO

Explanation:

Copper(II) oxide is a metal oxide it has the formula CuO.  It has formula of copper(2+). Cupric oxide, or copper (II) oxide

Explanation:

I think 20

0 in the photo should be 1, 1, 1

In  1-isopropyl-2-methylcyclohexane, the number of hydrogen atoms is 18, and this is also an isomer of the cyclohexane, there is a methyl group on the first carbon and an isopropyl group on the second carbon in 1-isopropyl-2-methylcyclohexane.

It is significant as it has a methyl group and an isopropyl group, it is an isomer of the cyclohexane, and it is a compound that can exist in multiple forms with different properties, such as in the field of organic chemistry, uses in industry, etc.

Hence, in 1-isopropyl-2-methylcyclohexane, the number of hydrogen atoms is 18, and this is also an isomer of the cyclohexane, there is a methyl group on the first carbon and an isopropyl group on the second carbon in 1-isopropyl-2-methylcyclohexane.

Learn more about methylcyclohexane here.

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Answer:

A- upfield

B- down field

C- splitting

D- chemical shift

E- integration

Explanation:

NMR is a spectroscopic technique commonly used to observe the magnetic fields around the nucleus of atoms in a compound under investigation.

A chemical shift is the difference in parts per million (ppm) between the resonance frequency of the observed protons in the compound under study and that of the tetramethylsilane (TMS) (the reference compound in NMR with a chemical shift of zero ppm because all protons in the compound are equivalent).

If signals appear close to the reference signal, the signals are said to appear upfield. If the signals appear far away from the reference, they are said to appear down field.

The presence of protons cause splitting of peaks to the magnitude of n+1. n is the number of neighboring protons. Splitting refers to the appearance of multiple peaks for a single nucleus due to neighboring nuclei.

The area of a signal that corresponds to the number of nuclei at that frequency is called the integration.