Please help on number 6 will mark as brainliest

Answer:

D

Explanation:

ap

The statement that best describes the reaction [tex]\rm H_2(g) + Cl_2(g) \rightarrow 2HCl(9), AH = -184.6[/tex] is the reaction has no activation energy.

Activation energy is the small amount of energy which is required to start a reaction.

This is the kinetic energy of the reactant molecules, which helps them to collide.

High activation energy means the reaction will be slow.

Low activation energy means a high rate of energy.

Thus, the correct option is B.

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Answer:

name, force

Explanation:

Answer:

C

Explanation:

NaoH+HcI→ NaCl +H2O

Na0H=23+16+l= 40 9m

Nacl=23 +35.5 =58.5 gm

mass of NaOH required=117x40/ 58.5 =80 gm

Molar mass of NaOH = 23+16+1 =40g/mol

Molar mass of NaCl = 23+35.5 =58.5g/mol

To produce 58.5g NaCl 40g NaOH is required

So, to produce 117g NaCl {(40/58.5)×117}g = 80g NaOH is required.

Hope, this helps.

Answer:

is behavior

Explanation:

becuase behavior can be affected on the eviroment we are in

Our behavior is affected by physical environment.

Individuals live, study, work, even play in their external surroundings. People's physical environments are influenced by the air those who breathe, the water they consume, the homes they reside in, and the vehicles they need to get to school and work.

The way someone acts was referred to as their behavior. That's what a person must do to make things happen, modify something, and maintain the status quo.

Our behavior is affected by physical environment.

Therefore, the correct answer will be option (c)

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#SPJ2

Answer:

DONT OUT ITS WORTH BLA BLA BECAUs ITS NOT WORTH 80 ITS WORTH 5.

Explanation:

ANsWER..... C

Answer:

The rule is especially applicable to carbon, nitrogen, oxygen, and the halogens, but also to metals such as sodium or magnesium. ... All four of these electrons are counted in both the carbon octet and the oxygen octet, so that both atoms are considered to obey the octet rule.

The percentage yield of the reaction : 25%

C₂H₃NaO₂(CH₃COONa)- Sodium ethanoate(MW=82,0343 g/mol)

Reaction

CH₃COONa + NaOH⇒CH₄+Na₂CO₃

mol CH₃COONa :

[tex]\tt \dfrac{8.2}{82.0343}=0.1[/tex]

mol CH₄=mol CH₃COONa = 0.1

mass CH₄ (MW=16.04 g/mol) :

[tex]\tt 0.1\times 16.04=1.604~g[/tex]⇒ theoretical

mol of 560 cm³(0.56 L) of methane (⇒1 mol = 22.4 L at STP) :

[tex]\tt \dfrac{0.56}{22.4}=0.025~mol[/tex]

mass  CH₄ :

[tex]\tt 0.025\times 16.04=0.401~g[/tex]

[tex]\tt \%yield=\dfrac{0.401}{1.604}\times 100\%=25\%[/tex]

Answer:

Group 12

Explanation:

Answer:

I got all answers correct on my test and got 100%, this question was in the test which got correct

so your answer is group 12

Explanation:

Answer:

Dark Blue: Symbolizes integrity, knowledge, power, and seriousness. Blue: Peace, tranquility, cold, calm, stability, harmony, unity, trust, truth, confidence, conservatism, security, cleanliness, order, loyalty, sky, water, technology, depression, appetite suppressant.

Explanation:

Physical Change is a type of change where by no new chemical substance is formed. Physical changes are reversible. whilst Chemical change is a change where new chemical substance is always formed. Chemical changes are usually irreversible.

Examples of Physical Change include;

Melting of Ice

Melting of Candle

Grinding of chalk

Magnetization of Iron

Examples of Chemical Change includes;

Cooking of food

Rusting of Iron

Burning of Charcoal

Answer:

See explanation

Explanation:

Ga is in group 13 hence it must loose three electrons to form Ga^3+ in order to achieve the noble gas configuration because it has three electrons on its outermost shell.

O is in group 16 hence it must accept two electrons in order to attain the noble gas configuration to form O^2- since oxygen has six electrons on its outermost shell.

Br in group 17 has seven electrons in its outermost shell hence it must form Br^- (gain one electron) in order to attain the noble gas configuration.

P in group 15 must accept three electrons and form P^3- in order to attain the noble gas configuration since it has five electrons on its outermost shell.

S is in group 16 hence it must accept two electrons in order to attain the noble gas configuration to form S^2- since sulphur has six electrons on its outermost shell.

Mg in group 2 has two electrons on its outermost shell and must loose both to attain the noble gas configuration forming Mg^2+.

Al is in group 13 hence it must loose three electrons to form Al^3+ in order to achieve the noble gas configuration because it has three electrons on its outermost shell.

Se is in group 16 hence it must accept two electrons in order to attain the noble gas configuration to form Se^2- since selenium has six electrons on its outermost shell.

Lithium is in group 1 and must loose its only outermost electron in order to attain the noble gas configuration to form Li^+.

Rb is in group 1 and must loose its only outermost electron in order to attain the noble gas configuration to form Rb^+.

As in group 15 must accept three electrons and form As^3- in order to attain the noble gas configuration since it has five electrons on its outermost shell.

I in group 17 has seven electrons in its outermost shell hence it must form I^- (gain one electron) in order to attain the noble gas configuration.

Answer:

yeah its newton's third law

Explanation:

Answer: The empirical formula is [tex]C_3NH_5O[/tex].

Explanation:

If percentage are given then we are taking total mass is 100 grams.

So, the mass of each element is equal to the percentage given.

Mass of C = 50.69 g

Mass of N= 19.71 g

Mass of H = 7.09 g

Mass of O = 22.51 g

Step 1 : convert given masses into moles.

Moles of C = [tex]\frac{\text{ given mass of C}}{\text{ molar mass of C}}= \frac{50.69g}{12g/mole}=4.22moles[/tex]

Moles of N=[tex]\frac{\text{ given mass of N}}{\text{ molar mass of N}}= \frac{19.71g}{14g/mole}=1.41moles[/tex]

Moles of H=[tex]\frac{\text{ given mass of H}}{\text{ molar mass of H}}= \frac{7.09g}{1g/mole}=7.09moles[/tex]

Moles of O = [tex]\frac{\text{ given mass of O}}{\text{ molar mass of O}}= \frac{22.51g}{16g/mole}=1.41moles[/tex]

Step 2 : For the mole ratio, divide each value of moles by the smallest number of moles calculated.

For C =[tex]\frac{4.22}{1.41}=3[/tex]

For N = [tex]\frac{1.41}{1.41}=1[/tex]

For H = [tex]\frac{7.09}{1.41}=5[/tex]

For O =[tex]\frac{1.41}{1.41}=1[/tex]

The ratio of C:N:H: O = 3:1:5:1

Hence the empirical formula is [tex]C_3NH_5O[/tex].

Answer:

yes

Explanation:

Answer:

Explanation:

Isotope notation is of the form

A

Z

X

where  

Z

is the atomic number (number of protons),  

A

is the mass number (sum of protons and neutrons), and   X   is the element.

In Carbon- 14 ,   14  is the mass number (sum of protons and neutrons). This is our  A .

Carbon has the atomic symbol   C , and it has  6 protons. This is the atomic number, or  A . Thus, the isotope notation for Carbon- 14  is  14  6  C

Hope this helps!

Explanation:

Answer:

four

Explanation:

Carbon contains four electrons in its outer shell. Therefore, it can form four covalent bonds with other atoms or molecules.

Answer:ddddddddddd

Explanation:rrrrrrrrrrrrrrrrrrrrrrrrr

Answer:

C several elements make up an atom.

Explanation:

Density of object = gram/volume

= 100 g/ 5 cm³

= 20 g/cm³

The density of an object that is 100 grams and has a volume of 5 cubic centimeters is 20 g/cm³.

Density of any object will be calculated by using the below equation:

ρ = m/V, where

m = mass of object = 100g

V = volume of object = 5 cm³

On putting values we get,

ρ = 100/5 = 20 g/cm³

Hence required density is 20 g/cm³.

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Answer: any non-living thing

Explanation: abiotic means non-living

The Abiotic observation that the ecologist would record are ;

Abiotic factors in ecosystem are the non-living factors that play an essential role in determining how an ecosystem is different from other ecosystems. Some of the Abiotic factors that will distinguish ecosystems in the rainforest biome include ;

Hence we can conclude that The Abiotic factors/observation that the ecologist would record are ; Soil type, Climate , Precipitation and Sunlight

The options to your question are missing hence a general answer is provided above

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Answer:

c

Explanation:

An interstitial compound or interstitial alloy is a compound that is formed when an atom of sufficiently small radius sits in an interstitial “hole” in a metal lattice. Examples of small atoms are hydrogen, boron, carbon and nitrogen. These compounds are important industrially, for example some transition metal carbides and nitrides.

Answer:

(-5)

Explanation:

Answer:

B

Explanation:

I think B is false because you should communicate with all sorts of people, in order to learn different views/sides of something.

Answer:

D) NaNO3 at 10 °C

Explanation:

In this case, to know this, we need to watch the solubility curve of each compound to know which one is saturated or unsaturated in this case.

As you can see in the curve attached, let's analyze first what is an unsaturated solution.

An unsaturated solution is a solution where the quantity of solvent is in excess and the solute is completely dissolved in solution leaving no remains. This depends on the temperature of course. The solubility of one compound vary with the increase or decrease of temperature.

As you can see in the graph attached, what happens to the KCl? we can see that a 40 °C, you just need around g of solute to be dissolved, and be saturated so, this is not the correct choice.

If you watch NaCl, has similar behavior. You just need about 35 g of solute to be saturated.

Finally, the KNO₃ just need 60 g of solute to be dissolved in the solution, completely.

In the case of NaNO 10°C, we can see that at 40 °C it's not touching the curve, so we can assume that this is an unsaturated solution and it would be the correct choice.

Explanation:

AI a =m not suresedfdssssssssssss

Answer:

For many solids dissolved in liquid water, the solubility increases with temperature. The increase in kinetic energy that comes with higher temperatures allows the solvent molecules to more effectively break apart the solute molecules that are held together by intermolecular attractions.

Explanation:

Make sure to edit so you do get copy-writed

Answer:

c. object y is made of a different substance than x and z

Explanation:

why well i did the study island and it told me the answer why so don't ask