Helpppp pleaseee for 15 points

Answer:positive

Explanation:

Answer:

Positive.

Explanation:

Since a neutral charge won't cancel out a positive charge, the overall charge of a nucleus is positive.

Answer:

0.659

Explanation:

n(NH3)/n(N2)=4/5

n(NH3)=4/5×0.824 =0.659

Answer:

the structure of atom which discovered by Thomson the describe on how the sub-atomic particles are arranged in an atom

2.63 g

Explanation:

One way to approach this problem is to determine the percent composition of hydrogen in water.

Answer:

Dear frnd, water is a conductor of electricity and short circuit means a damage in electrical component in a device. Thus,water will spread the fire.

Explanation:

Pls mark as brainliest.Rocket Out

Answer: 0.99 grams of chlorine gas is produced by the reaction of 3.3g of ammonium perchlorate

Explanation:

To calculate the moles, we use the equation:

[tex]\text{Number of moles}=\frac{\text{Given mass}}{\text {Molar mass}}[/tex]  

[tex]\text{Number of moles of } NH_4ClO_4=\frac{3.3g}{117.5g/mol}=0.028moles[/tex]

The decomposition of ammonium perchlorate is :

[tex]2NH_4ClO_4\rightarrow Cl_2+N_2+2O_2+4H_2O[/tex]

According to stoichiometry :

2 moles of [tex]NH_4ClO_4[/tex] produce =  1 mole of [tex]Cl_2[/tex]

Thus 0.028 moles of [tex]NH_4ClO_4[/tex] produce=[tex]\frac{1}{2}\times 0.028=0.014moles[/tex]  of [tex]Cl_2[/tex]  

Mass of [tex]Cl_2=moles\times {\text {Molar mass}}=0.014moles\times 71g/mol=0.99g[/tex]

Thus 0.99 grams of chlorine gas is produced by the reaction of 3.3g of ammonium perchlorate

Answer:

hydrogen

Explanation:

this is a reaction between to elements your other element would consist of deuterium but since you pick one you pick the only elemnt that creates this newclear fusion.

Answer:

Explanation:

ℎ ℎ

Answer:

I will say to my friend that

pure or distilled water does not conduct electricity

but instead of this.

water conduct electricity

be aware of it

Answer:

0.01.

Explanation:

This is because, if you divided one rectangle by ten, it will give 0.1

That is 1/10 = 0.1

If each of the smaller rectangles is divided by 10.

It will be 0.1/10 which will be equal to 0.01.

The rectangles will be 0.01 each.

Answer:

time

Explanation:

time can be controlled and set while all the others can't be necessarily controlled

Answer:

704.6 g CO2

Explanation:

MM sucrose = 342.3 g/mol

MM CO2 = 44.01 g/mol

g CO2 = 456.7 g sucrose x (1 mol sucrose/MM sucrose) x (12 moles CO2/1 mol sucrose) x (MM CO2/1mol CO2) = 704.6 g CO2

Answer:

Ice is a molecular and crystalline solid.

Explanation:

Water freezes at 0 degrees Celsius; it has strong molecular bonds between the hydrogen and oxygen atoms of each molecule, and weaker intermolecular bonds between each molecule of water. The polarity of the molecules helps align them into an organized, repeating patterned, crystalline structure when a solid.

Answer:

Explanation:

dfghyuiop[]5565677dam u baddie no comparing

Answer:

66.13 cm³

Explanation:

Using the ideal gas equation, PV = mRT/M where P = pressure = 1.013 × 10⁵ N/m², V = volume of liquid vaporized = volume of air displaced, m = mass of organic liquid = 0.33 g, M = molar mass of gas = 120 g/mol and R = molar gas constant = 8.314 J/mol-K and T = temperature at vaporization = 293 K.

PV = mRT/M

So, V = mRT/PM

Substituting the values of the variables into the equation, we have

V = 0.33 g × 8.314 J/mol-K × 293 K/(1.013 × 10⁵ N/m² × 120 g/mol)

V = 803.881/121.56 × 10⁻⁵ m³

V = 6.613 × 10⁻⁵ m³

V = 6.613 × 10⁻⁵ × 1m³

V = 6.613 × 10⁻⁵ × 10⁶ cm³

V = 6.613 × 10 cm³

V = 66.13 cm³

Answer:

true

downstream to the riverbed. However, the most common mechanism to produce older rocks on top of younger is by thrust faulting. Thrust faults form where rocks are being compressed, usually by plate tectonic mechanisms. Thrust faults rip up older strata and pile it on top of younger rocks.

Explanation:

Answer:

C

Explanation:

Because a planet is a celestial body distinguished from the fixed stars by having an apparent motion of its own (including the moon and sun), especially with reference to its supposed influence on people and events.

Answer:

it is the second one ;)

Explanation:

Answer:

im sorry i dont

Explanation:

Answer:

See explanation

Explanation:

The synthesis of aspirin is shown in the reaction scheme attached to this answer. The production of aspirin involves the reaction of acetyl salicyclic acid and acetic anhydride. HA in the reaction mechanism refers to an acid that is used in the reaction

Similarly  benzamide, is converted to the carbonyl carbocation by reaction with acid. The -NH2 group is protonated and subsequently departs as a leaving group. An OH^- completes the mechanism forming a carboxylic acid. The movement of electrons is shown in the image attached.

Again, the diazotization of benzamide using sodium nitrate and concentrated HCl yields benzene diazonium chloride. Addition of water to benzene diazonium chloride yields the benzoic acid and nitrogen gas.

Answer:

The answer is Magnesium

Answer:

[tex]\boxed {\boxed {\sf 2.62 \ mol \ N_2}}[/tex]

Explanation:

The relationship between moles and gases is unique. Regardless of the type of gas, there will always be 22.4 liters of gas in 1 mole, as long as it's at STP (standard temperature and pressure).

We can make a ratio using this information.

[tex]\frac {22.4 \ L \ N_2}{ 1 \ mol \ N_2}[/tex]

Multiply by the given number of moles.

[tex]58.6 \ L \ N_2 *\frac {22.4 \ L \ N_2}{ 1 \ mol \ N_2}[/tex]

Flip the fraction so the liters of nitrogen cancel.

[tex]58.6 \ L \ N_2 *\frac {1 \ mol \ N_2}{ 22.4 \ L \ N_2}[/tex]

[tex]58.6 *\frac {1 \ mol \ N_2}{ 22.4 }[/tex]

[tex]\frac {58.6 \ mol \ N_2}{ 22.4 }= 2.61607143 \ mol \ N_2[/tex]

The original measurement of liters has 3 significant figures, so our answer must have the same.

For the number of moles calculated, 3 sig figs is the hundredth place. The 6 in the thousandth place tells us to round the 1 to a 2.

[tex]2.62 \ mol \ N_2[/tex]

58.6 liters of N₂ gas at STP is equal to about 2.62 moles.

Answer:

the pressure is equal to 0.2atm

The pressure at which the volume of the gas is 2 L at the same temperature as when the volume of a gas is 400 mL and pressure 1 atm is 0.2 atm.

According to combined gas law,

[tex]\rm \dfrac{PV}{nT} = R[/tex]

In the Combined Gas Law,if we change either one of the variables the others will also change.

When the moles of the gas is constant , the above equation can be written as ,

[tex]\rm \dfrac{P'V'}{T'} = \dfrac{PV}{T}[/tex]

Given is P = 1 atm , V= 400ml , V'= 2L= 2000ml , P'= ? T=T'

So we will substitute the values in the above formula keeping temperature constant.

[tex]\rm P'V' = PV\\\\\rm P' \times 2000 = 1 \times 400\\ \\\m P'= \dfrac{1\times 400}{2000} = 0.2 \; atm\\\\\rm P' = 0.2 \; atm\\[/tex]

Therefore the pressure at which the volume of the gas is 2 L at the same temperature as when the volume of a gas is 400 mL and pressure is 1 atm is 0.2 atm.

To know more about Combined Gas Law:

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it shoudl be : 2Fe(NO3)3 + 3MgSO4 → 3Mg(NO3)2 + Fe2(SO4)3

(the difference is Fe2(SO4)3 has no coefficient)

The correct option is option A. when the students check the air pressure of bicycle tires, once by keeping it out in the winter and noticing the air pressure being decreased and after by keeping the bicycle inside at room temperature and noticing that the air pressure has increased.

According to Gay lussac's law, the temperature and pressure of a gas are directly proportional to each other, provided the volume is constant.

When the temperature of a gas is increased, the molecules gain more kinetic energy and hence the frequency of them hitting the walls of the container increases which basically implies that the pressure increases.

On the other hand when the temperature is low, the molecules do not have substantial kinetic energy to hit the walls of the container frequently, that is the pressure decreases.

When the bicycle tires were kept out in the winter, the low temperature decreased the air pressure inside the tires. While when they were warmed at room temperature, the pressure inside the tires increased.

Therefore, the correct option is option A.  when the students check the air pressure of bicycle tires, once by keeping it out in the winter and noticing the air pressure being decreased and after by keeping the bicycle inside at room temperature and noticing that the air pressure has increased.

To know more on Gay lussac's law, click on

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Answer: A

Explanation:

Answer: all of them?

Explanation:

Answer:

Deku.

Explanation: