What happens to a person's weight on smaller and larger planets?

Answer: c

Explanation:

Answer: C - Centuries

Explanation:

Once alcohol is in the bloodstream it will reach the brain in a few seconds to minutes, depending on various factors such as the amount and concentration of alcohol consumed, body weight, metabolism, and other individual factors.

Alcohol can swiftly cross the blood-brain barrier after it is ingested, having an impact on the brain and neurological system. Depending on the quantity and frequency of drinking, alcohol's effects on the brain can range from minor disturbances in judgment and coordination to more serious consequences including loss of consciousness and, in the worst circumstances, death.

Long-term changes in brain structure and function, such as cognitive impairment and a higher chance of developing specific neurological and mental illnesses, can also result from chronic alcohol consumption.

Once alcohol is in the bloodstream it will reach the brain in a few seconds to minutes, depending on various factors such as the amount and concentration of alcohol consumed, body weight, metabolism, and other individual factors.

Learn more on effects of alcohol on the body here https://brainly.com/question/6511905

#SPJ1

Answer:

methane

Explanation: methane is obtained from the decaying of flora and fauna mostlyunder damp

The theory of plate tectonics explains the location of most earthquakes and volcanoes as on the boundaries of tectonic plates, most of the earthquakes or volcanoes happen.

Plate tectonics is the plates that are present in the earth's crust. These plates are of different types. These plates are always in movement. These plates are divergent, convergent, etc.

Earthquakes, volcanoes, and tectonic plates. The plate tectonics hypothesis states that Earth is a dynamic planet.

The numerous separate plates that make up its surface move and interact with one another, continually modifying and reshaping the Earth's outer layer. Tectonic plate movement causes both earthquakes and volcanoes.

Thus, the ends of the tectonic plates are the places where earthquakes or volcanoes happen.

Answer:

H2(g) + F2(g) ----> 2HF(g)

Answer = F2

Answer:

Explanation:

a) The forward reaction is exothermic, hence when temperature is increased the equilibrium shift towards the reactants side to get rid of the excess energy. This will mean that more reactants are produced decreasing yield

b) There are a fewer number of moles of gas on the right side compared to the left side (Just count the coefficients before each compound) so a higher pressure will mean that the equilibrium will shift towards the products side in order to decrease the pressure. This will mean that more products are formed increasing yield

c) When something is powdered it's surface area to volume ratio increases. A higher surface area means that the particles around it have more area to work on so the frequency of collisions will increase increasing the rate of reaction. This is why iron is powdered.

Answer:

a. The Zn and HCl both retained their identity.

Answer:

Q = 12.38

Explanation:

The Nernst equation is given as; Ecell = E°cell - (2.303RT/nF) log Q  ;where Q is the reaction quotient.

The reaction quotient, Q  in a reaction, is the product of the concentrations of the products divided by the product of the concentrations of the reactants.

In an electrochemical cell, Q is the ratio of the concentration of the electrolyte at the anode to that of the electrolyte at the cathode.

Q = [anode]/[cathode]

therefore , Q = 0.052/0.0042 = 12.38

From the information provided in the question, the mass of NiCl2 required is 0.23 g.

NiCl2(aq) + 2AgNO3(aq) -------> 2AgCl(s) + Ni(NO3)2(aq)

Number of moles of AgCl= Mass/molar mass

Molar mass of AgCl= 143 g/mol

Substituting values;

Number of moles = 503 × 10^-3g/143 g/mol= 0.00352 moles

Since 1 mole NiCl2 precipitates 2 moles of AgCl

x moles of NiCl2 precipitates  0.00352 moles of AgCl

x = 1 mole ×  0.00352 moles/2 moles

x = 0.00176 moles of NiCl2

Mass of NiCl2= 0.00176 moles × 130 g/mol = 0.23 g

Learn more: https://brainly.com/question/2510654

A. None are correct.

Explanation:

Proton has positive charge and mass too.

A neutron is chargeless and has mass as well.

An electron has negative charge and has mass.

The atomic number of carbon is 6.

Hence none are correct.

The percent by mass of oxygen in H₄P₂O₇ is 62.92%.

The percentage by mass of an element in a compound can be calculated by dividing the atomic mass of the element by the molar mass of the compound multiplied by 100 as follows:

% by mass = atomic mass of O/molar mass of H₄P₂O₇ × 100

The molar mass of H₄P₂O₇ can be calculated as follows:

1(4) + 31(2) + 16(7) = 178g/mol

Percent by mass of oxygen = (112g/mol ÷ 178g/mol) × 100

Percent by mass of oxygen = 62.92%

Therefore, 62.92% is the percent by mass of oxygen.

Learn more about percentage by mass at: https://brainly.com/question/16885872

#SPJ1

Answer:

5.12 L

Explanation:

P1V1/T1 = P2V2/T2

1.71 atm *10.0L /100 K = 9.70 atm *x/290.29 K

x = 1.71 atm *10.0L*290.29K /(100 K * 9.70 atm)= 5.12 L

According to the explanation given in our previous session, now we have a similar question but with a slight difference, but first let's set up the reaction:

2 RbNO3 -> 2 RbNO2 + O2

We have 5.0 moles of RbNO3

From the molar ratio we see that 2 moles of RbNO3 is equal to 1 mol of O2, therefore if we have 5 moles of RbNO3, we will have 2.5 moles of O2 being produced.

Since the question is asking "how many liters" we have to assume that we are dealing with gases and these gases are at STP (standard temperature and pressure), which is T = 273K and P = 1 atm, in these specfici conditions, 1 mol of gases will have a volume of 22.4 Liters, therefore if O2 has 2.5 moles of O2

1 mol = 22.4L

2.5 moles = x L

x = 56 Liters of O2 are being produced with 5.0 moles of RbNO3

The value of h in the right triangle is 7.7 cm.

Trigonometric ratio is used to show the relationship between the sides and angles of a right angled triangle.

In the right triangle, using trigonometric ratio:

a) sin(31) = h/15

⇒ 0.515 = h/15

Making H the subject of the formula we have:

0.515 x 15 = h/15  x 15

h = 7.725

h \(\approx\) 7,7

Hence, is is correct to state that the value of h in the diagram is 7.7 cm approximately. See the attached image.

Learn more about right triangle at:

https://brainly.com/question/6322314

#SPJ1

Full Question:

Although part of your question is missing, you might be referring to this full question:

the diagram shows a right-angled triangle. what is the value of h? give your answer correct to 1 decimal place.

Answer:

SO SORRY it took so long but the answer is B :)

Explanation:

Trust me and good luck :)

The theory that the planets move around the sun was endorsed by Aristarchus, Copernicus, as well as Galileo. The solar system revolves around the sun.

Aristarchus of Samos was just a Greek astronomer that suggested the very first heliocentric model of the cosmos, wherein the sun, rather than the earth, was even at its center. Despite the fact that his hypothesis was acknowledged by other philosophers of the time, it was dismissed as unrealistic, and the geocentric model remained in use for the next 1,700 years.

Copernicus was also the first to assert that the Earth as well as the other planets orbit the sun. It was really a significant shift in thinking.

Sun can be considered as a star in solar system.

The theory that the planets move around the sun was endorsed by Aristarchus, Copernicus, as well as Galileo. The solar system revolves around the sun.

Therefore, the correct answer will be option (b).

To know more about Aristarchus and Copernicus

https://brainly.com/question/12401405#SPJ2

Ratio of moles of NH₃ produced to moles of N₂ used: 2 moles of NH₃ / 1 mole of N₂

Ratio of moles of NH₃ produced to moles of H₂ used: 2 moles of NH₃ / 3 moles of H₂

From the balanced chemical equation:

N₂ + 3 H₂ ⟶ 2 NH₃

We can determine the ratio of moles of products to the moles of each reactant.

Ratio of moles of NH₃ produced to moles of N₂ used:

From the balanced equation, we can see that 1 mole of N₂ reacts to produce 2 moles of NH₃. Therefore, the ratio is:

2 moles of NH₃ / 1 mole of N₂

Ratio of moles of NH₃ produced to moles of H₂ used:

From the balanced equation, we can see that 3 moles of H₂ react to produce 2 moles of NH₃. Therefore, the ratio is:

2 moles of NH₃ / 3 moles of H₂

Learn more about the mole ratio at https://brainly.com/question/19099163

#SPJ1

Given the equation of reaction;

N₂ + 3 H₂ ---> 2 NH₃

Calculate the ratio of the moles of produced to the moles of each of the reactants used. (Write two separate ratios.)

Answer:

0.448 mols

Explanation:

Use balanced equation:

2H2 + O2 -> 2H2O

For every one mole of oxygen, there are two moles of water

hence the molar ratio 1:2

So if there are 0.224 mols of oxygen

Water = 0.224×2

Which is 0.448 mols of H20

The coefficient for Br and OH has been 3 and 6 respectively. Thus option C is correct.

If the reaction takes place in a basic medium, the reaction can be given as:

\(\rm Br_2\;+\;OH^-\;\rightarrow\;BrO_3^-\;+\;Br\;+H_2O\)

The coefficient has been placed in the chemical reaction to balance the number of atoms on the product and the reactant side.

The number of atoms of Br on the product side has been 2, and the reactant side has been 2.

The oxygen atoms have been 1 on the reactant side, and 3 on the product side.

It has been balanced as:

\(\rm 3\;Br_2\;+\;6\;OH^-\;\rightarrow\;BrO_3^-\;+\;5\;Br^-\;+\;3\;H_2O\)

The coefficient for Br and OH has been 3 and 6 respectively. Thus option C is correct.

For more information about redox reaction, refer to the link:

https://brainly.com/question/13978139

Answer:

a. BaSO₄ and AgCl.

b. 150.0g of BaCl₂, 50.0g of NaCl and 50.0g of KNO₃

Explanation:

Barium, Ba, from BaCl₂ reacts with the SO₄²⁻ of H₂SO₄ to produce BaSO₄, an insoluble white salt.

The reaction is:

BaCl₂ + H₂SO₄ → BaSO₄ + 2HCl

Also, Chlorides from BaCl₂ (2Cl⁻) and NaCl (1Cl⁻) react with AgNO₃ to produce AgCl, another white insoluble salt, thus:

Cl⁻ + AgNO₃ → AgCl + NO₃⁻

a. Thus, formulas of the two precipitates are: BaSO₄ and AgCl

b. Moles of BaSO₄ in 67.3g (Molar mass BaSO₄: 233.38g/mol) are:

67.3g × (1 mol / 233.38g) = 0.2884 moles of BaSO₄ = moles of BaCl₂ Because 1 mole of BaCl₂ produces 1 mole of BaSO₄

Now, as molar mass of BaCl₂ is 208.23g/mol, the mass of BaCl₂ in the mixture of 100.0g is:

0.2884 moles of BaCl₂ ₓ (208.23g /mol) = 60.0g of BaCl₂ in 100g of the mixture

Moles of the AgCl produced (Molar mass AgCl: 143.32g/mol) are:

197.96g ₓ (1mol / 143.32g) = 1.38 moles of AgCl.

As moles of Cl⁻ that comes from BaCl₂ are 0.2884 moles×2×1.5 (1.5 because the sample is 150.0g not 100.0g as in the initial reaction)

= 0.8652 moles of BaCl₂, that means moles of NaCl are:

1.38mol - 0.8652mol = 0.5148 moles of NaCl (Molar mass 58.44g/mol):

Mass NaCl in 150g =

0.5148mol NaCl × (58.44g/mol) = 30.0g of NaCl in 150.0g

That means, in the 250.0g of sample, the mass of BaCl₂ is:

60.0g BaCl₂ ₓ (250.0g / 100g) = 150.0g of BaCl₂

Mass of NaCl is:

30.0g NaCl ₓ (250.0g / 150g) = 50.0g of NaCl

As the total mass of the mixture is 250.0g, the another 50.0g must come from KNO₃, thus, there are 50.0g of KNO₃.

Answer:

Tapeworms and roundworms both belong to the same phylum however, their families are different from one another.

Tapeworms are flat, segmented intestinal parasites of the cat and dog and humans sometimes. They are present in the intestines of pets and depend on them, therefore, are parasites. These parasites look like tape which gives it its name.

Roundworms can also infect humans and the most common cases are among children. When not treated immediately, they can cause severe damage to a human host and can even cause blindness. Tapeworms are white in color with a long, segmented body.

The percent ionization of the nitrous acid in the 0.036 M aqueous solution is 2.1%.

The osmotic pressure (π) of a solution can be related to the molar concentration (M) of the solute and the temperature (T) of the solution by the following equation:

π = MRT

Where R is the gas constant.

We can use this equation to calculate the molar concentration of the nitrous acid solution:

M = π / RT

M = (0.93 atm) / (0.0821 L·atm/(mol·K) x 298 K)

M = 0.036 M

This is the molar concentration of the undissociated nitrous acid in the solution. To calculate the percent ionization of the acid, we need to know the concentration of the H+ and NO2- ions in the solution.

The balanced chemical equation for the dissociation of nitrous acid is:

HNO2(aq) ⇌ H+(aq) + NO2-(aq)

Let x be the extent of ionization of the nitrous acid. Then the concentration of H+ and NO2- ions can be expressed in terms of x as follows:

[H+] = x M

[NO2-] = x M

The concentration of the undissociated nitrous acid is (1-x)M.

The expression for the equilibrium constant (Ka) of the reaction can be written as:

Ka = [H+] [NO2-] / [HNO2]

Substituting the concentrations in terms of x, we get:

Ka = x^2M / (1-x)M

Simplifying the above equation, we get:

Ka = x^2 / (1-x)

The percent ionization of the acid is the fraction of the original HNO2 molecules that dissociate into H+ and NO2- ions. It can be calculated as follows:

% ionization = (concentration of H+ ions) / (initial concentration of HNO2) x 100

% ionization = (x M) / (M) x 100

% ionization = x x 100

Substituting the value of x from the above equation for Ka, we get:

Ka = x^2 / (1-x)

x = sqrt(Ka / (1+Ka))

We can calculate the value of Ka using the standard reference value of the acid dissociation constant (Ka) for nitrous acid at 25°C, which is 4.5 x 10^-4.

x = sqrt(4.5 x 10^-4 / (1+4.5 x 10^-4))

x = 0.021

% ionization = 0.021 x 100

% ionization = 2.1%

Therefore, the percent ionization of the nitrous acid in the 0.036 M aqueous solution is 2.1%.

Learn more about osmotic pressure here : brainly.com/question/25413362

#SPJ1

Answer:

Exothermic Reactions are taking place in this question

Explanation:

The chemical reaction mentioned in this question is Exothermic reaction as it releases heat and is explosive in nature.  

In fact exothermic reactions can release both heat and light. In such reactions the total energy of the products is less than the total energy of the reactants.  

Answer:

she waited 30 minutes

Explanation:

  i need brain liest

EXPLANATION:

A functional group is a collection of atoms within molecules that bind together to react in predictable ways.

The functional group tell us how a compound react and, also, the chemical properties of such compound

Below are the functional group of some compound

Alcohol

The functional group of alcohol is ---- OH

Example: Ethanol

Ester

The functional group of Ester is --O--

Example: Ethyl ethanoate

Aldehyde

The functional group of aldehyde is

Example: Vanillin

Explanation:

taking atom as hydrogen than

answer is +2.55

just apply Delta energy=energy in 4th orbit -energy in 2nd orbit

\(energy = - 13.6 \times z ^{2} \div n {}^{2} \)

so here you can find answer

Answer:

7

Explanation:

just add p has 1 o has 4 and h has 2

Answer:HNO3 + NaOH = NaNO3 + H2O is a neutralization reaction (also a double displacement reaction). The strong acid (HNO3) and strong base react to produce a salt (NaNO3) and water (H2O).Type of Chemical Reaction: For this reaction we have a neutralization reaction. Balancing Strategies: Here is a neutralization reaction. The HNO3 and NaOH combined and form a salt and water.

hope this helps have a nice night ❤️

Explanation: