Write the formulas of the following compounds:
a. acetic acid
b. silver carbonate
c. copper(ii) sulfate
d. dinitrogen monoxide
e. xenon trisulfide

Answer:

d

Explanation:

(d) Liquid O2 conforms to the shape of its container but has a fixed volume; it contains relatively densely packed molecules. (c) Gaseous O2 fills ...

Missing: ice ‎| Must include: ice

Answer:

separation

Explanation:

The process of separating a mixture into its individual components is called separation. This can be achieved through various methods such as physical separation techniques, such as filtration, centrifugation, and evaporation, or chemical separation techniques, such as extraction and distillation. The specific method used depends on the type of mixture and the properties of the components. The goal of separation is to isolate the individual components of the mixture in their pure form.

ALLEN

Answer:

IF the fruit juice contains a high level of vitamin C, THEN the preventative effectiveness against common cold increases.

Explanation:

The hypothesis is a testable explanation of a scientific investigation. It aims at predicting the outcome of the experiment. One feature of the hypothesis is that it must be testable. The hypothesis is usually written in an "IF, THEN" format.

This question is regarding an experiment to test the amount of vitamin C in fruit juice. The vitamin C is thought to be an effective preventative against common cold. Hence, the hypothesis connects the effect on common cold (dependent variable) with the amount of vitamin C (independent variable). The hypothesis can be written as:

IF the fruit juice contains a high level of vitamin C, THEN the preventative effectiveness against common cold increases.

Answer:

A

Explanation:

Answer:

1. The endurance capacity of your respiratory muscles – including the diaphragm and intercostal muscles – increases, allowing deeper, fuller and more efficient breaths when you run. ... The more you run, the more alveoli you grow. These take oxygen and transport it into the capillaries.

Explanation:

Answer:

Double bonds

Explanation:

0.18 moles of NaOH in 300. mL of 0.60 M NaOH solution.

The molarity (M) of a solution is the number of moles of solute per liter of solution.

the number of moles (n) of solute in a solution ;n = M x V

Where ;M = molarity of the solution in moles/L ,V = volume of the solution in liters ,n = number of moles of solute in the solution.

Here, the volume of the solution is given in milliliters (mL), therefore, it needs to be converted to liters (L) before substituting in the above equation.1 L = 1000 mL.

So, 300 mL = 300/1000 L = 0.3 L

The molarity of the solution (NaOH) is given as 0.60 M

Therefore, the number of moles of NaOH in the given solution will be;

n = M x Vn = 0.60 mol/L x 0.3 Ln = 0.18 moles of NaOH in 300. mL of 0.60 M NaOH solution.

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Answer: B

Explanation: Because it has 4  things to up down right and left

Answer:

Explanation:

Mide 2mL de etanol, añadelo a un matraz aforado, pon agua hasta llegar a 100mL

Answer:

Quantitative data refers to any information that can be quantified, counted or measured, and given a numerical value. Qualitative data is descriptive in nature, expressed in terms of language rather than numerical values

Explanation:

:)

To determine the molar concentration of the hydrochloric acid (HCl) solution, we need to use the information provided about the mass of anhydrous sodium carbonate and the volume of HCl solution used in the titration.

Given:

Mass of anhydrous sodium carbonate: 0.338 g

Volume of HCl solution used: 15.3 mL

First, we need to convert the volume of the HCl solution to liters:

Volume of HCl solution = 15.3 mL = 0.0153 L

Next, we need to determine the number of moles of anhydrous sodium carbonate (Na2CO3) using its molar mass. The molar mass of Na2CO3 is 105.99 g/mol.

Number of moles of Na2CO3 = Mass / Molar mass

Number of moles of Na2CO3 = 0.338 g / 105.99 g/mol

Now, since the balanced chemical equation between Na2CO3 and HCl is 1:2, we can determine the number of moles of HCl required for the reaction.

Number of moles of HCl = (Number of moles of Na2CO3) * 2

Next, we calculate the molar concentration of the HCl solution using the moles of HCl and the volume of the HCl solution.

Molar concentration of HCl = (Number of moles of HCl) / Volume of HCl solution

Substituting the values:

Molar concentration of HCl = (0.338 g / 105.99 g/mol) * 2 / 0.0153 L

Calculating the value:

Molar concentration of HCl ≈ 0.442 mol/L

Therefore, the molar concentration of the hydrochloric acid (HCl) solution is approximately 0.442 mol/L.

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Answer:

24m/s

Explanation:

a=change of v/change of t

6m/s^2=v/4s

multiply both sides by 4s

v=24m/s

We must now decide whether the attraction or repulsion becomes weaker or stronger.

The attraction increases as electrons come nearer to the nucleus. We must first define the conditions that can lead to attraction and those that can lead to repulsion. In electrical interactions: By the rules governing electric charges; unlike poles attract, as poles repel.

Additionally, the nucleus of an atom in the atomic model has a positive charge because it contains protons, which have a positive charge, and neutrons, which have no charge. Because the electrons orbit their orbit and the nucleus is positively charged. The force is an attracting force as a result.

As is common knowledge, the strength of an attraction or repulsion depends inversely on the distance between two objects. energized particles (the electrons and the nucleus in this case). The force of attraction between an electron and a nucleus grows as the distance between them decreases as an electron approaches the nucleus. The attraction force will eventually get greater as an electron gets closer to the nucleus because of the shorter distance between them.

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(a) The main inorganic carbon system reactions in seawater involve the transfer of CO2 from the air phase into the water phase. The associated chemical equilibrium equations are as follows:

CO2 (aq) + H2O ↔ H2CO3 ↔ HCO3- + H+ ↔ CO32- + 2H+

CO2 (aq) is the dissolved CO2 in the water phase, H2CO3 is the carbonic acid, HCO3- is the bicarbonate ion, H+ is the hydrogen ion, and CO32- is the carbonate ion.

(b) Manipulation of the chemical equilibrium equations yields the following expressions for [HCO3-] and [CO32-] as a function of pCO2 and [H+] only:

[HCO3-] = K1*pCO2/[H+]

[CO32-] = K2*K1*pCO2/[H+]2

Where K1 and K2 are the carbonic acid and bicarbonate ion dissociation constants, respectively.

(c) If pH were to decrease while pCO2 remained the same, [HCO3-] would decrease more than [CO32-]. This is because the equation for [HCO3-] is directly proportional to [H+], whereas the equation for [CO32-] is inversely proportional to [H+]. As pH decreases, [H+] increases, so [HCO3-] decreases more drastically than [CO32-].

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Answer:

It’s the other answer, thermal energy

Explanation:

I hope y’all get a good grade

Thermal energy refers to the sum of the kinetic energy of all the particles in an object. Hence, the correct option is B.

Thermal energy is a form of internal energy associated with the random motion and vibrations of atoms and molecules within a substance. It is directly related to the temperature of the object, as the temperature is a measure of the average kinetic energy of the particles. The higher the temperature, the greater the thermal energy of the object.

Potential energy (A) refers to the energy that an object possesses due to its position or state, such as gravitational potential energy or elastic potential energy.

Temperature (C) is a measure of the average kinetic energy of the particles in a substance and is not the sum of the kinetic energy of all the particles. However, it is related to thermal energy as it provides information about the average kinetic energy.

Heat (D) refers to the transfer of thermal energy from one object to another due to a temperature difference. It is not the sum of the kinetic energy of the particles in an object but rather the energy transfer between objects with different temperatures.

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The atomic number and mass number are required to determine the number of protons, neutrons, and electrons in an atom.

In an atom, protons and neutrons are present in the nucleus, while electrons are present in the orbitals surrounding the nucleus. A proton has a positive charge, an electron has a negative charge, and a neutron has no charge. The mass of an electron is considerably smaller than the mass of a proton and neutron. To calculate the number of protons, neutrons, and electrons in an atom, use the following steps:

Step 1: Determine the Atomic Number

Atomic number refers to the number of protons present in an atom's nucleus. The atomic number of an element is also the number of electrons present in the neutral atom. It is designated as "Z." For example, the atomic number of oxygen is 8. This indicates that oxygen has eight protons and eight electrons.

Step 2: Determine the Mass Number

The mass number refers to the total number of protons and neutrons present in the nucleus. It is designated as "A." To calculate the number of neutrons, you must subtract the atomic number from the mass number (A-Z=N).

Step 3: Determine the Number of Electrons

The number of electrons in a neutral atom is equal to the atomic number. If the atom is charged, the number of electrons can be calculated by subtracting the charge from the atomic number or by adding the charge to the number of electrons in a neutral atom.

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The half-life of the radioactive substance is approximately 8.93 years.

To calculate the half-life of the substance, we can use the formula:
N(t) = N0 * (1/2)^(t/T),
where N(t) is the final amount of the substance after time t, N0 is the initial amount, t is the time elapsed, and T is the half-life.
First, convert 900 ug to mg: 900 ug = 0.9 mg. Then, rearrange the formula to solve for T:
T = t * (log(1/2) / log(N(t)/N0)),
where log is the logarithm function (base 10).
Plug in the given values:
T = 18 * (log(1/2) / log(0.9/2.6)) ≈ 8.93 years.

Summary: After calculating the half-life using the decay formula and the given information, we found that the half-life of the radioactive substance is approximately 8.93 years.

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Yes, the statement is True i.e. Sodium chloride is a buffer creating an injectable solution that is isotonic.

A buffer solution, also referred to as a pH buffer or hydrogen ion buffer, is an aqueous mixture of a weak acid and its conjugate base, or vice versa. The pH scarcely changes at all when a small amount of a strong acid or basic is added to it. Buffer solutions are used in a wide range of chemical processes to keep pH values almost constant. Buffering is used by many living systems to regulate pH in the natural world. For instance, the bicarbonate buffering system regulates the pH of blood, and bicarbonate also acts as a buffer in the ocean. Because of a chemical equilibrium between the weak acid HA and its conjugate base A, buffer solutions are resistant to pH change: HA ⇌ H+ + A− According to Le Chatelier's principle, an equilibrium between a weak acid and its conjugate base shifts to the left when hydrogen ions (H+) are supplied. Because of this, despite the supply of strong acid, the concentration of hydrogen ions increases less than anticipated.

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The equilibrium chemical equation Rb(s) + Cl₂(g) RbCl₂(s) has the appropriate product(s) for the reactivity of rubidium.

Magnesium chloride (MgCl₂) is created when the elements magnesium (Mg) and chlorine (Cl₂) mix. As a result, the reaction is a combination reaction, and the equation that balances it is as follows: Mg(s)+Cl₂(g)→MgCl₂(s)

For instance, salt chlorate, a typical household bleach, is created when chlorine, Cl₂, interacts with sodium hydroxide, NaOH, in a disproportionation process. Sodium and chlorine combine to make sodium chloride, a common table salt.

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Explanation:

hello

2K + 2H2O ==》2KOH + H2

Answer:

The stable ion the sulfur would form is the sulfide ion,

Explanation:

When any atom accept electrons it converts into negative ion/an anion. So it will change into Z 3− after gaining 3 electrons.

Sulfur is an elemental atom that has an atomic number of 16 and an atomic mass of 32.065 amu. If the sulfur atom gains three protons then potassium will be formed.

A proton has been a sub-atomic particle that has been known to carry a positive charge and are tend to remain inside the nucleus with the neutrons bonded together by the nuclear force.

The proton of the atom is the characteristic property of the element in the periodic table. They are the sole sub-atomic particle that gives the atomic number of the elemental atom.

The sulfur atom has the atomic number 16 which means it has 16 protons, so if three protons are added to it then the number f protons become 19 which is an atomic number of the potassium (K) element.

Therefore, a potassium element is formed.

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The gas laws are a set of fundamental principles that describe the behavior of gases under different conditions of pressure, volume, and temperature. We can use the ideal gas law to solve this problem:

PV = nRT

where P is the pressure, V is the volume, n is the number of moles, R is the gas constant, and T is the temperature in Kelvin.

First, we need to convert the temperature from Celsius to Kelvin by adding 273.15:

T = 0.00 C + 273.15 = 273.15 K

Next, we can plug in the values we have:

P(22.4 L) = (1.00 mol)(0.0821 L·atm/mol·K)(273.15 K)

Simplifying:

P = (1.00 mol)(0.0821 L·atm/mol·K)(273.15 K)/(22.4 L)

P = 1.01 atm

Therefore, the helium will exert a pressure of 1.01 atm on its container.

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Answer:

6.1

Explanation:

Because if you get to the large mark it would be 5 but since its not at 5, it would be 6.1 as you can see in my drawing. It aligns perfectly with 6.1.

The average body temperature is 98.6°F (37°C), with the normal range being 97°F (36.1°C) to 99°F (37.2°C).

According to the website where customers may make claims, the lawsuit claimed that Celsius mislabeled its products as having no preservatives even though they did contain citric acid. According to Celsius, it was introduced as flavour, not as a preservative, and it refuted the accusations.

Although it might not be directly dangerous, we don't advise drinking Celsius frequently. We still believe Celsius to be healthier than branded energy drinks like Red Bull, despite all of the dubious additives we mentioned in our review.

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✅Paraphrasing and summarizing .✅

IamSugarBee

Answer:

Explanation:

air is considered as a mixture of gases because it contains many gases. They are :

78 % Nitrogen

21 % oxygen

And 1 % other gases

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Determined by the number of missing bonds.

Bond line formulas make it easier to visualize and understand molecular structures.

1) In a condensed structural formula, the number of hydrogen atoms included with each carbon atom is determined by the number of missing bonds.

Each carbon atom must have four bonds in total, so the number of hydrogen atoms needed is the difference between four and the number of bonds the carbon already has.

2) Finding out the number of lines to draw in a bond line drawing for:

a. 1-propanol - You need to draw three carbon atoms in a row with an \(-OH\) group attached to the middle carbon atom. Draw single lines to represent the bonds between each atom.

b. 2-methylpentane - You need to draw a chain of five carbon atoms with a methyl group (\(-CH3\)) attached to the second carbon atom. Draw single lines to represent the bonds between each atom.

3) Chemists might use a bond line formula instead of a condensed structural formula for several reasons:

- Bond line formulas are more compact and easier to read than condensed structural formulas.

- Bond line formulas convey more information than condensed structural formulas in less space.

- Bond line formulas make it easier to visualize and understand molecular structures.

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Answer:

943.82 ml

Explanation:

Assuming constant pressure

V1/T1 = V2/T2

T2 * V1/T1 = V2       ( T must be in K units)

(220 + 273.15) * 540 / (273.15 + 9) = 943.8 ml

Answer:

E = 1.3*10^-18 J

Explanation:

E = hv

E = 6.626*10^-34 Js * 2 *10^15 s-1

E = 13.252*10^-19 J

E = 1.3*10^-18 J

Answer:

2 ×10¹⁵ × 6.626 × 10^-34= 13.25 × 10^-19

= 1.3 × 10^-18

Explanation:

The energy associated with an electromagnetic wave is given by Planck's constant (6.626 x 10-34 Js) times its frequency.

Answer:

a particle with no charge is a neutron.