In 17.2 seconds, a shopping cart is pushed 15.6 meters towards the west. What is the velocity of the cart? (hint~The answer is NOT 3m/s)

To create 50 grams of sodium sulfate, 28.16 grams of sodium hydroxide are needed.

The International System of Units (SI) defines the gram as a unit of mass that is one thousandth of a kilogram. Another concept connected to mass is the gram.

The amount of matter that makes up a substance or an object is truly measured by its mass. The kilogram (kg) is the fundamental SI unit for mass, but lesser quantities are typically measured in grams (g). You would use a balance or perhaps a scale to measure mass.

According to the answer to the previous question, 80 grams of sodium hydroxide and 142 grams of sulfuric acid react to form sodium sulfate. So the amount of sodium hydroxide needed to make 50 grams of sodium sulfate is as follows:

80 × 50 / 142  = 28.16 grams.

To know more about gram visit:

brainly.com/question/11260752

#SPJ4

Answer:

1. 7

2. 7

3. 16.60

Explanation:

1. 7

3x-3=18

+3 +3

3x=21

/3 /3

x=7

2. 7

4x-5=23

+5. +5

4x=28

/4. /4

x=7

3. 16.60

it reaches above the halfway point after 16, and it's one above it. So, it's 16.60

Answer:

depending on the air masses involved and which way the fronts move, fronts can be either warm, cold, stationary, or occluded.

Answer:

D Trigonal pyramidal

Explanation went over in class:

Answer:

D. Trigonal pyramidal

Explanation:

A P E X !

Light makes everything visible but it allows us to see because our eyes are sensitive to light and our brains process the light signals that went into our eyes.

This is also known as visible light and it is referred to as electromagnetic radiation that can be perceived by the human eye.

It is visible by organisms because the eyes are sensitive to it such that when it hits an object, it is reflected back into our eyes, and that allows us to see the object.

Read more about Light here https://brainly.com/question/166544

#SPJ1

The full question;

Why does light make everything visible when it is the source of light itself or when it's blank off something else?

The formulae for the reactants—the chemicals that are mixed together—are written on the left, with the symbol "+" used when more than one component is present, and the formula(s) for the product(s) are written on the right. An arrow with the symbol '--->' separates the reactants and the products. And when the chemical equation for a system in equilibrium is written then double half arrow is used.

A + B ⇌ C + D

Two half-arrowheads, one pointing in each direction. Equations that depict reversible reactions utilize it:

The reaction that moves to the right is the forward one.
The left-leaning response is the one that is backward.
The quantities of the reactants and products in the reaction mixture may
be altered by changing the reaction conditions.

To learn more about Equilibrium, click here: -

https://brainly.com/question/2009610

#SPJ4

Answer:

[He] 2s2 2p2

Explanation:

Based on the lab values provided, the answer would be D. The patient has been immunized against hepatitis B as indicated by the presence of HBsAB.

The absence of HBsAg and HBcAb suggest that the patient has not had a recent or current infection with hepatitis B. It is important to note that these lab values should be interpreted by a health care provider in the context of the patient's medical history and any additional lab or clinical findings.

HBcAb (-) means the patient does not have antibodies for the hepatitis B core antigen, suggesting no past infection. These results suggest that the patient has been immunized against hepatitis B.

To know more about health click here

brainly.com/question/24054028

#SPJ11

Interpreting these lab values for a 40-year-old patient with the given terms:

HBsAg (-), HBsAB(+), HBcAb(-)

a. the pt had hepatitis
b. the pt has hepatitis
c. the pt should consider immunization
d. the pt has been immunized

Your answer: d. the pt has been immunized.

HBsAg (Hepatitis B surface antigen) is negative, which indicates the patient does not have an active Hepatitis B infection.
HBsAB (Hepatitis B surface antibody) is positive, which suggests that the patient has developed immunity to Hepatitis B, either from previous exposure or immunization.
HBcAb (Hepatitis B core antibody) is negative, which means the patient has never been exposed to Hepatitis B.

Therefore, the interpretation of these lab values suggests that the patient has been immunized against Hepatitis B.

To know more about HBsAg , HBsAB and HBcAb:

https://brainly.com/question/31546490

#SPJ11

Answer:

Liquid

Explanation:

To write the net ionic equation for the reaction that occurs when aqueous solutions of sodium hydroxide and perchloric acid are combined, first perform the complete ionic equation and then identify and eliminate the ions that do not participate.

A net ionic equation shows only the chemical species involved in the reaction

A net ionic equation is written with the smallest possible integer values as stoichiometric coefficients.

HClO4 (l) + NaOH (aq) → NaClO4 (aq) + H2O (l)

H+(aq) + OH−(aq) → H2O(l)

Learn more about ionic equations at https://brainly.com/question/14982375

#SPJ4

Two moles of an ideal gas are placed in a container whose volume is 4.8 x 10⁻³ m³. The absolute pressure of the gas is 2.4 x 10⁵ Pa. The average translational kinetic energy of a molecule of the gas is 2.67 x 10⁻²⁰ Joules.

The average translational kinetic energy of a molecule of an ideal gas can be determined using the formula:

Average kinetic energy per molecule = (3/2) * (k * T)

where k is the Boltzmann constant (1.38 x 10⁻²³ J/K) and T is the temperature in Kelvin.

To calculate the temperature, we can use the ideal gas law:

PV = nRT

where P is the pressure, V is the volume, n is the number of moles, R is the gas constant (8.314 J/(mol K)), and T is the temperature in Kelvin.

Rearranging the equation to solve for temperature, we have:

T = (PV) / (nR)

P = 2.4 x 10⁵ Pa

V = 4.8 x 10⁻³ m³

n = 2 moles

R = 8.314 J/(mol K)

T = ((2.4 x 10⁵ Pa) * (4.8 x 10⁻³ m³)) / ((2 mol) * (8.314 J/(mol K)))

Calculating T, we find:

T = 1.154 x 10⁴ K

Now, we can calculate the average translational kinetic energy per molecule:

Average kinetic energy per molecule = (3/2) * (k * T)

Average kinetic energy per molecule = (3/2) * (1.38 x 10⁻²³ J/K) * (1.154 x 10⁴ K)

Calculating the average kinetic energy per molecule, we find:

Average kinetic energy per molecule = 2.67 x 10⁻²⁰ J

Therefore, the average translational kinetic energy of a molecule of the gas is approximately 2.67 x 10⁻²⁰ Joules.

To know more about ideal gas here

https://brainly.com/question/30236490

#SPJ4

Substitute the given value of k (0.135 s^(-1)) and calculate the time (t) using the known initial concentration ([C5H6]₀).

To determine the time required for the concentration of [C5H6] to reach 0.110 M, we can use the first-order rate equation:

[C5H6] = [C5H6]₀ * e^(-kt)

Where:

[C5H6] is the concentration of C5H6 at time t

[C5H6]₀ is the initial concentration of C5H6

k is the rate constant for the reaction

t is the time in seconds

In this case, we want to find the time required for [C5H6] to be 0.110 M. Let's assume the initial concentration, [C5H6]₀, is known.

0.110 M = [C5H6]₀ * e^(-kt)

Rearranging the equation:

e^(-kt) = 0.110 M / [C5H6]₀

Taking the natural logarithm (ln) of both sides:

ln(e^(-kt)) = ln(0.110 M / [C5H6]₀)

-ln(k) * t = ln(0.110 M / [C5H6]₀)

Solving for t:

t = -ln(0.110 M / [C5H6]₀) / (-ln(k))

Now, substitute the given value of k (0.135 s^(-1)) and calculate the time (t) using the known initial concentration ([C5H6]₀).

To know more about initial concentration click this link -

brainly.com/question/31259432

#SPJ11

The volume of HCl gas required to react with excess magnesium metal to produce 6.82 L of hydrogen gas at 2.19 atm and 35.0 °C is 4.32 L.

Magnesium is a chemical element with symbol Mg and atomic number 12. It is a silvery-white, highly reactive metal and is the eighth most abundant element in Earth’s crust. Magnesium is an important component of proteins, nucleic acids, enzymes, and many other vital biological compounds.

The ideal gas law, PV=nRT, can be used to calculate the volume of HCl gas required to react with excess magnesium metal to produce 6.82 L of hydrogen gas at 2.19 atm and 35.0 °C.
First, the number of moles of hydrogen gas can be calculated using the ideal gas law:

n = PV/RT = (2.19 atm)(6.82 L)/[(0.082 L atm/mol K)(308.15 K)] = 0.077 mol

Next, the number of moles of HCl required to produce 0.077 mol of hydrogen can be calculated using the mole ratio of the balanced equation:

2 mol HCl : 1 mol H₂

0.077 mol H₂ x (2 mol HCl/1 mol H₂) = 0.154 mol HCl

Finally, the volume of HCl gas required can be calculated using the ideal gas law:

V = nRT/P = (0.154 mol)(0.082 L atm/mol K)(308.15 K)/(2.19 atm) = 4.32 L

Therefore, the volume of HCl gas required to react with excess magnesium metal to produce 6.82 L of hydrogen gas at 2.19 atm and 35.0 °C is 4.32 L.

To learn more about magnesium

https://brainly.com/question/30333465

#SPJ4

From the following statements which is incorrect is Benzene is a six-membered ring with the formula C₆H₆. The correct option is A.

This compound has a special property called aromaticity that makes it stable. In the benzene ring, each carbon atom is bonded to two other carbon atoms and one hydrogen atom, making it a hybrid of double and single bonds. This is incorrect because benzene rings are composed of six carbon atoms held together by three double bonds.

Benzene is a colorless, highly flammable liquid with a sweet, pleasant odor. The chemical formula for benzene is C₆H₆, and it is a highly recognized molecule in the chemical industry due to its structure and reactivity. It is composed of six carbon atoms that are bonded together in a hexagonal shape, with each carbon atom being bonded to two other carbon atoms and one hydrogen atom.

Benzene's structure distinguishes it from other molecules in the chemical industry. Each carbon atom in benzene is a hybrid of double and single bonds. This is why it is frequently referred to as an "aromatic" compound. Aromatic compounds, also known as arenes, contain one or more benzene rings. They are organic compounds that are often highly reactive and have a strong aroma.

To know more about benzene refer here:

https://brainly.com/question/14525517#

#SPJ11

Complete Question:

Which of these statements is incorrect? group of answer choices

A. benzene is a six-membered ring with the formula C₆H₆.

B. benzene is a particularly stable structure.

C. benzene rings are composed of six carbon atoms held together by six double bonds.

D.  benzene rings are sometimes called aromatic rings.

Answer:

The molecular formula of sodium choride is NaCl

In an open container, an equilibrium vapor pressure can be reached as long as the liquid has molecules capable of evaporating and the surrounding space allows for the escape and mixing of vapor molecules with the air.

Vapor pressure is the pressure exerted by the vapor molecules when the liquid and vapor are in equilibrium. It is a measure of the tendency of a liquid to evaporate. At any given temperature, molecules within the liquid have a range of kinetic energies. Some molecules have sufficient energy to overcome intermolecular forces and escape into the gas phase, forming vapor. As more molecules escape, the vapor density increases, creating a pressure known as the vapor pressure.

In an open container, the vapor molecules can freely escape into the surrounding space and mix with the air. Initially, the evaporation rate is high as molecules escape from the liquid surface. As the concentration of vapor molecules increases, collisions between the vapor and liquid surface also result in some molecules returning to the liquid phase, which is called condensation. Eventually, a dynamic equilibrium is established where the rate of evaporation and condensation become equal.

At this equilibrium, the vapor pressure above the liquid remains constant as long as the temperature is constant. The concentration of vapor molecules in the air above the liquid reaches a steady state, and the system is said to be saturated. The equilibrium vapor pressure is determined by the temperature and the characteristics of the liquid, such as its volatility and intermolecular forces.

Therefore, In an open container, an equilibrium vapor pressure can be reached above a liquid.

To know more about vapor pressure, refer to the link below:

https://brainly.com/question/15629887#

#SPJ11

The half-life of the unknown radioactive sample is approximately 1.16 hours.

To determine the half-life of the unknown radioactive sample that decreases in activity by a factor of six in a three-hour period, we can follow these steps:

1. Recognize that the given information is about the decay factor, not the half-life. In this case, the decay factor is 6.
2. Determine the number of half-lives (n) it takes for the sample to decay by a factor of 6. The formula for decay factor is: (1/2)^n = decay factor.
3. Plug in the decay factor and solve for n: (1/2)^n = 6.
4. Use logarithms to solve for n: n = log(6) / log(1/2) ≈ 2.585.
5. Now that we have the number of half-lives, we can find the half-life (t) by dividing the total time (T) by the number of half-lives: t = T/n.
6. Plug in the total time (3 hours) and n (2.585) to find the half-life: t = 3/2.585 ≈ 1.16 hours.

To learn what is half-life : https://brainly.com/question/1160651

#SPJ11

Answer:

3220 J of heat released

Explanation:

-qcal = (144.7g total)(4.2 J/g degrees C)(5.3 C)

The catalyst in the given reaction mechanism is O.(g) (atomic oxygen).

O3(g) → O2(g) + O(g) NO(g) + O3(g) → NO2(g) + O₂(g) O(g) + NO2(g) → O2(g) + NO(g). The correct answer is option: C .

The reaction mechanism involves the formation and consumption of O atoms at various steps. Ozone (O3) decomposes to produce O2 and O atoms. These O atoms then react with NO2 to form NO and O2, which are further involved in the formation of O3. Therefore, the O atoms produced from the decomposition reaction of O3 act as a catalyst in this reaction mechanism. The correct answer is option: C.

To know more about decomposition reaction, here

brainly.com/question/8009068

#SPJ4

The equivalence of these value is 1.75 × 10⁻³ M.

Hardness = 175 mg CaCO₃/L

or mass of CaCO₃ in 1 L = 175 × 10⁻³ grams

Now,

Molar mass of CaCO₃ = 40 + 12 + ( 3 × 12 ) = 100 grams/mol

The concentration of CaCO₃ = number of moles / volume

or

= (175 × 10⁻³ / 100) / 1

or

= 1.75 × 10⁻³ M

Now,

      CaCO₃         ⇒        Ca²⁺         +         CO₃²⁻

1.75 × 10⁻³ M          1.75 × 10⁻³ M         1.75 × 10⁻³ M

thus,

the concentration of Ca²⁺ ions in water = 1.75 × 10⁻³ M

An equivalency relation on a set S is a transitive, symmetric, and reflexive relation on S. A square and a triangle cannot be superimposed since they are not equivalent in force, quantity, or value or in area or volume.

To learn more about equivalency from the given link:

brainly.com/question/14672772

#SPJ1

Answer:

Pour water very slowly from a pitcher into each soda bottle and watch as the water passes through the soil and flows into the water reservoir (plastic cup). Try to cover the entire surface rather than just pouring the water in one spot. Observe how much soil erodes from each container and flows into the plastic cup.

There are 15 grams of carbohydrate that is present in one ounce of foods in the grain group.

The simple unit of all carbohydrate is a monosaccharide, that's a single 6-carbon ring structure. Foods high in carbohydrates are an important part of a healthy diet. The RDA for carbohydrates for adults age 19 and older is 130 grams per day. The AMDR is 45% to 65% of total energy intake.  Fiber (non starch polysaccharides), composed of many glucose molecules, which the human frame can't spoil down. Carb counting at its maximum simple stage entails counting the quantity of grams of carbohydrate in a meal and matching that in your dose of insulin.

Therefore, 15 grams of carbohydrate that is present in one ounce of foods in the grain group.

To learn more about carbohydrates check the link below:

https://brainly.com/question/336775

#SPJ4

Answer:

When pressure increases, gas volume decreases.

When pressure decreases, gas volume increases.

Explanation:

We have to balance the following equation:

__ H₂O + __ F₂ -------> __ HF + __ O₂

First we have to determine the number of atoms of each element that we have on both sides of the equation.

__ H₂O + __ F₂ -------> __ HF + __ O₂

O: 1 O: 2

H: 2 H: 1

F: 2 F: 1

We have 2 atoms of O on the right side and 1 atom of O on the left side. To balance the O atoms we can change the coefficient for H₂O and write a 2 in front of it.

2 H₂O + __ F₂ -------> __ HF + __ O₂

O: 2 O: 2

H: 4 H: 1

F: 2 F: 1

Then we have 4 atoms of H on the left and 1 atom of H on the right side of the equation. We can change the coefficient for HF to balance the H atoms.

2 H₂O + __ F₂ -------> 4 HF + __ O₂

O: 2 O: 2

H: 4 H: 4

F: 2 F: 4

And finally we have 2 atoms of F on the left and 4 atoms of F on the right. We can change the coefficient for F₂ and write a 2 there.

2 H₂O + 2 F₂ -------> 4 HF + __ O₂

O: 2 O: 2

H: 4 H: 4

F: 4 F: 4

The equation is balanced.

Answer: 2 H₂O + 2 F₂ -------> 4 HF + O₂

Answer:

omg

Explanation:

omg omg omg omg omg omg omg omg omg omg I can't either ehhhhhh

#1

#2

#3

#4

Answer:

Atoms form chemical bonds to make their outer electron shells more stable. The type of chemical bond maximizes the stability of the atoms that form it.

Explanation:

hope this helps.

The reaction between pottasium metal and chlorine gas is an example of combination reaction and the balanced equation is as follows: 2K + Cl₂ → 2KCl

A chemical equation is a symbolic representation of a chemical reaction where reactants are represented on the left, and products on the right.

A chemical equation is said to be balanced when the number of atoms of each element on both sides of the equation are the same.

According to this question, potassium metal reacts with chlorine gas to form solid potassium chloride. The balanced equation is as follows:

2K + Cl₂ → 2KCl

Based on the above equation, pottasium combines with chlorine chemically to form pottasium chloride compound, hence, it is an example of combination reaction.

Learn more about combination reaction at: https://brainly.com/question/32027270

#SPJ1