3. A wave has y frequency of 100 Hz and a speed of 50 m/s. What is the wavelength?

Wine was produced 37 years ago (1984 as usual year 15,2021) that is shown in the calculations below.

Reaction rate is calculated using the formula rate = Δ[C]/Δt, where Δ[C] is the change in product concentration during time period Δt. The rate of reaction can be observed by watching the disappearance of a reactant or the appearance of a product over time.

The time can be represented as follows:

t= 2.303\∧ log A0/A

∧= 0.693/t 1/2

The rate of a reaction is proportional to the reciprocal of the time taken. Rate α 1 time Rate is inversely proportional to time. Units: s-1, min-1 etc.

The given parameters are as follows:

t1/2=12.3

A0=5.5

A=0.688

t= 2.303/(0.693/12.3) log (5.5/0.688)

t=36.9

t=37 years

Thus, wine was produced 37 years ago (1984 as usual year 15,2021)

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Answer:

I THINK expose all six plants to green light

Explanation:

Answer:D). C3H6N

Explanation:applesause

Answer:

radio waves

Explanation:

which has the longest wavelength and lowest frequency and energy. Ultraviolet light (UV) is divided into three regions: UV A, wavelength = 400 - 320 nm UV B, wavelength = 320 - 280 nm

Answer:

Make Recycle Bins Easily Accessible

Ditch Single-Use Waste

Minimise Paper Waste

Designate a Drawer for Scrap Paper

Eco-Friendly Lunches

Answer:

i hope Boron oxide is the name you're looking for.

Answer:

Calcite

Explanation:

Answer:0

Explanation: zero because it is the most stable form of oxygen in its standard state

Answer:

∆G = 35 KJ

Explanation:

The given data are as follows;

Gastric juice pH = 1.5

Blood plasma pH = 7.4

Temperature = (37 + 273) K = 310 K

However, pH = -log [H+]

Therefore, [H+] = 10^-pH

At pH of 1.5, [H+] = 10^-1.5 = 3.16 × 10^-2 M

At pH of 7.4, [H+] = 10^-7.4 = 3.98 × 10^-8 M

Using ∆G = RTln(C2/C1)

Where R = 8.314 J/mol/K;

T = 310 K;

C2 (concentration inside) = 3.16 × 10^-2 M;

C1 (concentration outside) = 3.98 × 10^-8 M

∆G = 8.314 × 310 × ln(3.16 × 10^-2 / 3.98 × 10^-8)

∆G = 35012.74

Therefore, ∆G = 35 KJ

Answer:

the act of watching somebody/something carefully, especially to learn something

Explanation:

hope this helps you!

Answer:

hope this helps

Explanation:

noun

noun1.

noun1.the act of watching somebody/something carefully, especially to learn something

Technetium-99m is a radioisotope that is widely used in nuclear medicine for various imaging studies. It is usually produced through a process called generator system from the decay of its parent isotope, Molybdenum-99 (Mo-99).

How technetium-99m is generated:Technetium-99m is generated by a process called a generator system from the decay of its parent isotope, Molybdenum-99 (Mo-99). This generator system is essentially a column packed with a gel-like substance, which is usually made of alumina, silica, or another material. The column contains Mo-99, which is produced in a nuclear reactor, and its daughter isotope Technetium-99m (Tc-99m).The Mo-99 decays into Tc-99m by beta decay, emitting a beta particle and a neutrino.

As a result, Tc-99m is separated from Mo-99 by using a saline solution or another eluant to flush the column. The Tc-99m-containing eluant is then used for imaging studies.There are several advantages to using Tc-99m for imaging studies. It has a short half-life of only six hours, which means that it does not stay in the body for a long time and is eliminated quickly. This makes it safer for patients than isotopes with longer half-lives. Additionally, Tc-99m emits gamma rays, which can be detected by imaging equipment such as gamma cameras. This allows for high-quality imaging studies that can help diagnose a wide range of medical conditions.

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Answer:

ELECTRICITY

Explanation:

from the light of a storm

The appropriate position for a client with severe ascites would be Fowler's position. This position allows for improved breathing and reduces pressure on the abdomen.

Side-lying and Sims positions may increase discomfort and pressure on the affected area, while reverse Trendeleburg position may worsen the condition by increasing fluid accumulation in the abdomen.

The accumulation of extra fluid in the abdominal cavity is referred to as ascites. Ascites can be divided into three categories: mild, moderate, and severe, depending on the degree of fluid buildup.

Uncomplicated and refractory ascites are the two forms of ascites. Refractory ascites, on the other hand, is less common and extremely difficult to cure, leading to a high death rate. Uncomplicated ascites is the most frequent kind and responds well to treatment. Refractory ascites and renal disease are frequently linked.

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Answer:

The correct answer is 25 %

Explanation:

According to the chemical reaction:

Xe(g) + 2 F₂ (g) → XeF₄ (g)

1 mol of Xe(g) reacts with 2 mol of F₂(g), so the stoichiometric ratio os reactants is 2 mol F₂/mol Xe.

We have 2.2 mol Xe and 2.0 mol F₂, so the ratio is:

2.0 mol F₂/2.2 mol Xe = 0.909 mol F₂/mol Xe

The molar ratio of reactant we have is lower than the required, so F₂ is the limiting reactant.

By using the limiting reactant, we calculate the theoretical amount of product (XeF₄). For this, we know that 1 mol of XeF₄ is formed from 2 mol of F₂ (1 mol XeF₄/ 2 mol F₂), and we have 2.0 mol F₂:

2.0 mol F₂ x (1 mol XeF₄/ 2 mol F₂)= 1 mol XeF₄

If we only obtained 0.25 mol XeF₄, the percent yield of the experiment is:

Yield = experimental amount/theoretical amount x 100%

        = 0.25 mol XeF₄/ 1 mol XeF₄ x 100% = 25 %

The percent yield of the solution is 25%.

The equation of the reaction is;

Xe(g) + 2F₂ (g) → XeF₄ (g)

From the reaction equation;

1 mole of Xe reacts with 2 moles of F2

2.2 moles of Xe will react with 2.2 moles × 2 moles /2 moles

= 4.4 moles of F2

We can see that there is not enough  F2 hence it is the limiting reactant

2 moles of F2 yields 1 mole of XeF4

2 moles of F2 yields 2 moles ×  1 mole/2 moles = 1 mole of XeF4

% yield = actual yield/Theoretical yield × 100

% yield =  0.25 mole/ 1mole × 100

% yield =  25%

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The molar solubility of nickel hydroxide (Ni(OH)2) is the maximum amount of nickel hydroxide that can dissolve in water to produce nickel ion (Ni2+) and hydroxide ion (OH-) ions.

To calculate the molar solubility of nickel hydroxide, we need to first write down the balanced chemical equation for the dissociation of nickel hydroxide in water. This is given by:

Ni(OH)2 (s)  ↔ Ni2+ (aq) + 2OH- (aq)

The solubility product (Ksp) expression for this reaction can be written as:

Ksp = [Ni2+] [OH-]2 = 2.0×10−15

The molar solubility (x) of nickel hydroxide in water can be determined using the Ksp expression and the stoichiometry of the reaction as follows:

x × (2x)2 = Ksp

= 2.0×10−15x3 = Ksp/4

= 2.0×10−15/4

= 5.0×10−16mol3/L3x

= (5.0×10−16mol3/L3)1/3

= 1.7×10−5 mol/L

Therefore, the molar solubility of nickel hydroxide is 1.7 × 10-5 M.

This implies that in a saturated solution of nickel hydroxide, the concentration of nickel ions is 1.7 × 10-5 M and the concentration of hydroxide ions is twice this value i.e. 3.4 × 10-5 M.

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Answer:

What you created using the tightly wound wire around the nail is called a solenoid [ sōl -ë-noid]. When an electric current passes through the wire, it creates a magnetic field in the metal core (the nail). When the wire is wrapped around the iron nail and the battery is strong enough, you create a simple electromechanical solenoid.

Explanation:

Answer:

See explanation

Explanation:

The to main chemicals that lead to acid rain are SOx and NOx. The major source of oxides of sulphur are power plants while the major source of oxides of nitrogen is the combustion of fossil fuels.

B. There are two types of acid rain; wet and dry. Wet type acid rain occurs when NOx and SOx combine with water vapour in the atmosphere and fall as precipitation while in dry type, wind deposits these acidic gases/matter on the surfaces of buildings, cars, trees etc. Rain water washes off these acidic deposits and the runoff is more acidic than the rain water.

C. Natural rain water has a pH of about 5.5 due to the fact that water dissolve CO2 in the atmosphere. This means that natural rain water is also slightly acidic. Rain water that dissolves SOx or NOx is often more acidic than these hence the term 'enhanced acid rain' may be used.

Again, since precipitation could be solid or liquid, the term 'acid deposition' is better.

Two objects are placed a certain distance from each other. The amount of gravitational force between the two objects depends on their masses and the distance between them. As the masses of the objects decrease, the force of gravity between them increases. As the distance between the objects decreases, the force of gravity between them decreases.

Gravitational force is defined as the force of attraction that a body of mass M, exerts on another body that is found within its region of space that this force acts.

The law of gravitational attraction states that the gravitational force of attraction between two bodies of masses m₁ and m₂ is directly proportional to the product of their asses and inversely proportional to the square of the distance between them, r.

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Answer:

Its the second answer.

Explanation:

Answer:

my best guess is B or C. first and last don't make sense. sorry i can't give u a straight answer lol

Explanation:

Answer:

the answer is d.

1. Write the symbols for each element.

2. Find the charge for each element using the Periodic Table. Write it above each element. (because there is a (III) after nickel, the charge of nickel is +3. oxygen is in group 16, which means it has a -2 charge.)

3. See if the charges are balanced (if they are you're done!)

- when you criss cross (getting Ni2O3, the charges are canceled out, so the equation is balanced.

if you still need help or if this is confusing, look up How to Write the Formula for Nickel (III) oxide  by Wayne Breslyn on YT.

Answer:

D.) Ni2O3

Explanation:

edge 2021 (just needed the daily answer)

The chemical commonly used in both water purification and sewage treatment to provide long-term disinfection is chlorine.

Chlorine compounds, such as chlorine gas (Cl2), sodium hypochlorite (NaClO), or calcium hypochlorite (Ca(ClO)2), are added to water or wastewater to kill or inactivate harmful microorganisms, including bacteria, viruses, and parasites. Chlorine acts as a powerful disinfectant by disrupting the cellular structures and metabolic processes of microorganisms, preventing their reproduction and causing their death.

In water purification, chlorine is added to treat drinking water sources and ensure its safety for consumption. It helps to eliminate pathogens and protect against waterborne diseases. In sewage treatment, chlorine is used to disinfect wastewater before it is discharged back into the environment. This step helps to prevent the spread of disease-causing organisms and protect public health.

However, it is important to note that the use of chlorine in water treatment requires careful control and monitoring to ensure proper dosage and minimize potential risks associated with disinfection by-products.

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Answer:

s+o2=so2

Explanation:

i hope it will help u

Explanation:

=> The simplest form of

56

:

98

56:98 is

4

:

7.

4:7.

Step-by-step explanation:

Given ratio -

56

:

98

56:98

We have to reduce it to its simplest form,

For that, we have to find the GCD of the numerator as well as the denominator:

So, the GCD for

56

56 and

98

98 is

14.

14.

Now, divide both the numerator and denominator by the GCD:

=

>

56

÷

14

98

÷

14

=>

98÷14

56÷14

=

>

4

7

=>

7

4

Hence, the simplest form is

4

:

7.

4:7.

1.7 x 10²³ atoms of sulfur have a mass of  9.024 g. Rounded to three decimal places.

To find the mass of 1.7 x 10²³ atoms of sulfur:

Determine the molar mass of sulfur: Sulfur has an atomic mass of approximately 32 g/mol.

Find the number of moles: Given 1.7 x 10²³ atoms, divide by Avogadro's number (6.022 x 10²³ atoms/mol) to convert atoms to moles:
  (1.7 x 10²³ atoms) / (6.022 x 10²³ atoms/mol) = 0.282 moles

Calculate the mass: Multiply the number of moles by the molar mass of sulfur:
  (0.282 moles) x (32 g/mol) = 9.024 g

Rounded to three decimal places, the mass of 1.7 x 10²³ atoms of sulfur is 9.024 g.

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Among the given substances, the substance which will solidify before the temperature reaches 0°C is benzene.

Freezing point of any liquid is that point at which the liquid will convert into solid state at the normal atmospheric pressure.

Among the given substances butane and nitrogen has freezing point less than 0°C, water has 0°C and benzene has more than 0°C. When we cool down the temperature of the container before the 0 degree celsiuc than the beaker in which benzene is present cools gradually.

Hence benzene will solidify before the temperature reaches 0°C.

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One of the direct consequences of lactose intolerance is digestive discomfort, which can include bloating, abdominal pain, and diarrhea.

This occurs because individuals with lactose intolerance lack the necessary enzyme, lactase, to properly break down lactose, the sugar found in milk and dairy products. Without enough lactase, lactose remains undigested and can cause discomfort as it passes through the digestive system.

It is important for individuals with lactose intolerance to avoid or limit their intake of dairy products or use lactase supplements to aid in digestion. Failure to manage lactose intolerance can lead to ongoing discomfort and potential nutrient deficiencies from avoiding dairy products.

When lactose is not broken down and absorbed, it causes gastrointestinal symptoms such as bloating, gas, abdominal pain, and diarrhea. These symptoms usually occur within 30 minutes to 2 hours after consuming lactose-containing foods. Lactose intolerance is a common condition, affecting around 65% of the global population to varying degrees. It can result from genetic factors, reduced lactase enzyme production, or an injury to the small intestine.

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Answer:

d i took the test

Explanation: