I need the answer asap

Answer:

Signal noise will reduce the information in the transmitted signal.

Explanation:

Signal noise is the most likely factor that will reduce the information in a transmitted signal because:

Answer:

(a) Rate of formation of NO2 is also 0.066M/s

(b) Rate of reaction of O2 gas is 0.033M/s

Explanation:

(a) in one second, according to the equation,

2 moles of NO combines with 2moles of NO2.

Therefore 0.066M NO will still consume 0.066mole NO2.

(b) According to the equation,

2 moles NO consumes 1 mole O2, 0.0666M will consume 0.0333 mole O2

The correct order of the particles that give texture to the soil from smallest to largest is clay, silt, and sand; option C.

Soil texture refers to a physical classification of the component and types of soils based on their physical texture either as coarse or fine particles.

There are several types of soils and these various types of soils have different textures.

The types of soils and their arrangement based on increasing particle size are as follows:

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Answer:

a. Ca₃(PO₄)₂.

b. 0.010 moles of Ca₃(PO₄)₂ can we expect to be produced

c. 3.1g of Ca₃(PO₄)₂

d. Percent yield = 93.5%

Explanation:

a. Based on the reaction:

3Ca(NO₃)₂(aq) + 2Na₃PO₄(aq) → Ca₃(PO₄)₂(s) + 6NaNO₃(aq)

3 moles of calcium nitrate reacts with 2 moles of sodium phosphate producieng 1 mole of calcium phosphate.

As you can see, Ca₃(PO₄)₂ is a solid product -(s)-, that means when the reaction occurs the precipitate produced is the solid,

b. As 3 moles of calcium nitrate produce 1 mole of calcium phosphate and there are 0.030 moles of calcium nitrate

0.030 moles Ca(NO₃)₂ × (1 mol Ca₃(PO₄)₂ / 3 moles Ca(NO₃)₂) =

c. As molar mass of Ca₃(PO₄)₂ is 310.18g/mol, the mass of 0.010 moles (The expected mass) is;

0.010 moles Ca₃(PO₄)₂ × (310.18g / mol) =

d. The percent yield is defined as 100 times the ratio between the obtained yield (That is 2.9g of precipitate, Ca₃(PO₄)₂) and the expected yield, 3.1g of Ca₃(PO₄)₂:

\(\frac{2.9g}{3.1g} *100\)

(a) The product in solid state would be the precipitate. Hence, the precipitate would be Ca3(PO4)2

(b) From the balanced equation of the reaction: 3 moles of Ca(NO3)2 is required for 1 mole of Ca3(PO4)2

If there are just 0.030 moles of Ca(NO3)2, then"

3 moles = 1

0.030 moles =    1 x 0.030/3

                         = 0.01 moles of Ca3(PO4)2

In other words, 0.01 moles of the precipitate would be expected to be produced from 0.030 moles of calcium nitrate.

(c) 0.01 moles solid (Ca3(PO4)2) is expected. Mass of Ca3(PO4)2 expected:

      mass   = mole x molar mass

molar mass of Ca3(PO4)2 = 310.18 g/mol

mass of Ca3(PO4)2 expected to be produced = 0.01 x 310.18

                                                                       = 3.1018 g

Hence, 3.1018g of solid is expected to be produced.

(d) Percentage yield = actual yield/theoretical yield x 100

                          = 2.9/3.1018 x 100

                               = 93.5%

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The valency of magnesium is 2 because it has two valence electrons in its outermost shell. Magnesium belongs to the second group of the periodic table, which means it has two electrons in its outermost shell or valence shell. In order to achieve a stable configuration, magnesium tends to lose these two valence electrons to form a positively charged ion with a charge of 2+. This makes magnesium a bivalent or divalent element with a valency of 2.

Answer:

Because the outer shell of magnesium contains 2 atoms

Answer: A. Simple structure, molecule, single bonds, two elements

Answer:

Carbon Dioxide is and example of an element and Carbon is an example of compound

Answer:

The element with 17 protons, 18 electrons and 17 electrons(because number of protons is equal to number of electrons) is a negatively charged Chlorine ion. (Cl-)

Answer:

0.0730

Explanation:

decimal 0s don't count except for ones at the end

3.00 x 108 m/s should be written in scientific notation. Medical Notation (numbers less than 1.0) Add a decimal place after the decimal, to the right. To the left of the decimal point, there should only be one number. The brand-new number ranges from 1.0000 to 9.9999.

For the purpose of providing an exact result, certain elements of scientific notation must be included. In scientific notation, all numbers have the format "m x 10n. Important components for determining the scientific notation include the following:

Decimal: You move the decimal a specific number of times to the right or left of the coefficient to discover the scientific notation until it becomes a number equal to or greater than one and less than 10.

Coefficient: To calculate this value, the decimal point must move a predetermined amount of times. An amount that is one or larger and less than ten is referred to as a coefficient.

Base: The base number is always 10. The exponent comes into play when multiplying to arrive at the final solution.

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Answer:

2. Energy

Explanation:

Answer:

energy

Explanation:

Answer:

35.0 atm + 5.0 atm + 25.0 atm = 65 atm

Explanation:

Partial pressure + Partial pressure + Partial pressure = Total pressure

The concept Dalton's law of partial pressures is used here to determine the total pressure of the gas. The total pressure of the gas is the sum of partial pressures of the gas. Here the total pressure is 65 atm.

The pressure exerted by a mixture of two or more non-reacting gases enclosed in a definite volume is equal to the sum of the partial pressures of the component gases.

The partial pressure of a component gas in a mixture is the pressure that gas would exert if present alone in the vessel at the same temperature as that of the mixture.

Let p₁, p₂, p₃, etc. are the partial pressures. Then the total pressure is given as:

P = p₁ + p₂ + p₃

P = 35.0 + 5.0 + 25.0

P = 65 atm

Thus the total pressure is 65 atm.

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Answer:

Dehydration synthesis reactions build molecules up and generally require energy, while hydrolysis reactions break molecules down and generally release energy. Carbohydrates, proteins, and nucleic acids are built up and broken down via these types of reactions, although the monomers involved are different in each case.

Explanation:

Answer: d

Explanation:because it makes sence i think

a. We have 210 pennies

b. We need 140 dimes to buy as much candy as possible.  

c. All these dimes should weigh 320.6 g.

d. We can buy 70 pieces of candy.

e. The total weight of the candies will be 2864.4 g

f. Using 3 pennies and 2 dimes as a pack to buy candies we can not buy more pieces of candy because we would need more pennies.    

a. To find the number of pennies we need to divide the total mass of pennies (\(m_{t_{p}}\)) by the mass of each one of them (\(m_{p}\)):

\( N = \frac{m_{t_{p}}}{m_{p}} = \frac{636.3 g}{3.03 g} = 210 \)

Hence, we have 210 pennies.  

b. We can find the total number of pieces in multiples of four that we can buy with 210 pennies. To buy one piece we need to use 3 pennies and 2 dimes, so the number of total pieces is:

\( 3P = 210 \)

Where P is for pennies

\( P = \frac{210}{3} = 70 \)

Hence, we can buy a total of 70 pieces in multiples of four candies.

Now, from this total of 70 pieces, we can use the following number of dimes:

\( 2D = 70 \)

Where D is for dimes      

\( D = \frac{70}{2} = 140 \)

Therefore, we need 140 dimes to buy as much candy as possible.

c. The mass of the total amount of dimes (\( m_{t_{d}}\)) is:

\( m_{t_{d}} = 140*2.29 g = 320.6 g \)

Hence, all these dimes should weigh 320.6 g.

d. We know that we can buy a total of 70 pieces in multiples of four candies (calculated above).

Then, we can buy 70 pieces of candy.

e. Knowing that each piece is a multiple of 4 candies, the weight of the 70 pieces of candy (\(m_{c}\)) is:

\( m_{c} = 70*4*10.23 g = 2864.4 g \)      

f. Since we can buy pieces in multiple of four candies using 3 pennies and 2 dimes if we have now twice as many dimes, we can not buy more pieces of candy because we would need more pennies.      

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Explanation:

Cooking utensils, such as pots, pans and menu trays, are often made from aluminium because it is lightweight and conducts heat well, making it energy-efficient for heating and cooling. These properties also make it a preferred material for packaging.

The molarity of the NiSO₄ solution made by dissolving 38.81 grams of nickel (ii) sulfate, NiSO₄, in enough water to make 0.467 liters of solution is 0.535 M

First, we shall obtain the mole of 38.81 grams of nickel (ii) sulfate, NiSO₄. Details below:

Mole of NiSO₄ = mass / molar mass

= 38.81 / 154.75

= 0.25 mole

Now, we shall determine the molarity of the solution. Details below:

Molarity of solution = mole / volume

= 0.25 / 0.467

= 0.535 M

Thus, the molarity of the solution is 0.535 M

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Answer

Procedure

Data

Use the calibration curve to determine the value of the diluted unknowns as indicated in the image below.

At an absorbance value of 0.5, the concentration is 0.036

At an absorbance value of 0.750, the concentration is 0.056

At an absorbance value of 1, the concentration is 0.074

The value of 1.25 is outside the graph but by creating an equation we will have

y=13.146 +0.0226

where we can replace y as the absorbance 1.25 and solve for X (concentration) we get a value of 0.0933 M

At an absorbance value of 1.25 , the concentration is 0.0933

To solve the concentration we can use the formula provided now that we know the diluted concentration.

After applying the formula and calculating the average and standard deviation the complete table looks as follows

Answer:

A mixture of ethane and ethene occupies 40 litre at 1.00 atm and at 400 K.The mixture reacts completely with 130 g of O2 to produce CO2 and H2O . Assuming ...

Missing: 32 ‎Br2

Answer: Does the animal prey on other animals? Is the animal a carnivore?

Answer:

2.03 atm

Explanation:

pV= nRT

p= ?

V = 29.2 L

n = 2.03 mol

R = 0.08206

T =  83 °C + 273 = 356K

p = nRT / V

p = (2.03 * 0.08206 * 356 ) / 29.2

p = 2.03 atm

The molar mass of cobalt (II) chloride hexahydrate is:

( 1 x molar mass of Co) + (2 x molar mass of Cl) + (6 x molar mass of H2O)

= (1 x 58.93) + (2 x 35.45) + (6 x 18.02)

= 237.93 g/mol

The mass of the water in the compound is:

(6 x molar mass of H2O)

= (6 x 18.02)

= 108.12 g/mol

So the mass of cobalt (II) chloride in the compound is:

1.691 g - 108.12 g/mol = 1.5829 g

If all the water is heated off, the remaining mass would be 1.5829 g.

Answer:

D.) mole, 6.022 x 10²³

Explanation:

Avogadro's Number is a ratio which states that there are 6.022 x 10²³ particles per every one mole.

The uncertainty principle was discovered by Heisenberg. It states that ΔpΔx ≥ h where Δp is the uncertainty in knowing the momentum of the particle (momentum equals mass times velocity), Δx is the uncertainty in knowing the position of the particle, and h is Planck's constant (h=6.63×10⁻ ³⁴Js). If we know very precisely the position of the particle, we will not be able to know its speed so precisely and vice versa, regardless of how good our measuring device is.

So the answer is option d)

The net ionic equation for this gas evolution reaction is H+(aq) + SO32-(aq) SO2(g) + H2O, while the balanced molecular equation is 2HBr(aq) + K2SO3(aq) SO2(g) + 2H2O(l) + 2KBr(aq) (l).

The reaction's chemical formula is K2CO3(aq)+2HBr(aq)2KBr(aq)+CO2(g)+H2O. (l) Strong electrolytes in the process, K2CO3, HBr, and KBr totally dissociate in water to generate their corresponding ions.

A salt (the KBr) and water will be created when the HBr and KOH interact. While balancing this equation, make careful to count both hydrogen atoms on the reactants side.

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The molecules move past each other but do not go very far apart from each other is ice cream because ice cream is a colloidal solution.

Colloidal solution is defined as a mixture in which microscopically dispersed insoluble particles of one substance are suspended in another substance. It is also called as colloids.

There are mainly four types of colloids

Thus, the molecules move past each other but do not go very far apart from each other is ice cream because ice cream is a colloidal solution.

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