what are the physical characteristics of sand

0.750 tsp of baking soda in grams would be  4.49 grams.

From the available information:

If, 1 tsp of baking soda = 0.211 oz, then 0.750 tsp of baking soda would be:

 0.750 x 0.211 = 0.15825 oz

Thus, 0.750 tsp of baking soda is equivalent to 0.15825 oz of baking soda.

If 1 oz = 28.35 grams, then 0.15825 oz of baking soda will be:

28.35 x 0.15825 = 4.49 grams

In other words, 0.750 tsp of baking soda would be worth 4.49 grams of baking soda going by the available conversion factors.

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Answer:

first answer

Explanation:

Answer:

3.01 * 10 ^ 23 atoms of Pt

Explanation:

1 mole of Pt contains 6.02 * 10 ^ 23 atoms of Pt

195.084 g of Pt has  6.02 * 10 ^ 23 atoms of Pt  

97.6 g = .5 moles so  

97.6 g of Pt has 3.01 * 10 ^ 23 atoms of Pt

The 97.6 grams of platinum contains \(3.011\times 10^{23}\) atoms.

Given:

The mass of platinum = 97.6 grams

To find:

The number of platinum atoms in 97.6 grams.

Solution:

Mass of platinum = 97.6 g

Moles of platinum =\(\frac{97.6g}{195.084 g/mol}=0.500 mol\)

According to the mole concept:

1 mole = Avogadro Number = \(N_A=\) \(6.022\times 10^{23} atoms/ molecules/ions\)

The number of platinum atoms in 0.500 moles of platinum:

\(=0.500\times 6.022\times 10^{23} atoms\\\\=3.011\times 10^{23} atoms\)

The 97.6 grams of platinum contains \(3.011\times 10^{23}\) atoms.

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Explanation:

Elements contained. C. H

% by mass. 10.6. 4.4

/ each by its a.m. 10.6/12.0. 4.4/1.0

amount. 0.88. 4.4

/ each by the smaller. 0.88/0.88. 4.4/0.88

ratio of amount. 1.00. 5.00

simplest whole number ratio= 1 : 5

The empirical formula=CH5

B. methylcyclopentane

F. propane

G. n-pentane are the following molecules would a flame ionization detector (FID) be sensitive to after separation on a gas chromatography column.

flame ionization detector(FID) The most used detector in gas chromatography is the flame ionization detector . Since practically all organic molecules include carbon atoms (C), the FID is sensitive to and capable of identifying them. As nitrogen, the primary component of air, won't burn under these circumstances, and chromatography the technology is also insensitive to moisture and carbon dioxide, hydrocarbons in the environment can be found using flame ionization detector (FID).

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Answer:

See the answer below

Explanation:

Although there are no specific options available to choose from, some of the general safety measures or precautions that must be observed when using a bunsen burner are as follows:

For this experiment, students should wear a lab coat and safety eyewear. Students should not touch the flame. They need to keep loose clothing, jewelry, hair, and any flammable substances away from the flame.

Answer:

Energy Transfer 2 Quick Check

1. inside the fume hood

2. an erupting volcano

3.

many molecular collisions occurring quickly

4. Molecules collide with the glass, and the glass molecules then transmit that energy to the outside

5. Heat and matter can both transfer between the system and the surroundings.

Answer:

because life would have use fossil for their benefits.

The muscles break down glycogen into glucose which undergoes glycolysis . the end product of glycolysis in active muscles is lactate, which is transported in the blood. the liver uses energy from fally acid oxidation drive glucose. the glucose produced in the liver is transported to muscle in the bloodstream.

muscles breaks into glycogen and glucose. the lactate is always the end product in glycolysis. by the fally acid oxidation liver uses energy. the cori cycle is the metabolic pathway which involves the active muscles and the  liver. so, the fatty acid will react and it forms the carbon dioxide and the water.

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To determine the molarity of the hydrochloric acid (HCl) and the number of grams of HCl in the solution, we can use the principles of stoichiometry and the balanced chemical equation for the reaction between barium hydroxide (Ba(OH)2) and hydrochloric acid (HCl):

Ba(OH)2 + 2HCl → BaCl2 + 2H2O

a) Molarity of the acid (HCl):

From the balanced equation, we can see that one mole of Ba(OH)2 reacts with two moles of HCl. Therefore, the moles of HCl can be calculated as follows:

Moles of HCl = Moles of Ba(OH)2 = Molarity of Ba(OH)2 × Volume of Ba(OH)2 solution in liters

Moles of HCl = 0.145 M × (34.7 mL / 1000 mL/L) = 0.00504 moles

Since the volume of HCl is not specified, we cannot directly calculate the molarity of the acid. We need additional information, such as the volume of HCl used or the balanced equation stoichiometry.

b) Grams of HCl:

To calculate the grams of HCl, we need the molar mass of HCl. The molar mass of HCl is approximately 36.46 g/mol.

Grams of HCl = Moles of HCl × Molar mass of HCl

Grams of HCl = 0.00504 moles × 36.46 g/mol = 0.184 grams

Therefore,

a) The molarity of the hydrochloric acid (HCl) is not provided in the given information. Additional information is needed to calculate it.

b) The solution contains approximately 0.184 grams of HCl.

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Concentration refers to the amount of substance present.

The term concentration refers to the amount of substance present. There are many units that could be used for concentration of a solution. This makes reference easy.

To express the concentration in milligram per liter;

45/1000/1 L = 0.045 mg/L

To express the concentration in molarity;

Number of moles = mass/molar mass = 45.00 g /106 g/mol = 0.42 moles

Molarity = 0.42 moles/1 L = 0.42 M

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Answer:

c. an atom

Explanation:

Answer:

C

Explanation:

Answer:

0.05 moles of Ca(OH)2

Explanation:

The formula for molarity is: mol/L = M

First, convert 200.0 mL to L.

200 mL/1000 = 0.2 L

Next, plug in the values given.

mol/0.2 = 0.250

Rearrange the equation.

mol = 0.2*0.250

mol = 0.05

If you'd like to check it, simply plug in 0.05 to mol and divide it by 0.2. In theory, you should get 0.250.

\(CaCO_{3}\) would be more soluble in  \(H_{2}CO_{3}\)  solution compared to pure water at the same temperature.

\(CaCO_{3}\) would be more soluble in \(H_{2}CO_{3}\) solution compared to pure water at the same temperature. This is because \(H_{2}CO_{3}\), or carbonic acid, reacts with \(CaCO_{3}\) to form soluble calcium bicarbonate \(Ca((HCO)_{3})_{2}\), thereby increasing the solubility of \(CaCO_{3}\). The reaction can be represented as follows:

\(CaCO_{3}\) +  \(H_{2}CO_{3}\)  → \(Ca((HCO)_{3})_{2}\)

The formation of calcium bicarbonate is favored by the presence of excess \(H_{2}CO_{3}\), which increases the solubility of \(CaCO_{3}\) in the solution. This is because the concentration of \(H^{+}\) ions is increased, which promotes the dissolution of \(CaCO_{3}\). In contrast, in pure water, \(CaCO_{3}\) tends to form a solid precipitate due to the low solubility product constant (Ksp) of \(CaCO_{3}\).

Therefore, the solubility of \(CaCO_{3}\) in \(H_{2}CO_{3}\)  solution is greater than in pure water at the same temperature.

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Answer:

About $5.65x10^15 or $5,650,000,000,000,000

Explanation:

Given:

Volume of seawater: 2.3 mL

Grams of gold: 4.0 x 10^-10

Total volume of the ocean: 1.5 x 10^21

Price of gold: $21.66/g

Need:

1000 mL = 1 L

Find:

Dollar worth of all the gold in the world's oceans

Steps:

1. We know that there is 4.0 x 10^10 g of gold in 2.3 mL of seawater, therefore we can write it like this:

2. In order to find the amount of gold in the entire ocean we need to cancel out the 2.3 mL of seawater on the bottom. To do this we will use the volume of the entire ocean (1.5 x 10^21 L). Before we plug it into the equation, we have to match the units of the mL and the L. We will use the 1000mL = 1 L to accomplish this. The formula should now look like this:

\(\frac{4.0*10^{-10}g }{2.3mL} \frac{1000mL}{1L} \frac{1.5*10^{21}L}{1}\)

3. Solve the equation to find the amount of gold in all the oceans:

\(\frac{4.0*10^{-10}g }{2.3mL} \frac{1000mL}{1L} \frac{1.5*10^{21}L}{1} = 2.61 x 10^{14} g\)

4. Now since we found the amount of gold in all the oceans we can use this to find the total worth of all of it. We can do this by multiplying all the grams of the gold by the price of gold per gram. It can be represented like this:

\(\frac{21.66 dollars}{1 gram} \frac{2.61*10^{14}g }{1}\)

5. Get the answer:

\(\frac{21.66 dollars}{1 gram} \frac{2.61*10^{14}g }{1} = 5.65 x 10 ^ {15}dollars\)

There ya go!

Answer:

B! Hope this helps! :)

Explanation:

Answer:

About 0.01

Explanation:

1 grams of H2O = 0.0010

0.0010 x 10 = 0.01

Answer:

B

CuO

H2

Explanation:

hydrogen will oxidized to form water

Copper(II) oxide reacts with hydrogen.

\(CuO + H_2\) → \(Cu + H_2O\)

Oxidising agent - \(Cuo\)

Reducing agent - \(H_2\)

A chemical reaction that takes place between an oxidizing substance and a reducing substance.

The oxidizing substance loses electrons in the reaction, and the reducing substance gains electrons.

In the reaction  \(CuO + H_2\) → \(Cu + H_2O\)  

\(Cuo\) is the oxidising agent and  \(H_2\) is the reducing agent because \(Cuo\)  is oxidising  \(H_2\) and \(H_2\) is the reducing agent because it is removing oxygen from \(Cuo\).

Hence, option B is correct.

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Answer:

3) A single specific wavelength

Explanation:

When an electron returns to ground state, it has to emit a single photon.

When a single electron returns to the ground state from an excited state, it emits a single, specific wavelength of light. Therefore, option 3 is correct.

The separation between any two points in a wave and those identical points in the following wave cycle. This can be null-to-null, crest-to-crest, trough-to-trough, etc.

A spectrum is the term used to describe the range of wavelengths or frequencies for wave phenomena. The term was originally used to describe the electromagnetic spectrum, but it is now used to describe the sound spectrum and vibration spectrum.

When electromagnetic radiation such as radio waves, light waves, or infrared waves travel across space, they leave behind distinctive patterns. Each wave has a distinct size and form. Wavelength is the separation between peaks.

Thus, option 3 is correct.

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The pH value of the apple juice is 3.5 and The pH value of ammonia is: 8.5.

pH can be calculated using the following equation

pH = -log [H₃O⁺]

for apple juice the hydronium /hydrogen ion concentration is 0.0003

pH = -log (0.0003)

pH = 3.5

The pH value of the apple juice is 3.5

For ammonia

pH = -log (3.1 x 10⁻⁹)

pH = 8.5

The pH value of ammonia is: 8.5

NB: Not available in the option.

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Answer:

D

Explanation:

the ratio of H2 to N2 is 6:1

therefore it means that for 1 mol we have 7,8 so you multiply by 6

H+ and Cl

Na+ and OH

Cu+ and SO4

The leadership theory most closely matches bryans argument is participative theory. The correct option is b.

A leadership approach known as participatory leadership theory solicits feedback from every employee in the organization.

Before making choices or developing new processes and procedures, the team leader typically solicits feedback and suggestions from their team members.

One of the first conceptual approaches to leadership was provided by the trait theory (also known as the great man hypothesis).

Therefore, the correct option is b. participative theory.

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Answer:

yes

Explanation:

Two covalent bonds form between the two oxygen atoms because oxygen requires two shared electrons to fill its outermost shell.

The balanced molecular equation for this reaction is

2HCl(aq) + Ba(OH)2(aq) ===> BaCl2(aq) + 2H2O(l).

The neutralization of hydrochloric acid and barium hydroxide.

Molecular formula for hydrochloric acid is HCl and barium hydroxide is Ba(OH)2.

Hydrochloric acid and barium hydroxide is aqueous in nature.

HCl have one H+ ion and barium hydroxide has two hydroxide (OH) group.

So, it will take two HCl to neutralize one Ba(OH)2.

Hence, equation for this reaction is

2HCl(aq) + Ba(OH)2(aq) ===> BaCl2(aq) + 2H2O(l).

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Answer:

Explanation:

Amplitude, or the size of the wave height, affects the loudness. Larger the amplitude, the louder the volume. Period, or the time it takes for the wave to complete one round, determines the pitch. Shorter period (or higher frequency) means higher pitch.

Answer:

Convection

Explanation:

Convection is steam and the condensation of vapor.

Answer:

Dry Chemical Extinguishers

Explanation:

They are found in apartments,homes and any other place that you live.

Answer

To convert μg/l to mol/kg?

Step 1: from the mass in grams, find the number of moles by diving the mass by its molar mass

Step 2: To go from L to kg, take the volume given multiply it by density in kg/L

Taking into account the definition of dilution, the volume of the 2.00 M stock solution of KCl needed to produce the solution is 56.25 mL.

When it is desired to prepare a less concentrated solution from a more concentrated one, it is called dilution. It is accomplished by simply adding more solvent to the solution at the same amount of solute.

The amount of solute does not change, but as more solvent is added, the concentration of the solute decreases, as the volume of the solution increases.

A dilution is mathematically expressed as:

Ci×Vi = Cf×Vf

where

In this case, you know:

Replacing in the definition of dilution:

2 M× Vi= 0.450 M× 0.250 L

Solving:

Vi= (0.450 M× 0.250 L)÷ 2 M

Vi= 0.05625 L= 56.25 mL (being 1 L= 1000 mL)

In summary, 56.25 mL of stock solution are needed.

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