This Venn diagram is used to compare the products and reactants of a reaction of baking soda and vinegar. What could be put into the intersection? Precipitates Chemical compounds Solid compounds Gases

Answer:

The extract is boiled with FeSO4 and acidified with concentrated H2SO4. The appearance on Prussian blue colour indicates the presence of nitrogen

Explanation:

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0 J

Work = Force * Displacement

Since displacement is 0 m (object isn't moving), work would also be 0.

Explanation:

1. Measure your waste

It is easier to manage and track your improvement on something that is measured. Start by recording the types and quantities of waste materials generated within your business.

This could just be a quick visual assessment and estimation of amount and types of waste per week. As you change how you manage your waste, you can compare and see what difference your changes make to the amount of waste disposed to landfill.

2. Reduce

To reduce the amount of waste going to landfill, consider:

can waste be avoided or reduced by the way you procure goods and services or by changing your business operations?

does another local business have a use for the waste materials produced by your business?

what materials can be targeted for recycling?

3. Recycle

Find out what options are available locally for business recycling.

4. Collection services

It is a good idea to find out how levy fees will be managed by your waste service provider, and find out more about your waste collection services—how it impacts your ability to recycle and what options are available to you.

5. Separating waste

It’s important to ensure that waste is correctly separated for recycling. Putting the wrong waste in contaminates the recycling. Check out the free-to-download recycling signage to help businesses communicate correct recycling and waste separation behaviours.

3.6 ×10²⁴ atoms fluorine are in 410 g of UF\(_6\). Fluorine is an atomic number 9 chemical element with both the symbol F.

Fluorine is an atomic number 9 chemical element with both the symbol F. This is the smallest halogen as well as occurs as a very poisonous, pale yellow diatomic vapor under normal circumstances.

It is exceptionally reactive being the most electronegative active catalyst, reacting with all other elements save the light inert.

mole =  410 / 352.02 =1.16mole

number of atom= 1.16× 6.022×10²³=6.98×10²³

number of atom of fluorine =6× 6.98×10²³= 3.6   ×10²⁴ atoms

Therefore, 3.6 ×10²⁴ atoms fluorine are in 410 g of UF\(_6\).

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Answer:

Gas exchange takes place in the millions of alveoli in the lungs and the capillaries that envelop them. As shown below, inhaled oxygen moves from the alveoli to the blood in the capillaries, and carbon dioxide moves from the blood in the capillaries to the air in the alveoli.

Explanation:

Answer:

Speed = 8.34 m/s

Explanation:

Given =

Distance = 250 meters

Time = 30 seconds

Solution =

Speed = Distance / Time

Speed = 250/30

Speed = 8.3333333 m/s.

Speed = 8.34 m/s

Answer:

8.33 meters/sec.

Explanation:

Distance = 250 Meters

Time = 30 sec.

Velocity = Distance / Time

= 250 Meters

30 sec.

= 8.33 meters/sec.

Answer:

your answer will be b) bonds are breaking

To calculate the atomic mass in grams, we need to multiply the number of moles by the molar mass of the compound. The atomic mass of 0.35 moles of CH4 is 5.6 grams.

In this case, CH4 is composed of one carbon (C) atom with a molar mass of 12.01 g/mol and four hydrogen (H) atoms with a molar mass of 1.01 g/mol each. The molar mass of CH4 can be calculated as follows:

Molar mass of CH4 = (1 x molar mass of C) + (4 x molar mass of H)

                = (1 x 12.01 g/mol) + (4 x 1.01 g/mol)

                = 12.01 g/mol + 4.04 g/mol

                = 16.05 g/mol

Now, we can calculate the atomic mass in grams by multiplying the number of moles (0.35 moles) by the molar mass (16.05 g/mol):

Atomic mass in grams = 0.35 moles x 16.05 g/mol

                    = 5.6 grams

Therefore, the atomic mass in grams of 0.35 moles of CH4 is 5.6 grams.

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In general, alcohols dissolve when mixed with water because the hydroxyl groups in alcohols can form hydrogen bonds with water.
The hydroxyl groups (-OH) in alcohols are polar, which means that they have a slight positive and negative charge. This allows them to form hydrogen bonds with water molecules, which are also polar. As a result, alcohols are able to dissolve in water, creating a homogeneous solution.
It is important to note that the solubility of alcohol in water decreases as the size of the alcohol molecule increases. This is because larger alcohol molecules have more nonpolar carbon-hydrogen bonds, which do not interact with water molecules as well as the polar hydroxyl groups do.
In summary, alcohols dissolve in water due to the presence of polar hydroxyl groups, which can form hydrogen bonds with water molecules. However, the solubility of alcohols decreases as the size of the alcohol molecule increases.

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Answer: B

Explanation:

At equilibrium, the rate of the forward reaction is equal to the rate of the reverse reaction, and thus the concentrations of the reactants and products must be constant.

Scale is defined as the measurement of unit ranges, that has been corresponds to the measurements.

The units for the measurement of temperature are given as:

\(\rm 0^\circ C\;=\;273\;K\;=\;32\;F\)

The scale used for the measurement of the freezing is the temperature scale. The temperature is measured in the units of Kelvin, Fahrenheit , and Celsius.

The unit scale for the measurement of freezing of water are

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structure of the principal organic product formed by the free-radical bromination of methylcyclopentane. is the major product is formed by the substitution of Br radical on tertiry carbon.

In the presence of UV light, 1-Methylcyclopentane reacts with Bromine molecules. This type of reaction is known as a free radical reaction. Bromine will first become a bromine free radical and then attack the desired carbon to produce the desired product. Organic products are grown in an agricultural system that does not use chemical fertilisers or pesticides and takes an environmentally and socially responsible approach. Atoms or groups of atoms with a single unpaired electron are referred to as free radicals. These radicals are involved in a free radical substitution reaction. When a bond splits evenly, each atom receives one of the two electrons, and free radicals form. This is referred to as homolytic fission.

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Answer:

19

Explanation:

The total distance traveled by the toy cay would be 19 cm.

The total distance traveled should not be mistaken for total displacement. While displacement measures the distance and direction from the starting position of the toy car relative to its final position, the total distance traveled is calculated by adding all the movements of the toy car together. Hence;

Total distance traveled = 9 + 4 + 6 = 19 cm

Answer:

19

Explanation:

because all you have to do is add up the distance you see on the there

example : a toy train went 6m to the right and 7m to the left and then it went 9m straight

6+7=13

13+9=22

1) There is a new product on the right hand side

2) Magnesium and oxygen

3) The stoichiometric coefficient of the reactants

4) The number of atoms of each of the elements in the molecule

5) At the start of the reaction, the elements are isolated while at the end of the reaction, the elements are combined.

We have to note that when we talk about a chemical reaction we mean the combination of two or more substances so that we can be able to get a product that is different from the reactants.

in this case, we can see that the reaction that has taken place is the combination of the oxygen molecule and the magnesium atom so as to give the magnesium oxide compound.

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The molar mass (g/mol) of the unknown solid is 155.36 g/mol.

A sample size of unknown solid acid, m = 0.615 g, The concentration of NaOH, c = 0.1032 m, The mole ratio of the unknown solid to NaOH is 1:1, The volume of NaOH used, V = 38.26 mL

We can calculate the number of moles of NaOH used as follows,

n = c * V / 1000 = 0.1032 * 38.26 / 1000 = 0.00395632 mol

Since the mole ratio of an unknown solid to NaOH is 1:1, we know that the number of moles of an unknown solid is also 0.00395632 mol.

The molar mass of the unknown solid can be calculated as follows,

M = m / n = 0.615 / 0.00395632 = 155.36 g/mol

Therefore, the molar mass of the unknown solid is 155.36 g/mol.

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Answer: A

Explanation:

 heat always passes from a warmer object to a cooler object until all objects are the same temperature. Conduction is how heat travels between objects that are touching. Conduction travels fastest through solids, but liquids and gases can also conduct heat.

These desert dwelling, nocturnal creatures are very tough and low maintenance. Scorpions' exoskeletons and venomous stingers give them great protection, and their low food and water needs and ability to slow down their metabolism allow them to survive in the harshest environments.

Answer:Electrolysis is a process of passing electric current through water thereby splitting water molecules into hydrogen and oxygen.It is a process of breaking apart water molecules using electric current.In electrolysis of water, we use two copper wires, one twelve-volt battery, and some drinking water to do the tests.

Explanation:

Answer: The electrolysis of water will result in two hydrogen atoms and one oxygen atom.

Explanation: Hope this helps you :)

Answer:

It depends

(plum will spoil more quickly at warm temperatures)

Explanation:

1) pH of the solution is 2.50pH; 2) 3.162 x 10⁻³ M ; 3) [ CH₃COO⁻ ] = [H⁺] = 1.33 x 10⁻³M ; 4) concentration of CH₃COOH at equilibrium will be:(1.0 - 1.33 x 10⁻³) M = 0.9987 M  ; 5) Ka= 1.77 x 10⁻⁵ 6) The % error is 1.14%. Some of the possible sources of this error include systematic errors, errors in measurement, human errors, etc.

I. Determination of Ka of acetic acid A. Measure out 10.0 mL of 1.0 M acetic acid (CH3COOH) into a beaker.1. Measured pH of the solution is 2.50pH

2. Calculate the H₃O⁺ at equilibrium for this solution. (include units) H3O+eq The pH of the solution is pH = 2.50[H3O⁺] = 10⁻².⁵ = 3.162 x 10⁻³M [H3O⁺] = 3.162 x 10⁻³ M

3. Calculate the CH₃COO- at equilibrium for this solution. (include units) CH₃COO⁻  eqThe equation for the ionization of acetic acid is:CH₃COOH (aq) ⇋ H⁺ (aq) + CH₃COO⁻ (aq)Let the concentration of [ CH₃COO⁻ ] be x.The initial concentration of acetic acid is 1.0 M, so the initial concentration of H⁺ is also 1.0 M.As the reaction is in equilibrium, the concentration of CH₃COOH will be (1 - x) M.As the equation states, the molar concentration of H⁺ ion is equal to the molar concentration of CH₃COO⁻ ion. Therefore:[H⁺] = xM and [CH₃COO⁻] = xM

For the reaction CH₃COOH (aq) ⇋ H⁺ (aq) + CH₃COO⁻ (aq)K = [H⁺] [CH₃COO⁻ ]/ [CH₃COOH]Therefore, K = x² / (1 - x)1.76 x 10⁻⁵ = x² / (1 - x)x² = 1.76 x 10⁻⁵ (1 - x)x² = 1.76 x 10⁻⁵ - 1.76 x 10⁻⁵x = [ CH₃COO⁻ ] = [H⁺] = 1.33 x 10⁻³M

4.  CH₃COOH eq The initial concentration of acetic acid is 1.0 M.As the concentration of  CH₃COO⁻  at equilibrium is 1.33 x 10⁻³ M, the concentration of CH₃COOH at equilibrium will be:(1.0 - 1.33 x 10⁻³) M = 0.9987 M

5. The equation for the ionization of acetic acid is: CH₃COOH (aq) ⇋ H⁺ (aq) + CH₃COO⁻ (aq)K = [H⁺][ CH₃COO⁻ ]/ [CH₃COOH]Substituting the values: K = (1.33 x 10⁻³)² / (0.9987)K = 1.77 x 10⁻⁵.

6. The reported value for the acid dissociation constant of acetic acid is 1.75 x 10⁻⁵. The % error is calculated using:% error = [(experimental value - accepted value) / accepted value] x 100% error = [(1.77 x 10⁻⁵ - 1.75 x 10⁻⁵) / 1.75 x 10⁻⁵] x 100% error = 1.14%. The % error is 1.14%. Some of the possible sources of this error include systematic errors, errors in measurement, human errors, etc.

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Answer:

14.2 L H2S

Explanation:

Mole ratio

2 mol H2S:2 mol SO2

We are just looking for volume, so the required amount is the same as the produced amount as long as the mole ratio is balanced.

The balanced equation is: 2H2S + 3O2 → 2SO2 + 2H2O. Mole ratio 2 mol H2S:2 mol SO2.

Two factors can be used to identify stoichiometry problems:  the information provided in the problem and  he information that needs to be solved for, also known as the unknown.

The given and the unknown might both be reactants, could both be products, or could both be products with one of them acting as a reactant. Mole amounts can be used to express the substance quantities.

However, it is typical in a laboratory setting to calculate a substance's mass in grams to determine how much of it is present. A gaseous substance's volume can be used to express its quantity.

Therefore, The balanced equation is: 2H2S + 3O2 → 2SO2 + 2H2O. Mole ratio 2 mol H2S:2 mol SO2.

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Answer:

The second student is right.

Explanation:

The coyote feed on not only phalaropes but many other organisms present in the environment for its survival. There are many other organisms present in the ecosystem such as mice, squirrel, cactus fruit etc. The coyote feeds on phalaropes, the phalaropes feeds on brine shrimp and the brine shrimp feeds on algae for its survival so in this way the ecosystem moves in the forward direction. The coyote feeds on phalaropes so the energy that is present in phalaropes transferred into coyote which only 10 % while the remaining is released in the atmosphere in the form of heat energy.

Answer:

applied force .....I'm pretty sure

Answer:

A. Applied forces aka Contact forces

Explanation:

Thos force is created when you apply forces to an object as in a push/pull or other physical ways.

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Anygays-

The value of ΔH for the reaction CO(g) + H₂(g) + O₂(g) → CO₂(g) + H₂O(g) is -1272 kJ.

To calculate the enthalpy change (ΔH) for the given reaction, we can use Hess's law, which states that the overall enthalpy change of a reaction is equal to the sum of the enthalpy changes of the individual reactions involved.

Given the enthalpy changes:

1. 2 C(s) + O₂(g) → 2 CO(g)... ∆H = -222 kJ

2. C(s) + O₂(g) → CO₂(g)... ∆H = -394 kJ

3. 2 H₂(g) + O₂(g) → 2 H₂O(g)... ∆H = -484 kJ

We need to manipulate these reactions to obtain the desired reaction:

1. Reverse reaction 2: CO₂(g) → C(s) + O₂(g)... ∆H = +394 kJ

2. Multiply reaction 2 by 2 to balance carbon atoms: 2 CO₂(g) → 2 C(s) + 2 O₂(g)... ∆H = -788 kJ

3. Leave reaction 3 unchanged: 2 H₂(g) + O₂(g) → 2 H₂O(g)... ∆H = -484 kJ

By adding reactions 2 and 3, we obtain the desired reaction:

CO(g) + H₂(g) + O₂(g) → CO₂(g) + H₂O(g)... ∆H = -788 kJ + (-484 kJ) = -1272 kJ

Therefore, the value of ΔH for the given reaction is -1272 kJ.

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Answer:

Aluminum is an element

Explanation:

Aluminum is the most abundant metal in the earths crust with an atomic number of 13.

Answer:

ABintense pressure and breathin

Explanation:

because scientist never have the tech to go deeper

Answer:

B. Problems with breathing

C. Intense pressure

The following combinations could be used in an acid-base buffer system-NH₃/NH₄CLCH₃COOH/CH₃COONaHNO₂/KNO₂

Acid-base buffer system- In the event of an excess of acid or base, a buffer is a chemical system that reduces the shift in hydrogen ion concentrations, preventing a drastic change in fluid pH. The chemical that takes up the ions most frequently either acts as a weak acid, taking up hydroxyl ions, or a weak base, taking up hydrogen ions.

Acetic acid (CH₃COOH and sodium acetate, CH₃COONa) in solution is an illustration of a buffer made up of a weak acid and its salt. A mixture of ammonia (NH₃(aq)) and ammonium chloride (NH₄Cl(aq)) is an illustration of a weak base and its salt buffer.

Thus, NH₃/NH₄CL, CH₃COOH/CH₃COONa, HNO₂/KNO₂ are used in an acid- base buffer system.

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Your question is incomplete please find the complete question over the internet.

Explanation: