How many moles are in 2.3 g of NaHCO3? Answer should have 3 digits after the decimal and a unit.

Answer:

12-18 65mg  or sometimes 130mg if its just one or 1/2 a tablet

Explanation:

Answer: 1.34 M

Explanation:

Answer:

24.9

Explanation:

Answer:

should be 22.4L

Explanation:

If fluorine is stronger than carbon, fluorine will receive a negative charge.

The electronegativity series is the order in which elements of the periodic table are ranked in terms of their negative charges.

Elements with higher electron affinity are positioned higher in the series. According to this question, fluorine is stronger than carbon.

This means that fluorine will receive a negative charge (-) to become more electronegative.

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Answer:

Plants using glucose to make ATP molecules during the process of photosynthesis which results in the plant releasing oxygen.

This is cellular respiration. ↑

Answer:

3.213J/mol

Explanation:

first specific heat capacity of water = 4200J/Kg K

Q=mass×temperature difference×specific heat capacity

Q=1.53×(24.3-20)×4200

Q=25.704 J

heat of solution= quantity of heat ÷ amount of substance

heat of solution= 25.704÷8

heat of solution= 3.213J/mol

Answer:

A chemical change occurs when the reactants chemical compositions have changed

Explanation:

a change in colour, change in temperature, change in smell, formation of a precipitate, or the formation of gas bubbles

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[tex]Important[/tex] [tex]Procedures[/tex]

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Wear these items...

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To prevent inhaling spill vapors. Avoid attempting to clean up a spill if it is in an area that isn't well-ventilated. Send out a call for help to respond to and clean up the spill.

Additionally, more severe side effects include breathing problems, coughing, wheezing, a faint feeling, or weakness that may result from significant chemical exposure. The most dangerous substances can cause immediate collapse, convulsions, and possibly even death.

Wearing personal protection equipment (often known as "PPE") helps reduce exposure to a number of risks. Gloves, foot, and eye protection, protected hearing equipment (earplugs, muffs), hard helmets, respirators, and complete body suits are a few examples of PPE.

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Based on Hess law of constant heat summation, the enthalpy of the combustion of C2H4 can be calculated from the heat of formation values of the products CO2 and H2O.

A combustion reaction is a reaction between a substance and oxygen in which light and large amounts of heat is given off.

The amount of heat evolved when one mole of that substance reacts completely with oxygen is known as the enthalpy of combustion of that substance.

The equation of the combustion of C2H4 is given below:

The enthalpy of the combustion of C2H4 can be calculated from the heat of formation of the products CO2 and H2O based on Hess law.

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Answer:

docx it is a science document

Answer:

H2C3H2O4 + 2KOH → K2C3H2O4 + 2H2O

Answer:

A mole is the amount of pure substance containing the same number of chemical units as there are atoms in exactly

12 grams of carbon-12 (i.e., 6.023 X 1023).

Explanation:

Answer:

?

Explanation:

Answer:

The inhaling of oxygen and the exhaling of carbon dioxide. The process by which cells use oxygen to break down sugar and obtain energy is called respiration.

option b mg2 magnesium dissove in water

Answer:

eyes hair skin

Explanation:

eyes you can get from parents skin and hair

Answer:

A. stored energy

Explanation:

potential energy is stored energy.

kinetic energy is the energy of motion

On the other end of the swing, the kinetic energy begins to change back into potential energy. The pendulum then comes to a complete stop! At the end of each swing, it comes to a complete stop for a brief moment. When the energy is "at rest," it is once again potential energy.

The time taken for the same volume of methane gas to diffuse is 7.1 s.

The rate at which a given mass of diffuses is inversely proportional to the molar mass of the gas.

[tex]\frac{t_2}{t_1} = \sqrt{\frac{M_2}{M_1} }[/tex]

where;

[tex]\frac{t_2}{t_1} = \sqrt{\frac{M_2}{M_1} }\\\\\frac{t_2}{20} = \sqrt{\frac{2}{16} }\\\\\frac{t_2}{20} = \frac{\sqrt{2} }{4} \\\\t_2 = \frac{20\sqrt{2} }{4} \\\\t_2 = 5\sqrt{2} \\\\t_2 = 7.1 \ s[/tex]

Thus, the time taken for the same volume of methane gas to diffuse is 7.1 s.

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The time it takes for hydrogen to diffuse is 7.07 seconds

To calculate the time it will take hydrogen gas to diffuse, we use the formula from Graham's law of diffusion.

Formula:

Where:

Make T the subject of the equation

From the question,

Given:

Substitute these values into equation 2

Hence, The time it takes for hydrogen to diffuse is 7.07 seconds.

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Answer:

The three laws of Chemical Reaction are .The law of constant proportions. The law of multiple proportions. The law of reciprocal proportions.

A chemical compound is always found to be made up of the same elements combined together in the same fixed proportion by mass.

potassium and chlorine gas ---> chloride.

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Answer:

CH3COOH

Explanation:

Answer:

In areas without excessive light pollution, a band of light can be seen spanning the night sky ... - did not match any news results.

Suggestions:

Explanation:

Answer:

stars in the milky way

Explanation:

The band of light that can be seen spanning the night sky comes from stars in the Milky Way Galaxy. The Milky Way Galaxy is a spiral galaxy that contains hundreds of billions of stars.

Answer:

RNA always folds into a single helix while DNA always folds into a double helix.

I hope this helps you

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Answer:

sunshine

Explanation:

because it's light u get it from the ecosystem

Answer:

sunshine is your correct answer

Abiotic factors are non-living things that "live" in an ecosystem that affect both the ecosystem and its surroundings. Some examples of Abiotic factors are the sun, rocks, water, and sand. Biotic factors are living organisms that affect other living organisms.

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