How many g of CO2 is made from 5.75 g
of NaHCO3?

Answer:

This is the reverse of a synthesis reaction. Replacement reactions occur when elements switch places in compounds. In a single replacement reaction, one element takes the place of another in a single compound. In a double replacement reaction, two compounds exchange elements

Answer:

1) There are people who want a child

2) There are people who are idiots and do it for fun.

Explanation:

It's simple I guess. lol

Answer:

All animals and living things need to reproduce to keep their species alive

Explanation:

Like the other person commented, some people want to have kids, and others do it for fun LOL.

Btw,

With other species, the animals that DO reproduce are the ones that are most likely to survive, like a green bird in a heavily forested environment would survive, while a pink bird wont. This helps protect their species and ensure that the "most likely to survive", reproduces, so their offspring also are most likely to survive!

:)

Answer:

Solid---> Liquid

Answer: 434 Kelvin

Explanation:

Assuming pressure is constant, the formula: V / T = V / T can be used.

However, all temperatures must first be converted to Kelvin by adding 273 to them:

(35 + 273) = 308K

Now, plug in: 606 / 308 = 854 / T → 1.98753T = 854 → 434 K :)

By the process of natural selection, individuals in Finch 1 will evolve over time to resemble individuals in Finch 2.

Natural selection is the process by which individuals who possess certain features or structures that make them better suited to their environment are able to survive and reproduce in their environment while those who do not have such features die off.

Since the preferred food for Finch 1 has become scarce due to drought, individuals in Finch 1 who have features that enable them eat larger seed will be naturally selected for survival , most population in Finch will be composed of such individuals.

Therefore, natural selection will cause individuals in Finch 1 to evolve over time to resemble individuals in Finch 2.

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Answer:

false \

explaintion

then wound pond and lakes be salt water

The salt in the ocean mainly comes from runoff from the land and openings in the seafloor. So, I would say false.

Answer: Nitric acid + Hydrogen disulfide

Explanation: To balance HNO3 + H2S = NO + S + H2O you'll need to be sure to count all of atoms on each side of the chemical equation.

Once you know how many of each type of atom you can only change the coefficients (the numbers in front of atoms or compounds) to balance the equation for Nitric acid + Hydrogen disulfide .

Important tips for balancing chemical equations:

Only change the numbers in front of compounds (the coefficients).

Never change the numbers after atoms (the subscripts).

The number of each atom on both sides of the equation must be the same for the equation to be balanced.

Answer:

409.0 grams

Explanation:

total mass-(mass of salt+mass og empty beaker)

Answer:

442

Explanation:

og empty beaker + salt

Answer:

In the followings below, the one that doesn't attract to magnets is:

Option 4, Aluminum.

Explanation:

Mainly because of the aluminum's crystal structure.

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Answer:

Aluminum

Explanation:

Ferromagnetic Metals

Ferromagnetic metals and alloys are the only magnetic metals. Out of all of the elements on the periodic table, there are only 3 metals that are attracted to magnets: iron, nickel, cobalt.

Aluminum

Aluminum is a nonferrous metal (meaning not including iron or steel) that does not include any ferromagnetic metals. Additionally, aluminum itself is not magnetic, so there is no attraction between aluminum and a magnet.

why helium is inactive

The new volume of a gas at STP that occupies 16L of space is 27.43L.

The volume of a given gas can be calculated using the following expression:

P1V1/T1 = P2V2/T2

Where;

1 × 16/273 = 2.6 × V2/468

16/273 = 2.6V2/468

0.0586 × 468 = 2.6V2

V2 = 27.43

Therefore, the new volume of a gas at STP that occupies 16L of space is 27.43L.

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Answer:

Newton's Second Law states that an object's acceleration depends on the net force upon the object, as well as the object's mass.

So, a real world example of this would be pushing a vehicle out of a ditch. If your vehicle is a motorcycle, with a relatively small mass, then you don't need to apply much force on it, as compared to if the vehicle were a pickup truck, with a large mass, which would require much more force applied to move it out of the ditch.

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Answer:

One reason why it could be important is hitting a ball. if the ball is heavy it will be harder to hit it far than if its light.

Answer:

Element

Explanation:

All matter is made up of very small particles called atoms. Atoms are the building blocks of all matter. When a substance contains only one type of atom, it is called an element.

Answer:

protons and neutrons

Explanation:

A lunar eclipse can be photographed sometimes when Earth is in between the sun and the Moon.

A lunar eclipse occurs when the Sun, Earth, and Moon align in the same line in which the Moon passes into Earth's shadow. In a total lunar eclipse, the entire Moon falls within the darkest part of Earth's shadow, called the umbra so we can conclude that claim 2  is the right answer about lunar eclipse.

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Answer:

Initial Volume ( V₁ 0.43L

Initial Concentration (M₁) 13M

Final Concentration ( M₂) 3.0M

Final Volume ( V₂) = ?

we have to determine the final volume of diluted solution .

Using Dilution Equation

[tex] \bull\bf \: M_{1}V_{1} = M_{2}V_{2} [/tex]

Put the given value

[tex]\sf \longrightarrow \: (13 \times 0.43) = (3 \times \: V_{2} ) \\ \\ \\ \sf \longrightarrow \:(5.59) = 3V_{2} \: \\ \\ \\ \sf \longrightarrow \: \:V_{2} \: = \dfrac{5.59}{3} \\ \\ \\ \sf \longrightarrow \: \: V_{2}\: = 1.86 \: litre[/tex]

Therefore,

Answer:

solidification

Explanation:

Answer: the answer is a

Explanation:

you should always keep lab coat on when in lab

Answer:

its  A. chemistry labs have a lot of things that can hurt you, even with just a few drops . its one of the most dangerous experiment types you do in science. even if your not doing an experiment  but your in the room you should have on protection in case of a spill or something.  it is always impotent  to have safety  gear on. even more so in chemistry

Answer:

D) part is the correct answer

Answer:The answer is D

Explanation:The moon is a bit more than one-fourth (27 percent) the size of Earth, a much larger ratio (1:4) than any other planets and their moons. Earth's moon is the fifth largest moon in the solar system. The moon's mean radius is 1,079.6 miles (1,737.5 kilometers).

Answer:

Explanation:

720 ml

Answer:

720 ml

Explanation:

Two common synthetic indicators are

The indicators are used to check whether the solution is basic or acidic

Answer: it is group1 or group 3 on god

Explanation:

Answer:

reaction with oxygen

Explanation:

The term oxidation was originally used to describe reactions in which an element combines with oxygen.

The correct equation for equilibrium constant is K = [CO][Cl₂] / [COCl₂].

Here K is the equilibrium constant and value of K is define as the ratio of the product of the concentration of the formed products to the product of the concentration of the reactants.

Given chemical reaction is:

COCl₂(g) ⇄ CO(g) + Cl₂(g)

In the equilibrium state, equilibrium constant will be written as:

K = [CO][Cl₂] / [COCl₂]

Hence, the correct equation for the value of the equilibrium constant is K = [CO][Cl₂] / [COCl₂].

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Answer:

Explanation:

b

Answer:

Lightbulb: electrical energy to light energy

Alarm Clock: electrical energy to sound energy

Rollercoaster: electrical energy to mechanical energy

Riding a Bike: chemical energy to mechanical energy

Explanation:

Light bulbs, alarm clocks, and roller coasters require electrical energy to work. This energy then changes into the subsequent types. Light bulbs primarily emit that energy in the form of light, alarm clocks change that energy into sound, and roller coasters begin to move (mechanical). People power bikes, and the energy in our body is stored as chemical energy. So, when we rides bikes, that energy gets turned into moving (mechanical) energy.

Answer:

Soluble salts can be made by reacting acids with soluble or insoluble reactants. Titration must be used if the reactants are soluble. Insoluble salts are made by precipitation reactions.

Making insoluble salts

An insoluble salt can be prepared by reacting two suitable solutions together to form a precipitate.

Determining suitable solutions

All nitrates and all sodium salts are soluble. This means a given precipitate XY can be produced by mixing together solutions of:

X nitrate

sodium Y

For example, to prepare a precipitate of calcium carbonate:

X = calcium and Y = carbonate

mix calcium nitrate solution and sodium carbonate solution together

calcium nitrate + sodium carbonate → sodium nitrate + calcium carbonate

Ca(NO3)2(aq) + Na2CO3(aq) → 2NaNO3(aq) + CaCO3(s)

It also works if potassium carbonate solution or ammonium carbonate solution is used instead of sodium carbonate solution. Remember that all common potassium and ammonium salts are soluble.

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Explanation:

Mix lead nitrate and sodium carbonate solutions, forming lead carbonate precipitate, filter, wash, and dry.

To obtain a pure dry sample of solid lead carbonate (PbCO₃), follow these steps:

Prepare Solutions: Dissolve lead nitrate (Pb(NO₃)₂) in water to make a lead nitrate solution, and dissolve sodium carbonate (Na₂CO₃) in a separate container to make a sodium carbonate solution.

Mixing Solutions: Slowly add the sodium carbonate solution to the lead nitrate solution, drop by drop, while stirring. A white precipitate of lead carbonate will form.

Precipitate Formation: Pb(NO₃)₂(aq) + Na₂CO₃(aq) → PbCO₃(s) + 2NaNO₃(aq)

Filtration: Carefully filter the mixture to separate the solid lead carbonate precipitate from the remaining solution (filtrate).

Washing: Wash the precipitate with distilled water to remove any remaining soluble impurities.

Drying: Place the wet lead carbonate precipitate on a filter paper and let it air dry or use an oven at a low temperature. Once completely dry, a pure sample of solid lead carbonate is obtained.

This process ensures the separation of lead carbonate from the solutions and other compounds, yielding a dry and pure sample of the desired compound.

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