compound present in many foods has the formulka c44h86o8np. to which class of molecules does this compound belong?

Answer:ice crystals

Explanation:

Answer: 3.2

Explanation:

Answer  the ratio of Be to At is 1:2 in the compound

Explanation:

Be in Periodic Table 2A has 2 valence electrons in its outer orbital and needs to give them away.  When it gets rid of 2 negatives, its charge is +2.

At in Periodic Table 7A has 7 valence electrons in it outer orbitals and needs one more electron.  2 AT atoms each accept one electron from Be and each has a charge of -1.  The Be ion of +2 charge is balanced by the two At ions of -1 charge, so the ratio of Be to At is 1:2

Answer:

Ecosystems have lots of different living organisms that interact with each other. The living organisms in an ecosystem can be divided into three categories: producers, consumers and decomposers. They are all important parts of an ecosystem. Producers are the green plants.

Explanation:

Hope this helps

Answer:

957.7mL

Explanation:

Using the formula below;

CaVa = CbVb

Where;

Ca = concentration of acid (M)

Va = volume of acid (mL)

Cb = concentration of base (M)

Vb = volume of base (mL)

According to the information provided in this question:

Ca = 0.166 M

Cb = 0.013 M

Va = 75mL

Vb = ?

Using CaVa = CbVb

0.166 × 75 = 0.013 × Vb

12.45 = 0.013Vb

Vb =12.45/0.013

Vb = 957.7mL

The best way to take advantage of Catholic Schools Week is to volunteer and get involved in community events.

Catholic Schools Week is an annual celebration of Catholic education, typically held in the United States during the last week of January. To take advantage of this week, you can participate in the events and activities organized by your local Catholic school or parish.

Volunteer at your local Catholic school to help with events, projects, or activities. You can also offer to mentor students or assist teachers. Catholic Schools Week often includes events like open houses, talent shows, and sports games.

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The electrostatic force is also called the Coulomb's force. It is an example of a non-contact force. The number of electrons missing from each ion is 1.

The electrostatic force is defined as an attractive and repulsive force between the particles and are caused due to the electric charges. The electrostatic force between the stationary charged bodies is called the electrostatic force.

The equation of electrostatic force is:

F = kq²/r²

q = ne

F = k (ne)² / r²

n = √r²F / ke² = r/e √F/k

k = 9 × 10⁹ Nm²/c²

e = 1.6 × 10⁻¹⁹ C

n = 2.1 × 10⁻¹⁰ /  1.6 × 10⁻¹⁹ √ 5.4×10⁻⁹ / 9 × 10⁹

= 1 × 10²⁹

Thus the number of electrons missing from the ion is approximately 1.

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One mole of fluorine gas contains 1.204 x 10^24 diatomic molecules of fluorine. Where each molecule consists of two fluorine atoms bonded together.

One mole of any substance contains Avogadro's number of particles, which is around equivalent to 6.02 x 10^23 particles. On account of fluorine gas, every particle of fluorine gas comprises of two fluorine iotas reinforced together to shape a diatomic particle. Thusly, one mole of fluorine gas would contain Avogadro's number of diatomic atoms, which is equivalent to twice Avogadro's number. Hence, there would be 2 x 6.02 x 10^23 or 1.204 x 10^24 particles of fluorine in one mole of fluorine gas. This is an essential idea in science and is utilized to change over between the quantity of particles and how much substance in a given example.

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Answer:

3NaOH (aq) + Fe(NO₃)₃ (aq) → Fe(OH)₃ (s) + 3NaNO₃ (aq)

Explanation:

Step 1: RxN

NaOH (aq) + Fe(NO₃)₃ (aq) → Fe(OH)₃ (s) + NaNO₃ (aq)

Step 2: Balance RxN

We need 3 OH's on both sides.

We also need 3 NO₃'s on both side.

3NaOH (aq) + Fe(NO₃)₃ (aq) → Fe(OH)₃ (s) + 3NaNO₃ (aq)

Based on the percentage mass of magnesium oxide in the sample, the mass of Magnesium oxide in the sample is 0.42 g.

Magnesium is a metallic element with an atomic number of 12.

Magnesium is an important mineral that is used as a supplement s well as in drugs such as milk of magnesia.

Considering the given magnesium supplement:

1.02 g magnesium supplement contains 25.0% Mg by mass.

Magnesium is present in the supplement as magnesium oxide, MgO.

The molar mass of magnesium oxide, MgO = 40.30 g/mol

Molar mass of magnesium = 24.0 g

Percentage mass of Magnesium oxide in the sample = 40.3 / 24 * 25

Percentage mass of Magnesium oxide in the sample = 42%

Mass of Magnesium oxide in the sample = 42 % * 1.02

Mass of Magnesium oxide in the sample = 0.42 g

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Answer:

it says tick the box next to the correct answer so it'd be right to tick the last box:

The particles of the gas slow down

Answer:

Atomic# : 11 ( # of protons)

mass# : 22 ( sum of protons + neutrons)

neutrons: 11 (mass# -atomic#)

# of electrons : 10 (atomic# - charge)

Answer:

a changes more because it going higher

Explanation:

Answer:

They will be the same because amplitude doesn't affect speed. A physics teacher attaches a slinky to the wall and begins introducing pulses with different wavelength. The denser the medium at the compression, the greater the amplitude of the wav

Explanation:

Answer:

Without the respiratory system your blood would be useless. The circulatory and respiratory systems work together to circulate blood and oxygen throughout the body

Explanation:

Answer:

Answer: Organic acids form when a carboxyl group (−COOH) is substituted for one of the hydrogen atoms in a hydrocarbon.

The mass of a substance is the product of its density and volume. Thus, the   mass of the dissolved solids with a density of 125 mg/dm³ with a volume of 250 cm³ is 31.25 mg.

Density of a substance is the measure of its mass per unit volume. Thus it describes how much denser the substance is in a given volume. Mathematically it is the ratio of mass to the volume.

Density of a substance depends on the mass, volume, bond type, temperature and pressure. The ratio of density of a substance with the density of water is called its specific gravity.

It is given that the density of the dissolved solids is 125 mg/dm³ and the volume is 250 cm³ or 0.25  dm³. Thus the mass can be calculated as follows:

density = mass/volume

 mass   = density × volume

             = 0.25  dm³  ×  125 mg/dm³

             = 31.25 mg

Hence, the mass of the dissolved solids in the river wayer is 31.25 M=mg.

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2194.14is the new volume .These laws are described by equations that are variations on the ideal gas law, PV is nRT

Explanation:

The ideal gas law, PV = nRT,

97 * 0.975*29 = 2742.675/1.25 = 2194.14.    

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The bond angles in SF₅⁺ are expected to be 90°, 120°, and 180°.

The correct option is E.

Bond angles refer to the angles between the bond linking the atoms of elements in a compound or ion.

The bond angles exist as a result of either electrical repulsion between the electrons in the bonds.

The ion SF₅⁺ contains one atom of sulfur and five atoms of fluorine linked together by covalent bonds. The shape of the ion or the molecular geometry is square pyramidal. Hence, the bond angles are 90°, 120°, and 180°.

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The act of depositing material, especially by a natural process; the resultant deposit.

Answer:

the act of deposing someone especially a monarch

Answer: combustion causes a chemical reaction between nitrogen and oxygen in the engine.

Explanation:

Nitrogen oxides are produced in combustion processes, partly from nitrogen compounds in the fuel, but mostly by direct combination of atmospheric oxygen and nitrogen in flames. Nitrogen oxides are produced naturally by lightning, and also, to a small extent, by microbial processes in soils.

Answer:

when fuels are burned in vehicle engines high temperatures are reached. at these high temperature nitrogen and oxygen from the air combine to produce nitrogen

Answer:

Just look at which one it doesn't show.

Explanation:

Characteristics of compounds

1. Components in a compound are present in a definite proportion.

2. It has a homogeneous composition.

3. Particles in a compound are of one kind.

4. A compound is made up of one or more atoms of the same or different elements.

5. In a compound the elements are present in a fixed ratio by mass.

6. A compound can be divided into simpler substances by a chemical process.

7. The physical and chemical properties of a compound are completely different from those of its constituents.

Between OH and C=O, the strong nucleophile is OH and the strong electrophile is C=O.

1. OH (hydroxide ion) is a strong nucleophile because it has a negative charge on the oxygen atom, which allows it to donate its lone pair of electrons to an electrophilic center.
2. C=O (carbonyl group) is a strong electrophile because the carbon atom has a partial positive charge due to the electronegativity difference between carbon and oxygen atoms in the double bond. This makes the carbon atom highly susceptible to nucleophilic attack.

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I think that the answer is D

The gas that was least abundant in Earth's early atmosphere, prior to 2 billion years ago, was likely oxygen (O2). The correct option is A).

This is because photosynthetic organisms, which produce oxygen as a byproduct, did not appear until later in Earth's history. The early atmosphere was likely dominated by gases such as carbon dioxide (CO2), methane (CH4), water vapor (H2O), and ammonia (NH3).

The early atmosphere of Earth, before 2 billion years ago, was primarily composed of nitrogen (N2), carbon dioxide (CO2), and water vapor (H2O). However, the least abundant gas in the early Earth's atmosphere was likely oxygen (O2).

Oxygen was not present in significant amounts in the early atmosphere of Earth because it was being continuously consumed by geological and biological processes. Geological processes such as weathering of rocks and minerals absorb oxygen, while biological processes such as photosynthesis and respiration release oxygen.

It wasn't until the emergence of photosynthetic organisms, such as cyanobacteria, that oxygen levels began to rise significantly. These organisms were able to convert sunlight into chemical energy, producing oxygen as a byproduct.

Therefore, it is safe to assume that oxygen was the least abundant gas in the early Earth's atmosphere, while nitrogen, carbon dioxide, and water vapor were the most abundant.

Over time, as photosynthetic organisms evolved and oxygen levels increased, the composition of the atmosphere changed dramatically, leading to the emergence of new forms of life.

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The energy change that would accompany the loss of 0.1 mg in mass would be 3 x 107 kJ according to option C. This is based on the equation E=mc^2, where E represents energy, m represents mass, and c represents the speed of light. Thus, even a small loss in mass can result in a significant release of energy.
The energy change that would accompany the loss of 0.1 mg in mass can be calculated using Einstein's mass-energy equivalence formula, E=mc^2, where E is energy, m is mass, and c is the speed of light.

In this case, the mass loss is 0.1 mg, which should be converted to kilograms: 0.1 mg = 1e-7 kg. The speed of light, c, is approximately 3 x 10^8 m/s.

E = (1e-7 kg) x (3 x 10^8 m/s)^2
E = 9 x 10^6 J

Therefore, the energy change would be 9 x 10^6 J, which corresponds to option E.

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Answer:

KCl is the answers for the question

Explanation:

please give me brainlest

Answer:

KCl

this is the answer hope its helps you I tried my best to give you the best answer ;)

Answer:

A) 0.4 km/hr

Explanation:

To find the average speed of the car, we have to find the slope of the graph.

We start by locating points. From the graph;

Then we use the relationship:

\(m \: = \: \frac{change \: in \: y}{change \: in \: x} \)

Substituting our values;

\(m \: = \frac{(4 \: - \: 0) \: km}{(10 \: - \: 0) \: hr } \\ = 0.4 \frac{km}{hr} \)

Therefore, the average speed of the car is 0.4 km/hr. Hence the best choice is (A).