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Answer:

The volume will be 30759mL

Explanation:

To solve this question we need to use the combined gas law:

P₁V₁/T₁ = P₂V₂/T₂

Where P is pressure, V is volume and T is absolute temperature of 1, initial state and 2, final state of the gas

Computing the values (STP are 1atm and 273.15K):4

P₁ = 1atm

V = 6500mL

T₁ = 273.15K

P₂ = 0.25atm

V₂ = ?

T₂ = 273.15K + 50°C = 323.15K

1atm*6500mL/273.15K = 0.25atmV₂/323.15K

V₂ = 30759mL

Answer:

based on what you know about prokaryotic cells and eukaryotic cells the bacterial cell shown in the venn diagram below is a prokaryotic cell while the fungal cell is a eukaryotic

Explanation:

hope it help and if it doesnt sorry ;)

Answer: 18

Explanation:

i think  so

Answer:

The answer is option OB.

Answer: B) carbon + oxygen - carbon dioxide

Explanation: The symmetry of a carbon dioxide molecule is linear and centrosymmetric at its equilibrium geometry. The length of the carbon-oxygen bond in carbon dioxide is 116.3 pm, noticeably shorter than the roughly 140-pm length of a typical single C–O bond, and shorter than most other C–O multiply-bonded functional groups such as carbonyls. Since it is centrosymmetric, the molecule has no electric dipole moment. As a linear triatomic molecule, CO2 has four vibrational modes as shown in the diagram. In the symmetric and the antisymmetric stretching modes, the atoms move along the axis of the molecule. There are two bending modes, which are degenerate, meaning that they have the same frequency and same energy, because of the symmetry of the molecule. When a molecule touches a surface or touches another molecule, the two bending modes can differ in frequency because the interaction is different for the two modes. Some of the vibrational modes are observed in the infrared (IR) spectrum: the antisymmetric stretching mode at wavenumber 2349 cm−1 (wavelength 4.25 μm) and the degenerate pair of bending modes at 667 cm−1 (wavelength 15 μm). The symmetric stretching mode does not create an electric dipole so is not observed in IR spectroscopy, but it is detected in by Raman spectroscopy at 1388 cm−1 (wavelength 7.2 μm).

Answer:

Molarity = 1.57 M

Explanation:

Given data:

Volume of solution = 350 mL (350 mL × 1L /1000 ml = 0.35 L)

Mass of NaCl = 32.0 g

Molarity of solution = ?

Solution:

Number of moles of solute:

Number of moles = mass/molar mas

Number of moles = 32.0 g/ 58.44 g/mol

Number of moles = 0.55 mol

Molarity:

Molarity = number of moles / volume in L

Molarity = 0.55 mol / 0.35 mL

Molarity = 1.57 mol/L

Molarity = 1.57 M

Answer:

See explanation

Explanation:

Temperature has been severally defined as the measure of the average kinetic energy of the molecules of a body. Heat is a form of energy that exists due to temperature difference.

Given a body whose molecules has a speed = (3RT/M)^1/2; this implies that for a given mass of the substance, the velocity of its particles depends on the temperature of the substance.

However, absorption of heat increases the temperature of the body. Therefore, when heat is absorbed, the temperature increases and the speed of the particles of a substance increases according to the relation above.

Answer:

The answer is either A or C figure it out sorry

The answer is A) Something that can be observed or measured while changing the identity of the substance. C) Something that can be observed or measured without changing the identity of the substance.

A physical asset is a function of count that isn't associated with a change in its chemical composition. Familiar examples of bodily homes consist of density, coloration, hardness, melting and boiling factors, and electric conductivity.

Physical homes are those popular properties you word maximum readily approximately a substance, including its length, state of being counted (stable, liquid, or gas), color, mass, density, and power. Values for physical residences can be determined via tests that do not modify the substance being tested.

The definition of bodily is matters which are of nature or of the frame. An example of physical is plantlife developing in the ground. An example of physical is a person constrained to a wheelchair because of disabilities. A bodily exam.

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Answer:

good luck

Explanation:

1. false                                                                                                                          2. True                                                                                                                                3.False                                                                                        

4.true      

5.true

Answer:

1.False

2.False

3.True

4.True

5.True

Answer:

3CuCl₂   +    2Na₃PO₄  →   Cu₃(PO₄)₂   +  6NaCl

Explanation:

The reaction expression is given as:

   CuCl₂   +    Na₃PO₄  →   Cu₃(PO₄)₂   +  NaCl

To balance this expression, let us assign coefficients a, b, c and d;

     aCuCl₂   +    bNa₃PO₄  →   cCu₃(PO₄)₂   +  dNaCl

Conserving Cu: a  = 3c

                    Cl:  2a = d

                    Na:  3b = d

                     P:   b  = 2c

                    O:  4b  = 8c

let as  c = 1, a  = 3, d  = 6 , b  = 2

        3CuCl₂   +    2Na₃PO₄  →   Cu₃(PO₄)₂   +  6NaCl

Answer:

they will eat a lot of fish and make other animals go hungry

Explanation:

logic

As the population of large predator fish has grown out of control it will require more supply food due to which population of small fishes will decrease leading to disturbance in ecosystem.

Ecosystem is defined as a system which consists of all living organisms and the physical components with which the living beings interact. The abiotic and biotic components are linked to each other through nutrient cycles and flow of energy.

Energy enters the system through the process of photosynthesis .Animals play an important role in transfer of energy as they feed on each other.As a result of this transfer of matter and energy takes place through the system .Living organisms also influence the quantity of biomass present.By decomposition of dead plants and animals by microbes nutrients are released back in to the soil.

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Answer:

D or A your choice

Explanation:

uhhh didnt u- nvm

A neutralization reaction is when an acid and a base react to form water and a salt and involves the combination of H+ ions and OH- ions to generate wate

Answer: option  d

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Atoms Molecules mixtures

Answer: true

Explanation: For about 2000 years, people accepted Aristotle's idea that all matter is made up of just four elements: earth, air, water, and fire. Starting about 500 years ago, scientists began discovering all of the elements that are known today

Answer:

B. it breaks when pressure is applied.

Answer:

Explanation:

First, calculate the molar mass of NH4SO2. The molar mass can determine the number of moles. Then use Avogadro's number to calculate the number of molecules.

Key Steps:

Step 1. Calculate the molar mass of your compound

Step 2. Divide 2.3 grams by the molar mass of NH4SO2, this gives us moles

Step 3. Multiply by Avogadro's number (6.02x10^23) this gives you molecules.

Mole measure the number of elementary entities of a given substance that are present in a given sample. Therefore, 1.68×10²²molecules are there in 2.3 grams of (NH[tex]_4[/tex])[tex]_2[/tex]SO[tex]_4[/tex].

The SI unit of amount of substance in chemistry is mole. The mole is used to measure the quantity of amount of substance. It measure the number of elementary entities of a given substance that are present in a given sample. There are so many formula for calculating mole. we know one mole of any element contains 6.022×10²³ atoms which is also called Avogadro number.

moles of (NH[tex]_4[/tex])[tex]_2[/tex]SO[tex]_4[/tex]= 2.3 grams ÷82.10g/mol

                                =0.028moles

number of atoms/molecules=number of moles × 6.022×10²³(Avogadro number)

number of atoms/molecules of (NH[tex]_4[/tex])[tex]_2[/tex]SO[tex]_4[/tex]=0.028 × 6.022×10²³

                                                                     =1.68×10²²molecules

Therefore, 1.68×10²²molecules are there in 2.3 grams of (NH[tex]_4[/tex])[tex]_2[/tex]SO[tex]_4[/tex].

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Explanation:

It will have to change its form in order for the cell to focus on developing and retaining a viable, in order to be large and narrow as in the situation of the nerve cells or to build a more 'contoured' surface, that is, to establish microvillus.

Answer:

True hope this helps

Explanation:

Answer:

109.3 × 10⁵ mol

Explanation:

Given data:

Number of moles of phosphoric acid = ?

Number of formula units = 658 × 10²⁸

Solution:

The given problem will solve by using Avogadro number.

The number 6.022 × 10²³ is called Avogadro number.

1 mole contain 6.022 × 10²³ formula units,

658 × 10²⁸ formula units × 1 mol / 6.022 × 10²³ formula units

109.3 × 10⁵ mol

Answer:

B. 2

Explanation:

A double covalent bond is where two pairs of electrons are shared between the atoms rather than just one pair

B

A Double bond is when two atoms share two pairs of electrons with each other. It is depicted by two horizontal lines between two atoms in a molecule

Answer: Acidity and basicity, proton concentration, the pH scale. You may have noticed that acidic things tend to taste sour, or that some basic. Since the scale is based on pH values, it is logarithmic, meaning that a change of 1 pH unit .

Explanation: PLEASE MARK ME AS BRAINLIEST

Answer:

the size, shape and orientation of mineral grains

Explanation:

To describe a rock's texture, geologists determine the size, shape and orientation of mineral grains.

Texture deals with the relationship between minerals within a fine mass.

Answer:

The speed should be 7.5

Explanation:

wavespeed (c) = frequency (ƒ) x wavelength (λ)

Answer:

Check explanation for answer

Explanation:

Let's analyze each reaction per separate and explain the reason of the type of reaction:

a) CH₃CH₂CH₃ + 5O₂ -------> 3CO₂ + 4H₂O

Type of reaction: Combustion

In this case, the combustion is a reaction where a compound reacts with a molecule of oxygen to produce, in almost every case, CO₂ and H₂O. Therefore, this reaction can only be a combustion. It cannot be combination because combination requires two compounds to be combined and formed, in most of the cases, one product. In this case we have two. It can be similar to a double displacement but not combination.

b) KOH + HClO₄ --------> KClO₄ + H₂O

Type of reaction: Acid base reaction, double displacement.

This is clearly an acid base reaction cause we have an acid (HClO₄) reacting with a base (KOH) to produce a salt and water. It's also a double displacement reaction, because as you can see, the atom of Potassium (K) is displacing the H, and the H displaces the K simultaneously, and form two new products.

c) CH₃CH₂OH + 3O₂ -------> 2CO₂ + 3H₂O

Type of reaction: Combustion

The reason, the same for case a).

d) CuSO₄ + ZnCrO₄ ---------> CuCrO₄ + ZnSO₄

Type of reaction: Double displacement and precipitation

In this case, it's pretty similar to case b), The Cu replaces the Zn in the CrO₄, while the Zn replaces the Cu with the SO₄. But it's also a precipitation because the CuCrO₄ that was formed is in solid state, and if the reactants were in aqueous state and a solid was formed, this means that this solid is precipitating from the reaction. Therefore, it's a precipitation reaction too.

Hope this helps

Answer:

Different types of rocks have different chemical composition.

Explanation:

Rock can be distinguished from each other by their chemical composition which is a product of the minerals they contain.