What tool would you use to test for hardness?

Answer:

Germanium or Ge

Explanation:

It is on the perioidic table. Gallium has an atomic number of 31 and Germanium has an atomic number of 32.

INFORMATION:

We have the next molecular compound

And we must name it

STEP BY STEP EXPLANATION:

To name binary (two-element) molecular compounds, we must know the following information:

The first element in the formula is simply listed using the name of the element. The second element is named by taking the stem of the element name and adding the suffix -ide.

We can use the following table to specify the number of atoms in a molecule using a prefix

In our case,

the first element is Si: silicon and it has 3 atoms, so the first word of the name of the compound would be trisilicon.

the second element is N: nitrogen and it has 4 atoms, so the second word of the name of the compound using the suffix -ide would be tetranitride.

Finally, the name of the molecular compound is trisilicon tetranitride

ANSWER:

The name of the molecular compound Si3N4 is trisilicon tetranitride

Answer:

size and shape because solids nomally have a fixed shape and volume

I think it would be, C. Size and Shape.

Because, when measuring objects in solids u should measure the Size because the color is just paint and the texture is just how it feels. The shape can be measured in solids too.

So, your answer is C.

Good job if you made it this far!

Your reward?

I'll befriend you!

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Answer:

the cation comes first I believe

Explanation:Let me know if I'm wrong pls

Answer:

A options hydrogen

Explanation:

valence outermost element is hydrogen.

A) F2 and C2H5OH (Heterogeneous mixture)B) H2O and CH3OH (Homogeneous mixture)C) LiCl and C10H20 (Heterogeneous mixture)D) CH4 and C2H5OH (Heterogeneous mixture).

The pair of substances that are most likely to form a homogeneous solution is B. H2O and CH3OH. A homogeneous mixture is one in which the components are evenly distributed throughout the mixture. These types of solutions have uniform properties and the same composition throughout.A heterogeneous mixture is one in which the components are not evenly distributed. This means that the mixture has distinct regions or phases that are visibly different from one another. The following are the most likely pairs of substances to form a homogeneous solution:A) F2 and C2H5OH (Heterogeneous mixture)B) H2O and CH3OH (Homogeneous mixture)C) LiCl and C10H20 (Heterogeneous mixture)D) CH4 and C2H5OH (Heterogeneous mixture).

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The ion with 4 protons and 2 electrons is called a helium ion. A helium ion is an ion that contains two protons, two electrons, and no neutrons. The atomic number of helium is 2, indicating that it has two protons.

Helium is a colorless, odorless, tasteless, non-toxic, and inert gas that heads the noble gas series in the periodic table.The helium ion is an ion that has lost its two electrons and is, therefore, positively charged. The ionization of helium atom creates the helium ion. Helium ion is used in ion beam lithography, vacuum leak detection, and scanning helium microscopy because it has a relatively large atomic mass, a low reactivity, and a high mobility. In summary, the ion with 4 protons and 2 electrons is called a helium ion.

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132 kg of Fe2O3 would produce 132 kg of iron in the reaction.

To determine the mass of iron formed from 132 kg of Fe2O3, we need to calculate the molar masses of Fe2O3 and Fe and then use stoichiometry to find the corresponding mass of iron.

The molar mass of Fe2O3 (iron(III) oxide) is:

2(Fe) + 3(O) = 2(55.85 g/mol) + 3(16.00 g/mol) = 159.69 g/mol

Now we can set up the stoichiometric ratio between Fe2O3 and Fe:

2 mol Fe2O3 : 2 mol Fe

The molar mass of Fe (iron) is:

Fe = 55.85 g/mol

Using the molar masses and the stoichiometric ratio, we can calculate the mass of iron formed:

132 kg Fe2O3 * (1,000 g / 1 kg) * (2 mol Fe / 2 mol Fe2O3) * (55.85 g / 1 mol Fe) = 132,000 g = 132 kg

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Answer

153

Explanation:

51/120 = x/360

51(360) = 120x

18360 = 120x

18360/120x = 120x/120x

153 = x

Answer:

153

Explanation:

The formula of Potassium tris(oxalate)chromate(III) is K₃ [Cr (ox)₃] and Tris(ethylenediamine) cobalt(III)- [Co (en)₃]³⁺ [Mn (CN)₅]³⁻ and the formula of Diamminediaquabromochloroaluminum nitrate is [Al (NH₃)₂(H₂O)₂ Br Cl] NO₃⁻.

Coordination compounds are formed by the coordination bond of metals with ligands which can be neutral or anionic. The coordination compounds have a coordination sphere in which the metal with bonded ligands are written in a square bracket.  

They  may have another ligand or metal outside the sphere which are written outside a square bracket. Here the first complex is Potassium tris(oxalate)chromate(III), where the K metal is outside the sphere and the ligand is oxalate which is a bidentate ligand with 2- charge. The formula of the compound is  K₃ [Cr (ox)₃].

The second complex is Tris(ethylenediamine) cobalt(III) pentacyanoiodomanganate(II) which is an ionic pair of complexes. One anionic part and the cationic part and the formula is  [Co (en)₃]³⁺ [Mn (CN)₅]³⁻ .

The last one is Diamminediaquabromochloroaluminum nitrate, where nitrate ion is outside the coordination sphere and the formula is [Al (NH₃)₂(H₂O)₂ Br Cl] NO₃⁻.

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Answer:

2,400,000 torr (3 s.f.)

Explanation:

Convert the pressure from Pascal to atm first:

\(\boxed{1 \: atm = 101325 \:Pa }\)

3.20 ×10⁸ Pa

= [(3.20 ×10⁸) ÷101325] atm

= 3158.2 atm (5 s.f.)

Convert atm to torr:

\(\boxed{1 \: atm = 760 \: torr}\)

3158.2 atm

= (3158.2 ×760) torr

= 2400000 torr (3 s.f.)

The answer to your question is 2

Explanation:

just trying...hope that helps

Answer:

See explanation below

Explanation:

Sodium will react with chlorine to form sodium chloride NaCl.

Na is a group I metal with 1 valance electron to become one Na+ ion to bond with one Cl- ion

Magnesium will also react with chlorine to form magnesium chloride MgCl2

Mg is a group II metal with 2 valence electrons become one Mg2+ ion to bond with two Cl- ions.

Both Na and Mg are metals while Cl is non-metals so the bond between metal and non-metal is ionic bond.

Hope this helps.

Answer:

c. .....................

Answer: the amount of carbon dioxide put into the atmosphere due to your consumption of fossil fuels

Your carbon footprint is the amount of carbon dioxide and other carbon compounds emitted, because of your use of fossil fuels.

Hope this helps!

Answer:

B) Poor conductors

Explanation:

According to the characteristics of non-metals , non-metals are poor conductors of electricity and are mostly gases at room temperature and are also brittle.

An element is the simplest form of matter.Elements are further classified as metal,non -metals and metalloids. Non-metals  do not possess luster and are dull . They are not malleable and ductile and are soft due to the covalent bonding present in them . Non-metals  owing to their soft nature have low melting points.

As they have large intermolecular spaces they are mostly gases at room temperature and are also brittle due to the presence of weak bonding present in them.They  are poor conductors as they do not have mobile electrons.They have low tensile strength due to presence of covalent bonding.

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1. Fluid compressibility (C): Fluid compressibility refers to the measure of how much a fluid's volume changes in response to a change in pressure.

2. Solution-gas/liquid ratio (SGLR): The solution-gas/liquid ratio represents the volume of gas dissolved in a given volume of liquid at a specific pressure and temperature.

3. Fluid formation volume factor (FVF): The fluid formation volume factor represents the ratio of the volume of a fluid at reservoir conditions (pressure and temperature) to its volume at surface conditions.

4. Fluid densities (ρ): Fluid densities refer to the mass per unit volume of a fluid.

5. Fluid viscosities (μ): Fluid viscosities represent the measure of a fluid's resistance to flow.

1.  Equation: C = -1/V * dV/dP

  Symbol: C

  Unit: 1/Pascal (Pa^-1)

  Correlation: The compressibility of fluids can vary depending on the fluid type. For ideal gases, the compressibility is inversely proportional to pressure.

2.Equation: SGLR = V_gas / V_liquid

  Symbol: SGLR

  Unit: Volumetric ratio (e.g., scf/bbl)

  Correlation: The solution-gas/liquid ratio is influenced by the pressure and temperature conditions, as well as the composition of the fluid.

3. Equation: FVF = V_reservoir / V_surface

  Symbol: FVF

  Unit: Volumetric ratio (e.g., bbl/STB)

  Correlation: The fluid formation volume factor depends on the composition and properties of the fluid, as well as the reservoir conditions.

4. Equation: ρ = m / V

  Symbol: ρ

  Unit: Mass per unit volume (e.g., kg/m^3)

  Correlation: Fluid densities can vary depending on the type and composition of the fluid. For example, water has a density of approximately 1000 kg/m^3.

5. Equation: No single equation; viscosity is measured experimentally using viscometers.

  Symbol: μ

  Unit: Pascal-second (Pa·s) or centipoise (cP)

  Correlation: The viscosity of a fluid is influenced by temperature and pressure. Different fluids exhibit different viscosities, ranging from low-viscosity fluids like water to high-viscosity fluids like heavy oil.

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The substance in the image above would be classified as a mixture of elements (option E).

A compound is a substance formed by chemical bonding of two or more elements in definite proportions by weight.

On the other hand, a mixture is made when two or more substances are combined, but they are not combined chemically.

According to this question, an image is shown with two different substances or elements as distinguished by coloration (white and purple). These elements are combined but not chemically bonded, hence, is a mixture.

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Answer:

The substances more alkaline than water are;

1) Spit, 2) Blood, 3) Hand Soap, and 4) Drain Cleaner

Explanation:

The diagram in the simulation displays a list of liquid substances, arranged from bottom to top in the order of increasing alkalinity.

The ph of water is 7.0

The ph of spit (saliva) is between 6.2 and 7.6

The ph of blood is about 7.4

The ph of hand soap is between 9 and 10

The ph of drain cleaner is between 12 and 14.

Answer:

A. The birthrate is higher than the death rate

Explanation:

Answer:

Organ Movement Food Particles Broken Down

Stomach Upper muscle in stomach relaxes to let food enter, and lower muscle mixes food with digestive juice Proteins

Small intestine Peristalsis Starches, proteins, and carbohydrates

Pancreas None                    Carbohydrates, fats, and proteins

Liver         None                Fats

Explanation:

B- Mechanical digestion begins in the mouth, and includes the tearing and grinding of food with teeth.

C- Mechanical digestion uses teeth to grind food and saliva to moisten the food

making it easier to chew.

These points are true.

a. The given reaction  is spontaneous under standard conditions.

b.  the reaction is spontaneous under standard conditions.

a. To determine the spontaneity of the reaction Cu + ZnCl2 -> CuCl2 + Zn, we need to calculate the cell potential and the Gibbs free energy change.

The half-reactions for this reaction are:

Cu -> Cu2+ + 2e- (E° = 0.34 V)

Zn2+ + 2e- -> Zn (E° = -0.76 V)

To obtain the overall cell potential, we subtract the reduction potential of the anode (Zn2+ + 2e- -> Zn) from the reduction potential of the cathode (Cu2+ + 2e- -> Cu):

E°cell = E°cathode - E°anode

E°cell = 0.34 V - (-0.76 V)

E°cell = 1.10 V

Since the cell potential is positive, the reaction is spontaneous under standard conditions.

To calculate the Gibbs free energy change, we use the equation:

ΔG° = -nFE°cell

where n is the number of electrons transferred in the reaction and F is the Faraday constant (96485 C/mol). For this reaction, n = 2.

ΔG° = -2 * 96485 C/mol * 1.10 V

ΔG° = -211.87 kJ/mol

Since the Gibbs free energy change is negative, the reaction is spontaneous under standard conditions.

b. To determine the spontaneity of the reaction Fe + ZnCl2 -> FeCl2 + Zn, we need to calculate the cell potential and the Gibbs free energy change.

The half-reactions for this reaction are:

Fe2+ + 2e- -> Fe (E° = -0.44 V)

Zn2+ + 2e- -> Zn (E° = -0.76 V)

To obtain the overall cell potential, we subtract the reduction potential of the anode (Zn2+ + 2e- -> Zn) from the reduction potential of the cathode (Fe2+ + 2e- -> Fe):

E°cell = E°cathode - E°anode

E°cell = (-0.44 V) - (-0.76 V)

E°cell = 0.32 V

Since the cell potential is positive, the reaction is spontaneous under standard conditions.

To calculate the Gibbs free energy change, we use the equation:

ΔG° = -nFE°cell

where n is the number of electrons transferred in the reaction and F is the Faraday constant (96485 C/mol). For this reaction, n = 2.

ΔG° = -2 * 96485 C/mol * 0.32 V

ΔG° = -62.02 kJ/mol

Since the Gibbs free energy change is negative, the reaction is spontaneous under standard conditions.

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Answer:

Large leaves help plants to receive more sunlight when in tropical rainforests.

However, it is important to note that this comparison may not accurately reflect the actual volume difference between the atom and the "b" parameter.

When comparing the volume of an atom to the "b" parameter, it may not be fair to make a direct comparison. This is because when packing a mole of atoms as close as possible, there will be some "in-between" space.

This can make the volume of the "b" parameter appear greater than the volume of the atom.

In the hexagonal close pack structure, the volume taken up by a sphere of radius r can be calculated using the formula vhcp.

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The question is about the comparison of volume between an atom and the 'b' parameter.

The subject of this question is Chemistry. It pertains to the comparison of the volume of an atom to the 'b' parameter. When packing a mole of atoms as close as possible, there is some 'in-between' space, which causes the volume of the 'b' parameter to appear greater than the volume of the atom.

An example of this is the hexagonal close pack structure, where the volume taken up by a sphere of radius r can be calculated using the formula vhcp.

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you need to lose one electron

The reaction between zinc and 100.0 mL of 6.00 M cold, aqueous sulfuric acid will produce 32.2 grams of zinc sulfate.

To determine the amount of zinc sulfate produced, we need to calculate the number of moles of zinc reacted and then use the stoichiometry of the balanced chemical equation to convert moles of zinc to moles of zinc sulfate. Finally, we can calculate the mass of zinc sulfate produced.

The balanced chemical equation between zinc and sulfuric acid is: Zn + H2SO4 -> ZnSO4 + H2. From the balanced equation, we can see that the molar ratio between zinc and zinc sulfate is 1:1.

First, calculate the number of moles of zinc reacted: moles of Zn = volume of H2SO4 × concentration of H2SO4

Since we have 100.0 mL of 6.00 M sulfuric acid: moles of Zn = 0.100 L * 6.00 mol/L = 0.600 mol

Since the molar ratio between zinc and zinc sulfate is 1:1, the number of moles of zinc sulfate produced is also 0.600 mol.

Finally, calculate the mass of zinc sulfate produced: mass of ZnSO4 = moles of ZnSO4 * molar mass of ZnSO4

The molar mass of zinc sulfate (ZnSO4) is: molar mass of ZnSO4 = (1 × atomic mass of Zn) + (1 × atomic mass of S) + (4 × atomic mass of O)

Using the atomic masses from the periodic table, the molar mass of ZnSO4 is approximately 161.4 g/mol: mass of ZnSO4 = 0.600 mol × 161.4 g/mol ≈ 96.8 grams

Therefore, approximately 32.2 grams of zinc sulfate can be produced from the reaction between zinc and 100.0 mL of 6.00 M cold, aqueous sulfuric acid.

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