is oxygen a metal? yes or no answer

Answer:

survival

Explanation:

Organisms actually compete for food , water and slot but all this things lead to survival . so organisms are actually competing for survival

Answer:

KBr is limiting reactant.

Explanation:

Given data:

Mass of  KBr =4g

Mass of Cl₂ = 6 g

Limiting reactant = ?

Solution:

Chemical equation:

2KBr + Cl₂      →    2KCl + Br₂

Number of moles of KBr:

Number of moles = mass/molar mass

Number of moles = 4 g/ 119 gmol

Number of moles = 0.03 mol

Number of moles of Cl₂:

Number of moles = mass/molar mass

Number of moles = 6 g/ 70 gmol

Number of moles = 0.09 mol

Now we will compare the moles of reactant with product.

              KBr            :            KCl

                2              :              2

            0.03            :            0.03

             KBr            :              Br₂

                2             :               1

             0.03           :          1/2×0.03= 0.015

               Cl₂             :            KCl

                 1              :              2

            0.09            :           2/1×0.09 = 0.18

               Cl₂             :              Br₂

                1              :               1

             0.09           :            0.09

Less number of moles of product are formed by the KBr thus it will act as limiting reactant while Cl₂  is present in excess.

Answer:

neutral atoms

Explanation:

We have that the bond angles that are closest to the actual values for the h-n-c and o-c-o bond angles are

Generally, In H-N-C bond nitrogen has Sp3 hybridization, it will have the angle 109.5 degrees.

In O-C-O bond C atom has sp^2 Hybridization so it will have the angle by 120 degrees.

Therefore,bond angles that are closest to the actual values for the h-n-c and o-c-o bond angles are

For more information on Bonding visit

https://brainly.com/question/819068

In the titration of acetic acid and NaOH, the use of the color indicator mandates that excess base be present to detect the reaction endpoint. This cause the calculated and reported molarity of acetic acid in vinegar to be slightly higher

Titration is the process of the reaction between acids and bases in which a reaction is carried out under controlled conditions. One of the reactant titrants is added to an analyte. The concentration of the analyte is determined by the concentration of the titrant.

The equivalence point is the point at which equivalent quantities of reactants have been mixed. For an acid-base reaction, the equivalence point is where the moles of acid and the moles of the base would neutralize each other. At the equivalence point,  the number of H⁺ ions is equal to the number s OH⁻ ions and is done visually with an indicator that changes the color at the equivalent point and it shows that titration has been accomplished, resulting in a slightly higher calculated molarity of acetic acid and a higher reported volume percent of acetic acid.

To read more about Titration visit:

brainly.com/question/28872480

#SPJ4

Answer:

Here's what I get  

Explanation:

(i) Voltaic cell

A voltaic cell is a device that uses a chemical reaction to produce electrical energy.

(ii) Overall Cell Potential

The standard reduction potentials for the half-reactions are

                               ℰ°/V

Cu²⁺ + 2e⁻ ⇌ Cu    0.34

Zn²⁺ + 2e⁻ ⇌ Zn   -0.76

The half-reaction with the more positive potential is the reduction half-reaction. It is the reaction that occurs at the cathode.

The half-reaction with the more negative potential is the oxidation half-reaction. It is the  reaction that occurs at the anode.

We reverse that half-reaction and subtract the voltages to get the cell reaction.

                                                          ℰ°/V

Cathode:  Cu²⁺ + 2e⁻ ⇌ Cu              0.34

Anode:     Zn ⇌ Zn²⁺ + 2e⁻              -0.76

Cell:          Zn +  Cu²⁺ ⇌ Zn²⁺ + Cu    1.10

\(\mathcal{E}_{\text{cell}}^{\circ} = \mathcal{E}_{\text{cat}}^{\circ} - \mathcal{E}_{\text{an}}^{\circ} = \text{0.34 V} - \text{(-0.76 V)} = \text{0.34 V} + \text{0.76 V} = \textbf{1.10 V}\)

(iii) Diagram

The specific labels will depend on your textbook.

They are often as follows.

a. Electron flow

b. Voltmeter or lightbulb

c. Electron flow

d. Cathode or Cu

e. Cu²⁺(aq) and NO₃⁻(aq)

f. Salt bridge

g. Zn²⁺(aq) and NO₃⁻(aq)

h. Anode or Zn

The salt bridge enables ions to flow in the internal circuit and to maintain electrical neutrality in the two compartments.

It often consists of a saturated solution of KCl.

As Zn²⁺ ions form in the anode compartment, Cl⁻ ions move in to provide partners for them.

As Cu²⁺ ions are removed from the cathode compartment, K⁺ ions move in to replace them.

Answer:a. Electron flow

b. Voltmeter or lightbulb

c. Electron flow

d. Cathode or Cu

e. Cu²⁺(aq) and NO₃⁻(aq)

f. Salt bridge

g. Zn²⁺(aq) and NO₃⁻(aq)

h. Anode or Zn

Explanation:

While visiting his uncle's farm, Derek learned that horses and donkeys are two different species. Based on this information, Derek can infer that horses and donkeys are members of different populations.


Since horses and donkeys are different species, they belong to different populations. A population refers to a group of individuals of the same species that live in the same area and can interbreed. While horses and donkeys can mate, their offspring, known as mules, are usually infertile.

This means that mules cannot produce offspring of their own, which indicates that horses and donkeys are not members of the same population. In contrast, if they were members of the same population, they would be able to produce fertile offspring. Therefore, Derek can infer that horses and donkeys are members of different populations.

Learn more about mules here:

https://brainly.com/question/15852289

#SPJ11

the particles do not dissolve completely..

The number of oxygen atoms in each formula unit of lead nitrite is equal to four.

A formula unit can be used to represent the lowest whole number ratio of ions in an ionic compound. The formula mass of an ionic compound is equal to the sum of the atomic masses of the ions in the formula unit.

A formula unit can be described as an empirical formula of any covalent or ionic compound that can be used as an independent entity for stoichiometric calculations.

Given the chemical formula of the Lead(II) nitrite is Pb(NO₂)₂. The number of oxygen atoms in each formula unit is four.

Learn more about formula unit, here:

brainly.com/question/15971114

#SPJ1

The initial momentum of the boy is 0 kgm/s the right option is A. 0 kgm/s.

Momentum can be defined as the product of mass and velocity. The S.I unit of momentum is kgm/s.

The initial momentum of the boy can be calculated using the formula below.

Formula:

Where:

From the question,

Given:

Substitute these values into equation 1

Hence, The initial momentum of the boy is 0 kgm/s the right option is A. 0 kgm/s.
Learn more about momentum here: https://brainly.com/question/7538238

Answer:

exothermic

Explanation:

exothermic reactions give off heat.....or the temp of the substances increases

Answer:

Explanation:d

According to the claim, one benefit of food processing is its capacity to lessen the growth of dangerous germs, which in turn prolongs the shelf life of food.

Thus, Extended Shelf Life: Perishable goods can have their shelf lives extended by using food processing procedures like canning, freezing, or adding preservatives. Customers may now preserve and enjoy these items for longer periods of time without worrying about them going bad.

Improved Food Safety: Food processing aids in lowering the risk of foodborne illnesses by employing chemicals and processing techniques that stop the growth of dangerous germs.

Thus, According to the claim, one benefit of food processing is its capacity to lessen the growth of dangerous germs, which in turn prolongs the shelf life of food.

Learn more about Food, refer to the link:

https://brainly.com/question/32109606

#SPJ12

Answer:

85g

Explanation:

To convert the moles of a substance to grams we need to know the molar mass of the substance. We, as first, must obtain the molar mass of (NH₄)₂S as follows:

There are 2 atoms of N, 8 of H and 1 of S:

N = 2*14g/mol = 28g/mol

H = 8*1g/mol = 8g/mol

S = 1*32g/mol = 32g/mol

Molar mass: 68g/mol

That means 1 mole of (NH₄)₂S has a mass of 68g.

1.25moles have a mass of:

1.25moles * (68g/mol) =

D) There is more NaCl at the start of the ascending limb that decreases as the filtrate moves up the limb.

Filtrate is a liquid that has been passed through a filter or other filtration device. This process is used to separate the solid particles from the liquid, leaving a purified liquid behind.

Explanation: The concentration gradient of NaCl in the medulla is due to the movement of NaCl from the descending limb of the loop of Henle into the ascending limb. As the filtrate moves up the ascending limb, NaCl is actively transported out of the filtrate and into the interstitium of the medulla, thus leading to a decrease in the concentration of NaCl in the filtrate as it moves up the loop. This creates a concentration gradient of NaCl, with higher concentrations near the start of the ascending limb and lower concentrations as the filtrate moves up the loop.

To learn more about filtrate
https://brainly.com/question/29482967
#SPJ1

Answer:

As a scientist employed by a manufacturer of cookware, I would recommend using alumina (Al2O3) as the material for a ceramic baking dish.

Answer:

4.08 L

Explanation:

At standard temperature and pressure, a mole of any gas equals 22.4 L.

We have 0.182 mol of CO₂ gas. We know that every mole of gas is 22.4 L, so

\(0.182mol*\frac{22.4L}{1mol} =4.08L\)

⇒ 4.08 L of CO₂ is the answer

SI Unit: Volume = 4.133 L of carbon dioxide

Non-SI Unit: Volume = 4.079 L carbon dioxide

At STP conditions (Standard Temperature and Pressure), which is conditions at 100 kPa and at 0°C or 273.15 K, it is a given that the volume of  1 mole of ideal gas is 22.71 L.

\(\large \textsf{$\therefore$ if 1 mol of CO$_2$ = 22.71 L}\\\\\large \textsf{hence, 0.182 $\times$ 1 mol of CO$_2$ = 22.71 $\times$ 0.182}\\\\\large \textsf{$\implies$ \boxed{\boxed{$volume = 4.133 L of CO$_2}}}\)

Note: The value used for pressure above, 100 kPa (kilopascals), is a standard SI unit (International System of Units), used by most countries around the world.

However, another commonly used value for pressure (though not the preferred SI unit), is 1 atm (atmospheric pressure), which is equivalent to 101.325 kPa.

Using this value, the volume of 1 mole of ideal gas at STP is then 22.41 L. Solving this:

\(\large \textsf{if 1 mol of CO$_2$ = 22.41 L}\\\\\large \textsf{$\therefore$ 0.182 $\times$ 1 mol of CO$_2$ = 22.41 $\times$ 0.182}\\\\\large \textsf{$\implies$ \boxed{\boxed{$volume = 4.079 L CO$_2}}}\)

To learn more about Standard Temperature and Pressure Conditions:

https://brainly.com/question/2783971

Answer:

The given equation shows the decomposition of hydrated sodium sulfate to form anhydrous sodium sulfate:

$Na_2SO_{4 \cdot x} \rightarrow Na_2SO_4 + xH_2O$

From the given data, we know that 10.10 g of hydrated sodium sulfate decomposes to form 4.40 g of anhydrous sodium sulfate. Let's first calculate the number of moles of anhydrous sodium sulfate formed:

$Moles\ of\ Na_2SO_4\ =\ \frac{4.40\ g}{142.04\ g/mol} = 0.0310\ mol$

Since one mole of hydrated sodium sulfate produces one mole of anhydrous sodium sulfate, the number of moles of hydrated sodium sulfate present in 10.10 g can be calculated as:

$Moles\ of\ Na_2SO_{4 \cdot x}\ =\ 0.0310\ mol$

The formula mass of the hydrated sodium sulfate can be calculated by adding the molar masses of all its constituent atoms:

$Formula\ mass\ of\ Na_2SO_{4 \cdot x}\ =\ 2\times23.00\ g/mol\ +\ 32.06\ g/mol\ +\ x\times18.02\ g/mol = 142.04\ g/mol$

Solving for x, we get:

$x = \frac{142.04\ g/mol - 46.00\ g/mol - 32.06\ g/mol}{18.02\ g/mol} = 4$

Therefore, the formula of the hydrated sodium sulfate is $Na_2SO_{4 \cdot 4H_2O}$ and its formula mass is 322.20 g/mol.

Molecule A should have a higher melting point than Molecule B because it has more opportunities for intermolecular forces to occur due to its larger surface area and ability to participate in Van der Waals forces in addition to hydrogen bonding.

Both molecules have hydroxyl (-OH) groups, which are polar and capable of hydrogen bonding. However, the rest of the structures of the molecules are different. Molecule A has a long carbon chain, which means it has more surface area and more opportunities for Van der Waals forces to occur. Van der Waals forces are weaker than hydrogen bonding, but they can still contribute to the overall strength of the intermolecular forces.

Molecule B, on the other hand, has a cyclic structure, which means it has less surface area than Molecule A. In summary, the melting point of a molecule is dependent on the intermolecular forces between its molecules. In this case, Molecule A has a higher melting point than Molecule B due to its larger surface area and greater potential for intermolecular forces to occur.

To know more about Molecule visit:-

https://brainly.com/question/19922822

#SPJ11

Answer:

Most of the matter around us, however, consists of mixtures of pure substances. Air, wood, rocks and dirt are examples of such mixtures. Mixtures can be further classified as Homogeneous and Heterogeneous.

Answer:

See the answer below

Explanation:

When silver is added to dilute sulphuric acid, no reaction would occur. However, silver reacts with hot and concentrated sulphuric acid to produce silver sulphate, sulphur dioxide, and water.

The equation of the reaction is as below:

silver + sulphuric acid --> silver sulphate + water + sulphur dioxide

\(2Ag(s) + 2 H_2SO_4(aq) -->Ag_2SO_4 (s) + 2 H_2O (l) + SO_2 (aq)\)

The property of matter that is an extensive Rather an intensive, property of matter is option A which is mass Because mass refer to substance that does not have a particular shape and can exist in different particles.

Matter can be define as any substance or particles that have weight or mass and also occupy space. Matter exist in different forms which are liquid, solid and gaseous forms.

There are different property of matter which include, mass, density, melting point, boiling point , luster, shape, color and so on.

Matter can be transformer from one form to another.

Therefore, The property of matter that is an extensive Rather an intensive, property of matter is option A which is mass because mass refer to substance that does not have a particular shape and can exist in different particles.

Learn more about matter below.

https://brainly.com/question/12785175

#SPJ1

The pressure when the helium balloon is airborne at a volume of 120 m³ and a temperature of -60°C is approximately 0.726 atm.

To solve this problem, we can use the ideal gas law, which states that:

PV = nRT

P is the pressure

V is the volume

n is the number of moles of gas

R is the ideal gas constant (8.314 J/(mol·K))

T is the temperature in Kelvin

First, let's convert the initial and final temperatures from Celsius to Kelvin:

Initial temperature (T1) = 20°C + 273.15 = 293.15 K

Final temperature (T2) = -60°C + 273.15 = 213.15 K

Next, we can set up two equations using the ideal gas law for the initial and final states:

P1 * V1 = n * R * T1

P2 * V2 = n * R * T2

Since the number of moles (n) and the gas constant (R) are constant, we can write:

P1 * V1 / T1 = P2 * V2 / T2

Now we can plug in the given values:

P1 * 3.0 m³ / 293.15 K = P2 * 120 m³ / 213.15 K

Simplifying the equation:

P1 / 293.15 = P2 / 213.15

Now we can solve for P2:

P2 = P1 * 213.15 / 293.15

Finally, we can substitute the initial pressure (P1) with the given value of 1 atm:

P2 = (1 atm) * 213.15 / 293.15

P2 ≈ 0.726 atm

To know more about pressure refer to-

https://brainly.com/question/30673967

#SPJ11

Answer:

V2 = 3.39

Explanation:

V1/T1 = V2/T2

V1 = 6.80L

T1 = 325C (must be convert to K by + 273.15) = 598.15 K

T2 = 25C = 298.15 K

V2 =?

T2xV1/T1 = V2

298.15 x 6.80/ 598.15 = V2

3.39 = V2

So 3.39 is the answer!

The maximum amount of carbon dioxide that can be formed from 15.2 g of glucose is approximately 22.31 grams.

To determine the maximum amount of carbon dioxide (CO2) that can be formed from 15.2 g of glucose (C6H12O6), we need to use the stoichiometry of the balanced chemical equation for the combustion of glucose.

The balanced chemical equation for the combustion of glucose is:
C6H12O6 + 6O2 -> 6CO2 + 6H2O

From the equation, we can see that 1 mole of glucose reacts with 6 moles of oxygen to produce 6 moles of carbon dioxide.

First, we need to calculate the number of moles of glucose in 15.2 g:
Molar mass of glucose (C6H12O6) = (12.01 g/mol x 6) + (1.01 g/mol x 12) + (16.00 g/mol x 6) = 180.18 g/mol
Moles of glucose = Mass of glucose / Molar mass of glucose = 15.2 g / 180.18 g/mol ≈ 0.0845 mol

Since 1 mole of glucose reacts with 6 moles of oxygen, we need to multiply the number of moles of glucose by 6 to determine the moles of oxygen:
Moles of oxygen = 0.0845 mol x 6 = 0.507 mol

Finally, since 1 mole of glucose produces 6 moles of carbon dioxide, we can calculate the maximum amount of carbon dioxide formed:
Moles of carbon dioxide = Moles of glucose x 6 = 0.0845 mol x 6 = 0.507 mol

To convert the moles of carbon dioxide to grams, we can multiply by the molar mass of carbon dioxide:
Molar mass of carbon dioxide (CO2) = (12.01 g/mol x 1) + (16.00 g/mol x 2) = 44.01 g/mol
Mass of carbon dioxide = Moles of carbon dioxide x Molar mass of carbon dioxide = 0.507 mol x 44.01 g/mol ≈ 22.31 g

Therefore, the maximum amount of carbon dioxide that can be formed from 15.2 g of glucose is approximately 22.31 grams.

Know more about carbon dioxide:

https://brainly.com/question/3049557

#SPJ11