Is #11 balanced or unbalanced?

Answer:

umm whats the question??

Explanation:

Answer:

A I think

Explanation:

Answer:

I am definitly sure that the answer is C

Explanation:

potential energy is the energy possessed by a body by virtue of its position relative to others, stresses within itself, electric charge, and other factors.

Kidney in our body functions as a sieve in to remove wastes. Ureter, bladder and kidney as well are part of excretory system in animals. Hence, option J.

Human body contains a group of organ systems to perform specific functions. Excretory system is an organ system for the excretion or removal of wastes after digestion form the body.

The main component of excretory system is kidney by which the wastes from the circulatory system is removed through urine. Ureter and bladder are extensions of kidney. After absorption of water and other nutrients remaining uric acid or urine is stored in the bladder to remove.

Kidney contains a number of sieve like structures called nephrons they are the filtering units of kidney.Nephrons are microscopic structural units of kidney by which wastes are filtered to produce urine and remove.

Therefore, all the given organs, kidney, ureter, bladder etc are part of excretory system and they plays a role in removing wastes from the body. Hence, option J is correct.

To find more about kidney, refer the link below:

https://brainly.com/question/3645671

#SPJ6

Answer:

When heat is added to a substance, the molecules and atoms vibrate faster. As atoms vibrate faster, the space between atoms increases. The motion and spacing of the particles determines the state of matter of the substance. The end result of increased molecular motion is that the object expands and takes up more space.

Answer:

Explanation:

When heat is added to a substance, the molecules and atoms vibrate faster. As atoms vibrate faster, the space between atoms increases. The motion and spacing of the particles determines the state of matter of the substance. The end result of increased molecular motion is that the object expands and takes up more space.

Answer:

Incorrect

Explanation:

Sodium has 11 atoms

Answer:

[tex]incorrect......[/tex]

Answer: The mole ratio between Fe and [tex]O_2[/tex] is [tex]\frac{4Fe}{3O_2}[/tex]

Explanation:

According to the law of conservation of mass, mass can neither be created nor be destroyed. Thus the mass of products has to be equal to the mass of reactants. The number of atoms of each element has to be same on reactant and product side. Thus chemical equations are balanced.

The given balanced chemical equation is :

[tex]4Fe+3O_2\rightarrow 2Fe_2O_3[/tex]

Thus 4 moles of iron (Fe) reacts with 3 moles of oxygen gas [tex](O_2)[/tex] to give 2 moles of ferric oxide [tex](Fe_2O_3)[/tex]

The mole ratio between Fe and [tex]O_2[/tex] is [tex]\frac{4Fe}{3O_2}[/tex]

Answer:

I would say element

Explanation:

because it is made of two different types of atoms chemically bonded together!

I'm sorry if wrong!

Answer: Rutherford

Explanation:

Answer:

C

Explanation:

Single replacement reactions is when only one element gets replaced / changed. This usually looks like this: A + BC = B + AC or A + BC = C + AB

Therefore, the number of reactants must be equal to the number of products, since no actual combinations / break ups are occurring.

Answers A and D are eliminated right away since the number of products don't equal the number of reactants.

Answer B is wrong because it does not show simply one element being replaced, instead, two compounds are being formed. It doesn't look like the example given.

Only answer C shows that one element is replaced:

The iodine is replaced with bromine to form NaBr + I2

The chemical equation NaI + Br₂ --> NaBr + I₂ is an example of single replacement reaction.

Chemical equation is a symbolic representation of a chemical reaction which is written in the form of symbols and chemical formulas.The reactants are present on the left hand side while the products are present on the right hand side.

A plus sign is present between reactants and products if they are more than one in any case and an arrow is present pointing towards the product side which indicates the direction of the reaction .There are coefficients present next to the chemical symbols and formulas .

The first chemical equation was put forth by Jean Beguin in 1615.By making use of chemical equations the direction of reaction ,state of reactants and products can be stated. In the chemical equations even the temperature to be maintained and catalyst can be mentioned.

Learn more about chemical equation,here:

https://brainly.com/question/28294176

#SPJ2

i think its 50% bc its half of the box

Answer:

100%

Explanation:

Answer:

P = 3.23 atm

Explanation:

Given data:

Number of moles of gas = 30 mol

Temperature = 120°C

Volume of gas = 300 L

Pressure of gas = ?

Solution:

PV = nRT

P= Pressure

V = volume

n = number of moles

R = general gas constant = 0.0821 atm.L/ mol.K  

T = temperature in kelvin

Now we will convert the temperature.

120+273.15 = 393.15 K

P × 300 L = 30 mol × 0.0821 atm.L/mol.K × 393.15 K

P = 968.33 atm. L /300 L

P = 3.23 atm

Answer:

true

Explanation:

Answer:

is matter

Explanation:

The molecular formula : Cl₂O₆

Given

Molecular mass = 166.9 g

The empirical formula = ClO₃

Required

The molecular formula

Solution

The empirical formula is the smallest comparison of atoms of compound forming elements.  

A molecular formula is a formula that shows the number of atomic elements that make up a compound.  

(empirical formula) n = molecular formula

(ClO₃)n=166.9

(35.5+3.16)n=166.9

(83.5)n=166.9

n=2

(ClO₃)2=Cl₂O₆

Answer:

Mineral

Explanation:

Many minerals share the same colors so it would be one of the least important parts of mineral identification

Answer:

The theoretical yield in grams is 60.292 grams, and in moles the theoretical yield is 0.384. The percent yield is 94%.

Explanation:

The theoretical yield of bromobenzene is 60.3 grams and the percent yield of the reaction is 94.0%.

Explanation:

[tex]Yield(\%)=\frac{\text{Actual or experimental yield}}{\text{Theoretcial yield}}\times 100[/tex]

Given:

Mass of benzene = 30.0 g

The actual yield of bromobenzene = 56.7 g

To find:

Theoretical yield and percent yield of the reaction.

Solution:

Mass of benzene = 30.0 g

Moles of benzene =[tex]\frac{30.0 g}{78.11 g/mol}=0.384 mol[/tex]

[tex]C_6H_6+Br_2\rightarrow C_6H_5Br+HBr[/tex]

According to reaction, 1 mole of benzene gives 1 mole of bromobenzene, then 0.384 moles of benzene will give:

[tex]=\frac{1}{1}\times 0.384 mol=0.384 \text{mol of bromobenzene}[/tex]

Mass of 0.384 moles bromobenzene:

[tex]=0.384 mol\times 157.02g/mol=60.3 g[/tex]

The theoretical yield of bromobenzene = 60.3 g

The actual yield of bromobenzene = 56.7 g

The percent yield of the reaction:

[tex]Yield(\%)=\frac{56.7 g}{60.3 g}\times 100=94.0\%[/tex]

The theoretical yield of bromobenzene is 60.3 grams and the percent yield of the reaction is 94.0%.

Learn more about the percent yield of reaction here:

brainly.com/question/14519588?referrer=searchResults

brainly.com/question/2506978?referrer=searchResults

Explanation:

it is the one you have selected because it is the only solid one

Explanation:

The absolute temperature is the lowest possible temperature in the universe. At this temperature, all atoms become motionless and cease to move.

The value of the absolute zero is pegged at -273.16°C.

Answer:

Ions are formed when atoms lose or gain electrons, with the metal transferring electrons to the outermost shell of the non-metallic atom

Answer:

91.49 grams

Explanation:

No of molecules = no of moles × Avogadro's number

No of moles = No of molecules / Avogadro's number

Number of moles = 5.4×10^23/6.02×10^23

Number of moles = 0.897 moles of Al2O3

Number of moles = mass in gram / molar mass

Mass in gram = number of moles× molar mass

Mass in gram = 0.897× 102

91.49 grams

Answer:

last quarter moon/half moon

Explanation:

Answer:

d.

Explanation:

The answer is B. the molar mass.

The molar mass of a chemical compound is defined as the mass of a sample of that compound divided by the amount of substance in that sample, measured in moles.

Answer:

the ans is wrong

Explanation:

4.                 limestone heat lime + carbon dioxide

The reactants in this expression above is limestone

The products of the reaction is carbon dioxide and lime

Reactant is the species that gives the product and it is usually found on the left hand side of the expression.

The product is the substance on the right hand side of the expression that forms through the experiment.

Heat is used to facilitate the reaction.

5. An exothermic reaction is a reaction in which heat is given off.

An endothermic reaction is a reaction in which heat is absorbed in the process.

An exothermic reaction is always warmer after the reaction whereas an endothermic reaction is colder at the end of the reaction.

6.  Sodium salicylate is made from carbon dioxide and sodium phenoxide.

The reactants are:

                  Carbon dioxide and sodium phenoxide

The product is:

         Sodium salicylate

Answer:

alex

Explanation:

I dont know how to explain it but it is alex

Answer:

cation

Explanation:

Metal

Nonmetal

Anion

Cation

When naming a chemical compound, the cation is written first before anything else.

A typical ionic compound consists of two components - the cation and the anion. While the cation is positively charged in ion, the anion is negatively charged. The cation of a typical ionic compound is named first before the anion and the name often carries that of the element that composes it.

The name of the element that makes up the anion is modified by removing the last few characters ending the name and replacing it with the suffix 'ide'. For example, NaCl is named sodium chloride.

At the time of naming a compound, the one that would be written first would be:

- Cation

Learn more about 'Compound' here:

brainly.com/question/23950635