CHEMISTRY HIGH SCHOOL

Alpha and beta particles are similar because they both: have the same mass

have the same charge

are physical particles of matter

have the same penetration abilities

Answers

Answer 1
Answer: They are both physical particles of matter.
Answer 2
Answer: Definitely C for this one

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COLLEGE

Determine the molecular mass ratio of two gases whose rates of effusion have a ratio of 16 : 1.

Answers

Answer is: the molecular mass ratio of two gases is 1 : 256.
rate of effusion of gas1 : rate of effusion of gas = 16 : 1.
rate of effusion of gas1 = 1/√M(gas1).
rate of effusion of gas2 = 1/√M(gas2).
rate of effusion of gas1 = rate of effusion of gas2 · 16.
1/√M(gas1) = 1/√M(gas2) · 16 /².
1/M(gas1) = 1/M(gas2) · 256.
M(gas1) · 256 = M(gas2).

MIDDLE SCHOOL

What is an example of the extensive property

Answers

Answer:

Mass and volume are two examples of the extensive property.

MIDDLE SCHOOL

Observational data is easier to analyze and interpret when it is organized into tables, charts, or graphs. Please select the best answer from the choices provided
True or false

Answers

Answer: True

Explanation:

Answer:

T R U E

Explanation:

I just took the test

HIGH SCHOOL

When chlorine is added to acetylene, 1, 1, 2, 2-tetrachloroethane is formed: 2cl2 (g) + c2h2 (g) → c2h4cl4 (l) how many liters of chlorine will be needed to make 75.0 grams of c2h2cl4?

Answers

Answer:
             20 L of Cl₂

Solution:

The reaction is as follow,

                                   H₂C₂  +  2 Cl₂     →      H₂C₂Cl₄

According to equation,

       167.84 g (1 mole) H₂C₂Cl₄ is produced by  =  44.8 L (2 mole) of Cl₂
So,
                 75 g of H₂C₂Cl₄ will be produced by  =  X L of Cl₂

Solving for X,
                      X  =  (44.8 L × 75 g) ÷ 167.84 g

                      X  =  20 L of Cl₂
COLLEGE

Theoretically how many moles of carbonic acid will be produced by the 3.00 g sample of NaHCO3

Answers

NaHCO3 = 22.99 + 1.008 + 16(3) = 83.99 g/mol 
Na = 22.99g/83.99 g weight of molecule =.2727 or 27.27% 
3.0 g* .2727 = 0.8211 grams of sodium in sample of NaHCO3 

0.8211 grams Na + 1.266 grams Cl = 2.087 grams
Answer:

                2.21 g of H₂CO₃

Solution:

              The balance chemical equation for the conversion of sodium bicarbonate into carbonic acid is as follow,

                          NaHCO₃  +  HCl     →     H₂CO₃  +  NaCl

According to equation,

        84 g (1 mole) NaHCO₃ produces  =  62 g (1 mol) of H₂CO₃

So,

                3.0 g of NaHCO₃ will produce  =  X g of H₂CO₃

Solving for X,

                      X  =  (3.0 g × 62 g) ÷ 84 g

                       X  =  2.21 g of H₂CO₃

Hence, if the yield is ideal means, 100 % conversion takes place and all product is recovered then the amount of carbonic acid produced will be 2.21 g.

MIDDLE SCHOOL

How do to molecular mass for H2O

Answers

If the formula used in calculating molar mass is the molecular formula, the formula weight computed is the molecular weight. The percentage by weight of any atom or group of atoms in a compound can be computed by dividing the total weight of the atom (or group of atoms) in the formula by the formula weight and multiplying by 100.


HIGH SCHOOL

A substance that dissolves in a solvent is said to be a(n) __________

Answers

Answer:

Solute

Explanation:

A solute is a substance which dissolves in solvent. Solvent is a substance usually in liquid form that dissolves a solute. For example, salt dissolves in the water. Therefore, salt is the solute and water is the solvent

COLLEGE

Which of these is a general feature of the lipid bilayer in all biological membranes? a) individual lipid molecules are free to diffuse laterally in the surface of the bilayer

b) individual lipid molecules in one monolayer of the bilayer readily diffuse (flip-flop) to the other monolayer.

c) polar, but uncharged, compounds readily diffuse across the bilayer

d) the bilayer is stabilized by covalent bonds between neighboring phospholipid molecules.

e) the polar head groups face inward toward the inside of the bilayer

Answers

A

Individual lipid molecules are free to diffuse laterally in the surface of the bilayer is a general feature of the lipid bilayer in all biological membranes

Explanation:

The inside of the bilipid layer of the cell membrane of cells is made of fatty acid chains and cholesterol which are nonpolar molecules. they are sandwiched between the polar (glycerol) ends of the  chains because they are hydrophobic and cannot interact with the ‘watery’ extracellular fluids.  Non-polar molecules like lipids can easily diffuse laterally, within this lipid layers of the membrane because non-polar molecules interact well with other nonpolar molecules.

Learn More:

For more on the bilipid layers of cells check out;

brainly.com/question/2011453

brainly.com/question/1457466

brainly.com/question/2011432

brainly.com/question/7435492

#LearnWithBrainly

MIDDLE SCHOOL

What is the atomicity of ozone

Answers

Answer:

Explanation:

Atomicity of an element is a measure of the total number of atoms present in a molecule. For example- O2 , O Similarly, an ozone molecule consists of 3 atoms of oxygen and has an atomicity of 3. The atomicity of ammonia is NH3.Ammonia is a compound of nitrogen and hydrogen with the formula NH3.

(Could very much be incorrect, it's just what I think it is.)

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