How do the farmers use the property of density of cranberries to harvest the crop?

Answer:

Q = 4019.4 J

Explanation:

Given data:

Mass of ice = 20.0 g

Initial temperature = -10°C

Final temperature = 89.0°C

Amount of heat required = ?

Solution:

specific heat capacity of ice is 2.03 J/g.°C

Formula:

Q = m.c. ΔT

Q = amount of heat absorbed or released

m = mass of given substance

c = specific heat capacity of substance

ΔT = change in temperature

ΔT = T2 - T1

ΔT =  89.0°C - (-10°C)

ΔT = 99°C

Q = 20.0 g ×2.03 J/g.°C × 99°C

Q = 4019.4 J

Answer:

sea water

Explanation:

a sea water can match the following

Answer:

It is more important because of the freedom.

Explanation:

While at home you can do your work of course... but you could lay down, take a nap. You could get on the game, play around. You could draw, and fiddle and dance and do WHATEVER you want with no teacher to stop you so you have to be your own motivation. You have to be your own teacher or its VERY easy to fail.

Percent yield = 70%

Percent yield is the comparison of the amount of product obtained from a reaction with the amount you calculated

General formula:

Percent yield = (Actual yield / theoretical yield )x 100%

An actual yield is the amount of product actually produced by the reaction. A theoretical yield is the amount of product that you calculate from the reaction equation according to the product and reactant coefficients

Reaction

2H₂ (g) + O₂ (g) → 2H₂O (g)

[tex]\tt mass=mol\times MW(mol~ratio~H_2O\div H_2=2\div 2)\\\\mass=(\dfrac{2}{2}\times \dfrac{13.8}{2})\times 18~g/mol\\\\mass=124.2~g[/tex]

[tex]\tt \%yield=\dfrac{87}{124.2}\times 100\%=\boxed{\bold{70\%}}[/tex]

Answer:

helium is denser than air

Answer:

For air, which has a molar mass of 29.0 g/mol, this gives a density of 1.18 g/l. Helium, which has a mass of 4.00 g/mol, has a density of 0.164 g/l.

Answer:D) it is used as an insulator

Explanation:

Answer:

N2O

Explanation:

hope am right.....

Answer:

photosynthesis occurs so the plants can create energy from carbon dioxide and sunlight.  

Explanation:

so basiclly it occurs so the plants can create energy to stay alive.

Answer:

Explanation:

photosynthesis occurs basically to help plants get light in order to produce its necessary daily production of nutrients needed for animals to get carbohydrates froms which is eaten by animals since it gives energy. so basically photosynthesis--> energy --> carbs for mammals to eat!

the green colour reflects off the plant so it is not absorbed by the chloroplasts  rather all colours are absorbed just not green.

and every organic material on earth is produced by these cells which convert energy from the sun into nutrient filled plants.. its essential for the CO2 cycle ,  and since they conduct photo synthesis they are lowest level in the food chain so basically its important since they create nutrients for our plants.

The correct statement is B. Three molecules of N₂ should be produced during the decomposition. :)

Answer: b

Explanation: I took the quiz

Answer:

the action or process of filtering something or in chemistry separating suspended solid matter from a liquid causing latter to pass through the pores is some substance

Answer:

B. The cell membrane surrounds particles outside the cell.

Explanation:

The last step is when the cell membrane completely surrounds particles outside the cell.

This process is often known as endocytosis.

Answer: 3

Explanation:

Answer:

kinetic energy

Explanation:

may be iam not sure

Answer:

Electromagnets are only functional when electricity is passing through them. In other words, they only create a magnetic field when there is an electric current flowing.

A power source like a battery is therefore necessary to supply the electric current necessary for the magnet to work however, it will not work unless the circuit is closed as electricity cannot not flow in an open circuit because current needs to be able to flow from one end of a power source to the other end.

Explanation:

ha hot dog hamburger hamburger ng baboy hahaha bomba girl home baboy

Answer: The results of the experimental observations should coincide with the facts of the current theories.

Explanation:

The scientific theory can be defined as the well defined as supported explanation for a natural phenomena. It is based upon the facts observed and also supported by the evidences obtained from the experimental trials.

If the experimental observations do not match with the concept of current scientific theory then the scientific either perform the experiment with the same scientific methodology or can switch to another scientific methodology to satisfy the facts of the current theories.

Answer:

I Would bc it's the better opportunity

Answer:

this question doesnt make any sene

Explanation:

The reaction equation is the chemical formula of reagents and product substances

A reaction coefficient is a number in the chemical formula of a substance involved in the reaction equation. The reaction coefficient is useful for equalizing reagents and products.

Transformations :

1. CaO + H₂O⇒Ca(OH)₂

2. CaO + CO₂⇒CaCO₃

3. Ca(OH)₂+ 2HCl⇒CaCl₂+2H₂O

4. Ca(OH)₂+H₂CO₃⇒CaCO₃+2H₂O

5. CaCO₃⇒CaO+CO₂

Answer:

6.02 x 10²²molecules

Explanation:

Given parameters:

Mass of CO₂  = 4.4g

Unknown:

Number of molecules in CO₂  = ?

Solution:

To find the number of molecules in the given mass, we have to find the number of moles in the compound first;

   Number of moles  = [tex]\frac{mass}{molar mass}[/tex]  

Molar mass of CO₂  = 12 + 2(16) = 44g/mol

Insert the parameters and solve;

   Number of moles  = [tex]\frac{4.4g}{44g/mol}[/tex]   =  0.1mol

  1 mole of a substance contains 6.02 x 10²³molecules

  0.1 mole of CO₂ will contain 0.1 x 6.02 x 10²³molecules

                                                 = 6.02 x 10²²molecules

The mass of one electron : 9.103 x 10⁻²⁸ g

Electrons are a part of the atomic nucleus particles (including protons and neutrons), and are negatively charged (-1)

An electron has the charge of  -1.6022 x 10⁻¹⁹C

1 g =  -1.76 x 10⁸ C

so the mass of one electron :

[tex]\tt \dfrac{1.6022\times 10^{-19}}{1.76\times 10^8}=9.103\times 10^{-28}~g[/tex]

Answer:

cylindar a

Explanation:

I took the test

Answer:

A

Explanation:

Answer:A substance must absorb heat energy so that it can melt or boil. The temperature of the substance does not change during melting, boiling or freezing - even though energy is still being transferred

Explanation:imm not sure

Answer:

1 animal cell

2?

3 mircoscope

4?

5 it means whenever you becareful

Answer:

C3H6O + 4O2 → 3CO2 + 3H2O or 11

Explanation:

Answer:

11

Explanation:

Answer:

3.1atm

Explanation:

Given parameters:

Volume of gas = 2L

Number of moles  = 0.25mol

Temperature  = 25°C = 25 + 273  = 298K

Unknown:

Pressure of the gas = ?

Solution:

To solve this problem, we use the ideal gas equation.

This is given as;

       PV  = nRT

P is the pressure

V is the volume

n is the number of moles

R is the gas  constant  = 0.082atmdm³mol⁻¹K⁻¹

T is the temperature

          P  = [tex]\frac{nRT}{V}[/tex]  

 Now insert the parameters and solve;

         P  = [tex]\frac{0.25 x 0.082 x 298}{2}[/tex]   = 3.1atm

Answer:

Explanation:

2. a [CO3 2-][H3O+] / [H2O][HCO3-

b. [H2PO4-][H3O+]/[H3PO4][H2O]

Answer:

Gallium - Phosphorous - Fluorine - Chlorine

Explanation:

Answer:

Gallium < Phosphorus < Chlorine < Fluorine

Explanation:

<3

Answer:

0.000000000666863

Explanation:

F = GMm/R²