Need this answered immediately. 50 points.

Answer:g

Explanation:

g

Answer:

Chemical properties of food are those properties that cannot be measured without altering the chemical composition of the food material.

Explanation:

Answer:

There are two types of reactions

Answer:

-14.4kJ

Explanation:

The value of heat energy in a bomb calorimeter with  a glucose sample of mass 4.40 g if changes temperature from 15 to 18 degree celsius is 16369.54 kJ.

Calorimeter is a thermal device used to determine the heat evolved or absorbed from a reaction. From this we can also calculate the enthalpy change.

If the enthalpy is negative, then the reaction is endothermic. If enthalpy change is positive, then the reaction is exothermic. The equation for finding the heat energy q from the mass, temperature change and heat capacity of calorimeter is given below:

q = mc ΔT.

It is given that the total mass is 804.40 g and heat capacity of the calorimeter is 550 J/°C g, then the heat energy  q is calculated as follows:

q = 804.40 g × 550 J/°Cg (18.7 °C - 15 °C)

  = 16369540J

  = 16369.54 KJ.

Hence, the value of q for the bomb calorimeter is 16369.54 KJ.

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Answer:

1. follow

2. corellation

3.does

Explanation:

i dont know for sure but I think those are the answers cause the two lines look around the same.

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Answer:

a molecule is the smallest particle in a chemical element or compound that has the chemical properties of that element or compound. Molecules are made up of atoms that are held together by chemical bonds. These bonds form as a result of the sharing or exchange of electrons among atoms

Answer:

: A molecule is the smallest particle in a chemical element or compound that has the chemical properties of that element or compound. Molecules are made up of atoms that are held together by chemical bonds. These bonds form as a result of the sharing or exchange of electrons among atoms.

Explanation:

i hope its right

Answer:

g/kg

Explanation:

they are both a unit of weight

notice how the others have a unit of weight and then measurement? g/kg are two units of weight

Answer:

Grams/kg

Explanation:

The mass of glycerol to that would need to be combusted to heat 500.0g of water from 20.0°C to 100.0°C is; 9.32 grams.

We must establish the fact that energy is neither created nor destroyed.

Therefore, the amount of heat absorbed by water is equal to the amount of heat released by the combustion of glycerol.

Total heat absorbed by water, H(water) is;

Q(water) = m C (T2 - T1)

Q(water) = 500 × 4.184 × (100-20)

Q(water) = 167.36 kJ

Consequently, the quantity of heat evolved by the combustion of glycerol is;

Q(glycerol) = 167,360 J = n × ΔH°comb

where, n = no. of moles of glycerol.

167.36 kJ= n × 1654 kJ/mole

n = 167.36/1654

n = 0.1012 moles of glycerol.

Therefore, mass of glycerol combusted, m is;

m = n × Molar mass

m = 0.1012 × 92.09

m = 9.32 g.

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Answer:

8 is the answer.

Explanation:

100,000,1000

= 10 x 10 x 10 x 10 x 10 x 10 x 10 x 10

= 10^8

Answer:

Q1) 0,1276 M

Molair mass of NaOCl = 74,44 g/mol

You have 9,5 g/L.

You need to calculate with the molar mass, how many moles 9,5 g are:

9,5 g / 74,44 g/mol = 0,1276 molAR

0,1276 mol / 1 L = 0,1276 M

Q2) 27.78  grams

The  mass    ca(Oh)2  needed  to  produce  1.5 l  of  0.25 solution  is  calculated  as follows

find  moles

=moles   = molarity   x  volume

moles is therefore =   1.5  x 0.25  =  0.375  moles

mass  =  moles  x  molar  mass

0.375mol  x  74.09 g/mol  =  27.78  grams

Explanation:

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Answer:

4

Explanation:

Answer:

1. Rinse with distilled water.

2. Avoid dropping it

3. Use a stopper and fill with water and shake

4. Dry

Answer: see below

Explanation:

1. Change in smell

2. Heat given off

3. New substance (cake) cannot be separated into the original ingredients

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The hydrolysis of  N,N-diethyl-m-toluamide yields 3-methylbenzoic acid which easily biodegradable.

The insecticide repellent N,N-diethyl-m-toluamide is used to repel rather than kill insects. It functions by interfering with the ability of the insects to detect body heat and skin chemicals. In a nutshell, it confuses the receptors in the insect.

The hydrolysis of N,N-diethyl-m-toluamide  yields 3-methylbenzoic acid and diethylamine as the products. This is important because the 3-methylbenzoic acid is not an environmental concern since it is readily biodegradable and does not accumulate significantly in living organisms. It has also not been found to be mobile in soil and water. Environmental concerns are always a prime consideration in assessing chemicals for use.

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Answer:

10.57

Explanation:

pOH = pKb + log(acid/base)

Answer:Plastic wrap is transparent and so nearly all light passes through easily ,

Wax Paper is translucent and so light is blurred or scattered .

Explanation:

What is Reflection ?

Reflection of light occurs when light hits a smooth surface that does not absorb any of the light but instead bounces it back off the surface.

A mirror is flat, smooth, and polished. When light hits a mirror it is not absorbed but is reflected off at a very predictable angle.

The angle that the light hits the mirror is called the angle of incidence.

The angle of light that bounces off the mirror is called the angle of reflection.

The Law of Reflection states that the angle of incidence is equal to the angle of reflection.

Plastic wrap is transparent and so nearly all light passes through easily ,

Wax Paper is translucent and so light is blurred or scattered .

Answer:

Step 1 of 3

To determine pressures in each of the different units, you need the below relations:

(a) To convert pressure in atmospheres to mm Hg, use the relation given by,

We have, initial pressure charged to the system is 4.8 atm. So, the pressure in mm Hg is  So, the pressure in mm Hg is.Freon-12 is used as a refrigerant in central home air conditioners. The rate of effusion of Freon-12 to Freon-11 (molar mass = 137.4 g/mol) is 1.07:1. The formula of Freon-12 is one of the following:

\mathrm { CF } _ { 4 } , \mathrm { CF } _ { 3 } \mathrm { Cl }, \mathrm { CF } _ { 2 } \mathrm { Cl } _ { 2 } , \mathrm { CFCl } _ { 3 } , \text { or } \mathrm { CCl } _ { 4 }. CF  4 ,CF  3Cl,CF  2 Cl  2 ,CFCl  3 , or CCl  4

​

Explanation:

The system is initially charged to a pressure of 4.8 atm.  4.8 atm in mm Hg is 3648 mm Hg, 4.8 atm in torr is 3648 Torr, 4.8 atm in Pa is  486360Pa and 4.8 atm in Psi is 70.56 psi.

The force applied to a unit area of a surface is described by pressure, a fundamental concept in physics and chemistry. It describes how much force is distributed over a certain area.

A. mm Hg (millimeters of mercury):

1 atm = 760 mm Hg

So, 4.8 atm = 4.8 ×760 mm Hg

                   ≈ 3648 mm Hg

B. Torr:

1 atm = 760 Torr

So, 4.8 atm = 4.8 ×760 Torr

                   = 3648 Torr

C. Pa (Pascals):

1 atm = 101325 Pa

So, 4.8 atm = 4.8 × 101325 Pa

                   ≈ 486360Pa

D. psi (pounds per square inch):

Given: 1 atm = 14.7 psi

So, 4.8 atm = 4.8 ×14.7 psi

                  ≈ 70.56 psi

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Answer:

Solar radiation is radiant energy emitted by the sun from a nuclear fusion reaction that creates electromagnetic energy.  About half of the radiation is in the visible short-wave part of the electromagnetic spectrum. The other half is mostly in the near-infrared part, with some in the ultraviolet part of the spectrum.

Explanation:

Hope it helps

stan twice

The mass of titanium metal formed is 148g.

The equation of the reaction is;

TiBr4(s) + 2H2(g) ------>Ti(s) + 4HBr(g)

The number of moles of hydrogen gas = 12.5 g/2.00 g/mol = 6.25 moles of hydrogen gas

If 2 moles of hydrogen gas yields 1 mole of titanium metal

6.25 moles of hydrogen gas yields 6.25 moles × 1 mole/2 moles = 3.1 moles of titanium metal

Mass of titanium metal = 3.1 moles of titanium metal × 47.8 g/mol = 148g

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Answer:

Which of the following is a possible set of quantum numbers for a 3p orbital?

Since you are dealing with a 3p-orbital, your principal and angular momentum quantum numbers will be n=3 and l=1 .

Answer:

Organ system

Explanation:

Answer:

I dont understand what the question means

Explanation:

Answer:

D nuclear fission, the process where the nucleus of an atom is split into two or more smaller nuclei. Nuclear fusion is the reaction of the combination of nuclei.