I need correct answer cuz this is exam so don't write anything just for point plzzz :) ...

Answer:

Physical Chanhe is the answer : )

Answer:

Box 1 and Box 2 are the same mass.

Explanation:

Because they both change speed due to having the same mass!

Hope this helps! :) BRAINLIEST PLZ

Answer:

Nope

Explanation:

Answer: nope, it should be : C5H12 + 8O2 → 5CO2 + 6H2O

Answer:

The answer is 17km

Answer is 38/3 or 12.67

3x=38

x=38/3

therefore answer is the one mentioned above

Answer:

I think the answer is false

Answer:

1. In the beaker, stir 1/2 cup of Epsom salts with 1/2 cup of very hot tap water for at least one minute. ...

2. Add a couple drops of food coloring if you want your crystals to be colored.

3. Put the beaker in the refrigerator.

4. Check on it in a few hours to see a beaker full of epsom salt crystals!

Explanation:

Answer:

b. Atoms are neither created nor destroyed in a chemical reaction

Explanation:

B is correct, because the law of conservation of mass tells us that during a chemical reaction, there is no net gain or loss of mass. Mass comes from the atoms themselves that are participating in the reaction, so there is no gain or loss (creation or destruction) of atoms.

Answer:

b

Explanation:

Answer:

2

Explanation:

its has more space now cause of The to contemplates

Answer:

305.88 g

Explanation:

4 Al + 3 O₂ → 2 Al₂O₃

First, we convert 6 moles of aluminum (Al) into moles of aluminum oxide (Al₂O₃), using the stoichiometric coefficients:

6 mol Al * [tex]\frac{2molAl_2O_3}{4molAl}[/tex] = 3 mol Al₂O₃

Finally we convert 3 moles of aluminum oxide into grams, using its molar mass:

3 mol Al₂O₃ * 101.96 g/mol = 305.88 g

Answer:

262.8 g

Explanation:

Molarity = 3.0M

Mass = ?

Volume = 2.40L

The relationship between these quantities is given as;

Molarity = Number of moles / Volume

Number of moles =  Molarity * Volume

Number of moles = 3 * 2.4 = 7.2 mol

Mass = Number of moles * Molar mass

Molar mass of HCl = 1 + 35.5 = 36.5 g/mol

Mass = 7.2 *   36.5 = 262.8 g

Answer:

262.44 grams of HCl is contained in 2.40 L of a 3.0 M solution.

Explanation:

Molarity (M) or Molar Concentration is the number of moles of solute that are dissolved in a certain volume.

Molarity is calculated as the number of moles divided by the volume of the solution:

[tex]Molarity=\frac{number of moles of solute}{volume of solution}[/tex]

Molarity is expressed in units [tex]\frac{moles}{liter}[/tex].

In this case:

Replacing:

[tex]3 M=\frac{number of moles of solute}{2.40 L}[/tex]

and solving you get:

number of moles of solute= 3 M* 2.40 L

number of moles of solute= 7.2 moles

Being the molar mass of HCl 36.45 g/mole, then you can apply the following rule of three: if 1 mole has 36.45 grams, 7.2 moles how much mass does it have?

[tex]mass of HCl=\frac{7.2 moles*36.45 grams}{1 mole}[/tex]

mass of HCl= 262.44 grams

262.44 grams of HCl is contained in 2.40 L of a 3.0 M solution.

Answer:

lol you use batter use flour salt pepper  thats what gives it the fried and crispy taste

Explanation:

Answer:

pH = 6.20

Explanation:

The pKa of cacodylic acid is 6.

To solve this question we must use Henderson-Hasselbalch equation:

pH = pKa +log [A⁻] / [HA]

Where pKa is the pKa of the weak acid = 6

And [] could be taken as the moles of A⁻ the conjugate base, and HA, the weak acid.

The moles of the NaOH added to the solution of the weak acid are = Moles A⁻

And moles HA = Initial moles HA - Moles NaOH added

Initial moles HA:

0.0200L * (0.130mol / L) = 0.00260 moles

Moles NaOH:

0.0200L * (0.0800mol / L) = 0.00160 moles = [A⁻]

Moles HA =

0.00260 moles - 0.00160 moles = 0.00100 moles = [HA]

pH = 6 +log [0.00160 moles] / [0.00100 moles]

The pH of the resulting solution is 1.6.

Let cacodylic acid be HA, mixing cacodylic acid and NaOH, the following occurs;

HA(aq) + NaOH(aq) ------> NaA(aq) + H2O(l)

Number of moles of NaOH = 0.0800 molL−1 × 20.0/1000 = 0.0016 moles

Number of moles of HA = 20.0/1000  × 0.130 = 0.0026 moles

We can see that the HA is in excess, Number of moles of excess acid =

0.0026 - 0.0016 = 0.001 moles

Total volume of solution = 20.0 mL + 20.0 mL = 40 mL or 0.004 L

Molarity of excess acid =  0.001 moles/0.004 L = 0.025 M

pH = -log[H^+]

pH = -log[0.025 M]

pH = 1.6

Learn more: https://brainly.com/question/2510654

Answer:

chlorine and I think maybe sulphur. but check the internet

Answer:

chlorine I think so . sorry if it ain't the right answer

Explanation:

you can use Born-Lande equation,

U=-(A×e^2×Z+ ×Z- ×N)\r ×(1-1/n)

here,U=lattice energy

A=madelung constant

n=Born exponent(depends on repulsion between ion)

e=charge of electron

Z+,Z-=charge of cation and anion

r=distance between cation and its neighbour anion in

space lattice

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Actually Welcome to the Concept of the Geography.

Surface currents in a ocean or a sea are driven by Winds.

Answer:

winds :)

Explanation:

Answer:

22.4 L

Explanation:

A gas at STP will possess the following;

Pressure (P) = 1 atm

Temperature (T) = 273K

General gas constant (R) = 0.0821 Latm/molK

Using the general gas law formula to calculate the volume a gas of 1 mol will contain;

PV = nRT

V = nRT/P

V = 1 × 0.0821 × 273 ÷ 1

V = 22.41/1

V = 22.4 litres

Answer:

2 L

Explanation:

Divide the mass by the concentration to find the volume.

(6 g)/(3g/L) = 2 L

According to the concept of solubility, in order to make solution of sugar the total volume of solution is 2 g/L.

Solubility is defined as the ability of a substance which is basically solute to form a solution with another substance. There is an extent to which a substance is soluble in a particular solvent. This is generally measured as the concentration of a solute present in a saturated solution.

The solubility mainly depends on the composition of solute and solvent ,its pH and presence of other dissolved substance. It is also dependent on temperature and pressure which is maintained.Concept of solubility is not valid for chemical reactions which are irreversible. The dependency of solubility on various factors is due to interactions between the particles, molecule or ions.

In order to calculate total volume of solution divide mass/ concentration that is 6/3=2 g/L.

Thus, the total volume of the solution is 2 g/L.

Learn more about solubility,here:

https://brainly.com/question/29589228

#SPJ2

hbzjaj

Explanation:

competition for food

Answer: A. They were traveling through different types of rocks

Explanation:

Answer:

1 and 4 and 24

Explanation:

I know this because i passed 1st grade

Answer:

Scientific change is: "Any change in the scientific mosaic, i.e. a transition from one accepted theory to another or from one employed method to another. "

Explanation:

Answer:

double replacement occurs

Answer:

Structural proteins

Explanation:

Glad I could Help Pls Brainliest