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erastova [34]
3 years ago
5

The students in Mrs. Jamison's class were conducting a lab experiment to determine the if temperature affected how fast 2 drops

of food coloring mixed into water. They used frozen water, refrigerated water, room temperature water, and hot water. Which water allowed the food coloring to mix the fastest?
A) Hot water
B) Frozen water
C) Refrigerated water
D) Room temperature water
Chemistry
2 answers:
Zolol [24]3 years ago
7 0

Answer:

A

Explanation:

blsea [12.9K]3 years ago
6 0
Hot water because the particles are moving around much more faster increasing the possibility of them to bounce around and making it easier to mix
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Which property of an atom's structure was used to organize the periodic table?
VashaNatasha [74]
It is the outermost electrons, for example all the first line has one outer electron and the second has to and so on and so forth. BUT THE TRANSITION METALS FOLLOW A DIFFERENT RULE.
5 0
3 years ago
What is formed when atoms of one type react with atoms of other types?
Pachacha [2.7K]
A compound
its refers to a  substance formed when two or more types of atoms bond chemically
8 0
4 years ago
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WHO IS GOOD AT CHEMISTRY EQUATIONS? I NEED A QUESTION ANSWERED BY TONIGHT! ITS THE ONLY ONE IM STUCK ON:
sattari [20]

Answer:

374 atoms would be present in 22 units of aluminum sulfate.

Explanation:

Formula for Aluminium Sulfate :  Al₂(SO₄)₃

Al = 2

S = 1

O = 4

(SO) = 3

∴ Number of atom in one unit is :  2 + (1+4)3 ==> 17

If there are 17 atoms in one unit, therefore;

Number of atoms in 22 units = 17 x 22

                                                = 374 atoms

4 0
3 years ago
A gas sample with a mass of 12.8 g exerts a pressure of 1.2 atm at 15°c and a volume of 3.94 l. what is the molar mass of the ga
Kryger [21]
We can use the ideal gas law equation to find the number of moles in the gas
PV = nRTwhere P - pressure - 1.2 atm x 101 325 Pa/atm = 121 590 Pa
V - volume - 3.94 x 10⁻³ m³
n - number of moles 
R - universal gas constant - 8.314 Jmol⁻¹K⁻¹
T - temperature - 15 °C + 273 = 288 K
substituting the values in the equation 
121 590 Pa x 3.94 x 10⁻³ m³ = n x 8.314 Jmol⁻¹K⁻¹ x 288 K
n = 0.200 mol
molar mass of gas is = mass / number of moles 
molar mass = 12.8 g / 0.200 mol = 64 g/mol 
molar mass of gas is 64 g/mol
3 0
3 years ago
What is the pH of a 900 mL solution containing 3.40 grams of hydrocyanic acid
Allushta [10]

Answer:

pH = 5.05

Explanation:

pH is derived from the concentration of hydronium ions in a solution. Hydrocyanic acid is HCN.

First, we shall figure out the moles of HCN:

\frac{3.4g}{27.03g/mol}  = 0.125786

If HCN was a strong acid:

HCN has a 1:1 ratio of H+ ions, the moles of H+ is also the same.

To find the molarity, we now divide by Liters. This gets us:

\frac{0.125786 moles}{0.9L} = 0.139762 M

Finally, we plug it into the definition of pH:

pH = -log[H^{+} ]

pH = -log(0.139762)

pH = 0.855

However, since HCN is a weak acid, it only partially dissociates. The K_a of HCN is 6.2 * 10^{-10}.

K_a = \frac{[H^+][A^-]}{[HA]}

We can use an ice table to determine that when x = H+,

K_a = \frac{x^2}{0.125786-x}

[H^+] = 8.83*10^{-6}

pH = -log[H^{+} ]

pH = -log(8.83 * 10^{-6} )

pH = 5.05

7 0
4 years ago
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