3 years ago

Please help!

2 answers:

7 0

in a chemical reaction,mostly everything changes,it could be color,texture and others.so i think for sure its the first one.( The reaction rates can change)

omeli [17]3 years ago

3 0

Answer: A. The reaction rates can change.

Explanation:

You might be interested in

What is the mass of Al₂O3 that will contain 10 kg of aluminium?

Oksanka [162]

Answer:

1 mole of Al2O3 = 102 grams

1 mole of Al2 = 54 grams

102 grams of Al2O3 contains = 54 gram of Al2

10kg of Al2O3 contains = (54/102)*10000g Al2

= 5294.11 g Al2 or 5.29411 kg

5 0

2 years ago

Read 2 more answers

What is the pH of 0.000134 M solution of HCI?

mafiozo [28]

Answer: The pH will be 3.87

Explanation:

pH or pOH is the measure of acidity or alkalinity of a solution.

pH is calculated by taking negative logarithm of hydrogen ion concentration.

$pH=-\log [H^+]$

$HCl\rightarrow H^++Cl^{-}$

According to stoichiometry,

1 mole of $HCl$ gives 1 mole of $H^+$

Thus $0.000134$ moles of $HCl$ gives = $\frac{1}{1}\times 0.000134=0.0001342$ moles of $H^+$

Putting in the values:

$pH=-\log[0.000134]$

$pH=3.87$

Thus the pH will be 3.87

5 0

2 years ago

Read 2 more answers

Aspirin is a common headache treatment, and it needs to dissolve into the blood to work on a person. Which will work faster, asp

bulgar [2K]

Powder. It will dissolve faster and should provide rapid pain relief.

8 0

2 years ago

Read 2 more answers

The atomic mass of oxygen is 15.999 amu whatbdoes the value equal

sweet-ann [11.9K]

Answer:

The sum of the protons and neutrons.

Explanation:

protons + neutrons = atomic mass

7 0

2 years ago

The mass of an electron is about 9.11 × 10 -9 kg., write this whole number

Pepsi [2]

Answer:0.00000009

Explanation:

9.11 × （1/1000000000）=0.00000009

8 0

2 years ago