1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
galina1969 [7]
3 years ago
11

When was that one moment when you laughed the hardest

Chemistry
2 answers:
kolezko [41]3 years ago
7 0

Answer:

last month!!

it was on yt

Andrei [34K]3 years ago
4 0

Answer:

My weightlifting coaches are all gay for each other and its hilarious to see 3 large buff men play fighting and wrestling around the weight room.

You might be interested in
How many grams of hydrogen are in 46 g of CH40?<br>​
Romashka [77]

Answer:

5.8 grams of hydrogen

Explanation:

Your welcome

6 0
2 years ago
Read 2 more answers
How many molecules of CO2 will be produced by the decomposition
34kurt

Answer:

2.99×10²⁵ molecules of CO₂ are produced

Explanation:

Decomposition reaction is:

Ca(HCO₃)₂ => CaO(s) + 2CO₂(g) + H₂O(g)

Ratio is 1:2. Let's make a rule of three:

1 mol of bicarbonate can produce 2 moles of CO₂

Therefore, 24.9 moles of bicarbonate may produce, 49.8 moles (24.9 .2 )/1

Let's determine the number of molecules

1 mol has 6.02×10²³ molecules

49.8 moles must have (49.8 . 6.02×10²³) / 1 = 2.99×10²⁵ molecules

4 0
3 years ago
In an exothermic reaction, the water will _______ in a calorimeter. A. release heat B. drop in temperature C. drop in volume D.
elena-14-01-66 [18.8K]

the correct answer is D, absorb heat

7 0
3 years ago
Read 2 more answers
1. If we used 0.0100 moles of K2CO3, how many moles of SrCO3 can be expected to form?​
faltersainse [42]

Answer:

0.01 moles of SrCO₃

Explanation:

In this excersise we need to propose the reaction:

K₂CO₃ + Sr(NO₃)₂  →  2KNO₃ + SrCO₃

As we only have data about the potassium carbonate  we assume the strontium nitrite as the excess reactant.

1 mol of K₂CO₃ react to 1 mol of Sr(NO₃)₂ in order to produce 2 moles of potassium nitrite and 1 mol of strontium carbonate.

Ratio is 1:1. In conclussion,

0.01 mol of K₂CO₃ must produce 0.01 moles of SrCO₃

3 0
3 years ago
A weak monoprotic acid is titrated with 0.100 MNaOH. It requires 50.0 mL of the NaOH solution to reach the equivalence point. Af
larisa86 [58]

Explanation:

The given reaction is as follows.

        HA(aq) + NaOH (aq) \rightleftharpoons NaA(aq) + H_{2}O(l)

Hence, number of moles of NaOH are as follows.

        n = 0.05 L \times 0.1 M

           = 0.005 mol

After the addition of 25 ml of base, the pH of a solution is 3.62. Hence, moles of NaOH is 25 ml base are as follows.

             n = 0.025 L \times 0.1 M

                = 0.0025 mol

According to ICE table,

         HA(aq) + NaOH (aq) \rightleftharpoons NaA(aq) + H_{2}O(l)

Initial:     0.005 mol   0.0025 mol              0                  0

Change: -0.0025 mol  -0.0025 mol        +0.0025 mol

Equibm:   0.0025 mol    0                         0.0025 mol

Hence, concentrations of HA and NaA are calculated as follows.

          [HA] = \frac{0.0025 mol}{V}

        [NaA] = \frac{0.0025 mol}{V}

       [A^{-}] = [NaA] = \frac{0.0025 mol}{V}

Now, we will calculate the pK_{a} value as follows.

          pH = pK_{a} + log \frac{A^{-}}{HA}

       pK_{a} = pH - log \frac{[A^{-}]}{[HA]}

                  = 3.42 - log \frac{\frac{0.0025 mol}{V}}{\frac{0.0025}{V}}

                  = 3.42

Thus, we can conclude that pK_{a} of the weak acid is 3.42.

           

8 0
3 years ago
Other questions:
  • What Mendel called factors are now called
    11·2 answers
  • What is traveling through electric lines?<br> 1.Protons <br> 2.Electrons<br> 3.Neutrons
    11·2 answers
  • 2.<br> _______ properties depend on the amount of<br> matter present
    15·1 answer
  • How many moles of oxygen would it takie to produce 8 moles of carbon dioxide?​
    14·2 answers
  • In the atmosphere water vapor condenses to form clouds.
    10·2 answers
  • When atomic orbitals of two nuclei overlap, the mutual attraction between a negatively charged electron pair and the two positiv
    9·1 answer
  • A sample of oxygen occupies a volume of 150 cm3 at 72 C. What will be volume of oxygen when the temperature drops to 2 C?
    5·2 answers
  • Astronauts go to live on the International Space Station for a period of ________ month(s). A one B three C six D nine
    5·1 answer
  • How is synthesis and replacement reactions related?
    5·1 answer
  • Ayo that was cool, ya'll amazing. <br><br> Another one. Next one gonna be 10 points.
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!