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Viefleur [7K]
2 years ago
13

Describe what you would do if a glass beaker drops and breaks. List the appropriate steps in order.

Chemistry
2 answers:
MA_775_DIABLO [31]2 years ago
8 0
1. Leave everything alone and don't touch the glass .
2. Tell a Teacher .
3. And that's it .
GrogVix [38]2 years ago
6 0

Answer:

  • Wear gloves that will protect your hands from cuts
  • Use a broom and dustpan to collect the broken beaker
  • Dispose it in the disposable container allocated for broken/sharp objects
  • Alert the lab instructor about the incident.

Explanation:

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Concrete is made of an uneven mixture of gravel, sand, and water. It is _____. homogenous heterogeneous a solution a solute
Kobotan [32]

heterogeneous, because it does not have a uniform texture

hope That helps

7 0
2 years ago
6.5 Moles of Al reacts with 7.2 Moles of H2O What is the limiting reactant and calculate the Theoretical Yield?
SVEN [57.7K]

Answer:

H₂O is the limiting reactant

Theoretical yield of 240 g Al₂O₃ and 14 g H₂

Explanation:

Find how many moles of one reactant is needed to completely react with the other.

6.5 mol Al × (3 mol H₂O / 2 mol Al) = 9.75 mol H₂O

We need 9.75 mol of H₂O to completely react with 6.5 mol of Al.  But we only have 7.2 mol of H₂O.  Therefore, H₂O is the limiting reactant.

Now find the theoretical yield:

7.2 mol H₂O × (1 mol Al₂O₃ / 3 mol H₂O) × (102 g Al₂O₃ / mol Al₂O₃) ≈ 240 g Al₂O₃

7.2 mol H₂O × (3 mol H₂ / 3 mol H₂O) × (2 g H₂ / mol H₂) ≈ 14 g H₂

Since the data was given to two significant figures, we must round our answer to two significant figures as well.

4 0
2 years ago
Consider the following mechanism.
solong [7]

Answer :

(a) The overall equation is:

ClO^-(aq)+I^-(aq)\rightarrow Cl^-(aq)+IO^-(aq)

(b) The intermediates are  :

OH^-(aq),HClO(aq)\text{ and }HIO(aq)

Explanation :

<u>Part (a) :</u>

(1) ClO^-(aq)+H_2O(l)\rightarrow HClO(aq)+OH^-(aq)   (fast)

(2) I^-(aq)+HClO(aq)\rightarrow HIO(aq)+Cl^-(aq)    (slow)

(3) OH^-(aq)+HIO(aq)\rightarrow H_2O(l)+IO^-(aq)   (fast)

By adding the three equations and cancelling the common terms on both side, we will get the overall equation.

ClO^-(aq)+I^-(aq)\rightarrow Cl^-(aq)+IO^-(aq)

<u>Part (b)  :</u>

Intermediates are generated and consumed in the mechanism and do not include in the overall equation.

Since, intermediates will not include in the overall mechanism.

The intermediates are  :

OH^-(aq),HClO(aq)\text{ and }HIO(aq)

7 0
3 years ago
Do the number of protons in an atom of an element always equals its atomic weight.
Elenna [48]
No. The number of a protons is not equal to it's atomic weight, instead it is equal to the 'atomic number'
5 0
3 years ago
The 20 amino acids vary only in their?
Helen [10]
Amino groups due to the chain can extend longer than the other
8 0
3 years ago
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