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Naya [18.7K]
3 years ago
6

What mass (grams) of Cr304 is required to prepare 1,50 liters of 3.00 M solution?

Chemistry
1 answer:
Brut [27]3 years ago
6 0

Answer:

idk

Explanation:

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Help please .............​
lapo4ka [179]

Answer:

And what is your question

Explanation:

3 0
3 years ago
I need to make up an experiment !! Please help
katen-ka-za [31]

Question: Baking a Cake Without Flour.

Hypothesis: I think that when I remove the flour from the standard cake recipe, I'll end up with a flat but tasty cake.

Procedure: I baked two cakes during my experiment. For my control, I baked a cake following a normal recipe. I used the Double Fudge Cake recipe on page 292 of the Betty Crocker Cookbook. For my experimental cake, I followed the same recipe but left out the flour. I first obtained a 2-quart mixing bowl.  

Results: My control cake, which I cooked for 25 minutes, measured 4 cm high.  Eight out of ten tasters that I picked at random from the class found it to be an acceptable dessert. After 25 minutes of baking, my experimental cake was 1.5 cm high and all ten tasters refused to eat it because it was burnt to a crisp.

What did I learn?/Conclusion: Since the experimental cake burned, my results did not support my hypothesis.  I think that the cake burned because it had less mass, but cooked for the same amount of time.  I propose that the baking time be shortened in subsequent trials.

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I hope this helped :))

7 0
3 years ago
What is the significance of "Er" in the diagram?
Drupady [299]

Answer:

The significance of "Er" in the diagram is :

B.) Threshold energy for reaction

Explanation:

Threshold energy : It is total amount of energy required by the reactant molecule to reach the transition state .

Activation energy : It is the excess energy absorbed by the molecules to reach the transition state.

<u>Activation Energy = Threshold Energy - Average Kinetic Energy</u>

<u>This means Activation energy decreases on increasing kinetic energy</u>

On increasing Temperature average kinetic energy of the molecule increases which reduces the activation energy and the reaction occur faster in that case.

Catalyst also reduces the Activation energy.

<u>Er = Threshshold energy for reaction at 30 degree</u>

<u>Ea = Activation Energy</u>

<u>The given figure shows that the threshold energy decreases on increasing the temperature</u>

<u>Only the molecule having energy greater than Er can react to form product</u>

3 0
3 years ago
Read 2 more answers
The high electrical conductivity of metals is primarily due to
zubka84 [21]

High conductivity of metals is caused by electrons that are free to move through the lattice.

hope this helps!

7 0
2 years ago
My teacher never taught me how to do this helpppp!!!!!!!
djverab [1.8K]
Just search up how much the weight is equal to another, then multiply it, thats what i do lol sorry if im no help
6 0
3 years ago
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