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Ratling [72]
2 years ago
11

Help pleaseeeeeeeee just need 4 answers

Chemistry
1 answer:
larisa86 [58]2 years ago
8 0

Answer:

Here, acceleration due to gravity(a) is assumed as 10m/s².We can also take it as 9.8m/s²

Explanation:Brick) Weight=m * a=1 * 10=10N\\Bag of books) Mass=f/a=25/10=2.5kg\\Bag of potatoes) Weight=m * a=10 * 10=100N\\Bag of cement) Mass=f/a=400/10=40kg

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What are the roles of producers,consumers, and decomposers in an ecosystem?
scoundrel [369]
The producers of an ecosystem make energy available to all the other living parts of an ecosystems. Consumers like humans eat the food that producers like plants made decomposers decompose dead plants and animals when they die like bacteria is a decomposer
5 0
3 years ago
Read 2 more answers
If the potato solution was boiled for 10 minutes and cooled for 10 minutes before being tested, the average time for the disks t
posledela

Answer:  The correct answer is :  D) more than 30 seconds

Explanation:  This experiment is carried out in order to study the actions of the catalase enzyme on hydrogen peroxide. Catalase is extracted from potatoes and stored on ice. 1%, 5%, 10% and 15% hydrogen peroxide solutions are prepared. Filter papers are soaked with the catalase and then placed inside each hydrogen peroxide solution. Then the time it takes for the filter paper discs to float from the bubbles that are produced is measured.

5 0
3 years ago
List the type of reaction. Predict the outcome and balance.
Yuliya22 [10]

Answer:

Single Displacement Reaction: a reaction in which an element is swapped for another in a molecule

A + BC ---> AC + B

Double Displacement Reaction: a reaction in which the cation of one molecule is swapped with a cation of another molecule

AB + CD ---> AD + CB

a) Single Displacement Reaction

3 Ca + 2 AlBr₃ ----> 3 CaBr₂ + 2 Al

b) Single Displacement Reaction

2 Al + 3 MgSO₄ ----> Al₂(SO₄)₃ + 3 Mg

c) Double Displacement Reaction

AgNO₃ + KCl ----> AgCl + KNO₃

3 0
2 years ago
Why is it important for all of your glassware to be clean and dry before performing a titration
ss7ja [257]

Explanation:

It is necessary that the glassware which we use during titration needs to be clean and dry before use because otherwise the remaining reagents will get mixed up with the solutions.

As a result, this will lead to a change in analysis results.

Hence, an error will occur in the resulting values.

Also, when not cleaned properly the any other substance remaining in the glassware might react with the solution leading to a change in the solution.

In that case also, error will occur.

5 0
3 years ago
Idk how to do this at all!!!
sergey [27]
Hello there!

I am not really sure which part you are talking about but let me answer some of them.

First, you need to read the information they gave you about glucose etc..

13- What is produced in photosynthesis?
"Photosynthesis is essential for all life on earth, because it provides food and oxygen."

Thus, the answer is: Photosynthesis produced food and oxygen.

14- What is the glucose used for?
"The glucose produced is used by the plant for energy and growth."

Thus, the answer is: The glucose used for energy and growth of the plants.

15- What is the oxygen used for?
"The oxygen produced is released into the air for us to breath."

Thus, the answer is: The oxygen used for us to breath.


I hope this helps!

Let me know if you have questions about the answer.

 
3 0
3 years ago
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