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Allisa [31]
3 years ago
14

The answer?? To all of them please

Chemistry
1 answer:
natka813 [3]3 years ago
6 0
1. Balanced
2. Not balanced because there are 3 hydrogen on one side and 2 on the other.
3. Balanced
4. Not balanced because one side has 1 Iron and the other has 4 Iron.
5. Balanced
6. Not balanced because there are 2 hydrogen on one side and 3 on the other
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A new process converts potential energy of an object to kinetic energy. Neither work nor eat is added to the system. No reaction
blagie [28]

Answer:

Change in height of the object

Explanation:

Change in height of the object

Since ,

We know potential energy can be written as mgh where

P.E. = mgh

M = mass ,

g = gravity constant

h = height

Kinetic energy can be written as 0.5 mv²

So , the Potential energy = kinetic energy

Then ,

velocity of object = √2 gh

Since g is a constant ,

Hence ,

Height of object will determine the velocity.

5 0
4 years ago
1. What type of circuit is in the diagram?<br> parallel circuit<br> series circuit
devlian [24]

Answer:

A series circuit is defined as the circuit in which a number of resistances are connected one after the other.. In a series circuit, the flow of current follows a single path.

A parallel circuit is defined as the circuit in which a number of resistances are linked across each other in such a way that one terminal of each resistance is connected to form a junction point while the remaining end is also connected to form another point.

You havent added the diagram so i cant tell you the answer, but i added the definition of each circuit, see if that helps!

5 0
3 years ago
highlight why it is important to evaluate important assessment studies before any development could be made on the environment​
Kay [80]

Answer:

Essentially, an EIA is designed to identify the potential risks of a project (e.g., infrastructure development such as a dam) to environmental and human well-being and identify measures to eliminate and/or mitigate these risks. This can be done by replacing and/or modifying planned activities to reduce impacts

Explanation:

6 0
3 years ago
If a wave bounces off a surface at an angle this is an example of _______________.
kirill115 [55]

answer should be Reflection

6 0
3 years ago
If a buffer has an initial pH of 6.34 and the acid has a Ka of 3.46 × 10-4, what is the ratio of conjugate base to weak acid in
Sloan [31]

Answer: The ratio of conjugate base to weak acid in the buffer system is 758 : 1

Explanation:

The dissociation constant for  acid = K_a=3.46\times 10^{-4}

pH = 6.34

First we have to calculate the value of pK_a.

The expression used for the calculation of pK_a is,

pK_a=-\log (K_a)

Now put the value of K_a in this expression, we get:

pK_a=-\log (3.46\times 10^{-4})

pK_a=3.46

Now we have to calculate the ratio of conjugate base to weak acid in the buffer system

Using Henderson Hesselbach equation :

pH=pK_a+\log \frac{[\text {conjugate base}]}{[Acid]}

Now put all the given values in this expression, we get:

6.34=3.46+\log \frac{[\text {conjugate base}]}{[Acid]}

\frac{[\text {conjugate base}]}{[Acid]}=758

Therefore, the ratio of conjugate base to weak acid in the buffer system is 758: 1

3 0
4 years ago
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