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skelet666 [1.2K]
3 years ago
14

Which of these is NOT an example of physical change?

Chemistry
1 answer:
forsale [732]3 years ago
5 0

Answer:

D. A change of appearance

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A relationship between two organisms that benefits both organisms is called
Alex777 [14]

Answer:

Mutualism

Explanation:

A relationship in which both benefit

3 0
2 years ago
Are there any vegetarian Italian Sausages?
Flura [38]
Yes, there are vegetarian italian sausages. One example is the Satanic sausage, which is prepared from dough, beans, spices, tomato, yeast, etc. But, yes, majority or I would say almost all of the Italian sausages are non-vegetarian sausages itselves.
6 0
3 years ago
How to find the Ka of an acid?
bonufazy [111]
We know that acids have a pH of under 7. 

We also need to:
Set up an ICE table for the chemical reaction.  Solve for the concentration of H3O+ using the equation for pH  Use the concentration of H3O+ to solve for the concentrations of the other products and reactants.
7 0
3 years ago
You burn a 3.4 g cube of tofu to warm 12 g of water, which increases the temperature of the water 7 °C. How many calories of hea
Murrr4er [49]

Answer:

Water absorbs 84cal.

Explanation:

The given information about water is:

- mass of water (m): 12g

- change in temperature (ΔT): 7°C

With the given information, and the specific heat of water (c=1cal/g.°C), we can calculate the aeat that water absorbs, using the heat formula:

\begin{gathered} Q=m*c*\Delta T \\ Q=12g*1\frac{cal}{g*\degree C}*7\degree C \\ Q=84cal \end{gathered}

So, water absorbs 84cal.

4 0
1 year ago
Select all the correct answers.
Lera25 [3.4K]

The correct answers :

It increases with a decrease in the concentration of H₂(g).

It decreases with an increase in the concentration of S₂(g).

It decreases with an increase in the concentration of H₂(g).

<h3 /><h3>Further explanation</h3>

Forward reaction : rate to form product

In equilibrium :

The product decreases ⇒ system will move from left to right(forward reaction)

The product increases ⇒ system will move from right to left(reverse reaction)

6 0
2 years ago
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