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Anestetic [448]
4 years ago
10

If a system has 275 kcal of work done to it, and releases 5.00 × 10 2 kJ of heat into its surroundings, what is the change in in

ternal energy ( Δ E or Δ U ) of the system?

Chemistry
1 answer:
Alborosie4 years ago
8 0

Answer:

attached below

Explanation:

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prisoha [69]

Answer:

They tenderize the product by coating and weakening the gluten bonds within the structure.

Even though they contain little or no moisture, they provide the illusion of wetness. ...

They enable browning.

They help move heat through the product, perpetuating the baking process.

Explanation:

4 0
3 years ago
During an experiment vinegar was added to baking soda. The following observations were recorded.
harina [27]

Answer:

The change that took place is a chemical change as a chemical reaction occurs.

Vinegar = CH_3COOH

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Reaction:

CH_3COOH + NaHCO_3 \longrightarrow CH_3COONa + H_2CO_3

4 0
3 years ago
What is the hydrogen ion concentration of a solution with pH = 8.75 ?
Tom [10]

Answer:

The answer is 1.778*10^-9

Explanation:

Using the formula

pH = -log[H^+]

Since the pH of the solution has been given to be 8.75,

Therefore,

8.75= -log [H^+]

Let's take H^+ to be x

8.75= -log x

Let's look for x, since the log is in base 10

X = 10^-8.75

X = 1.778 * 10^ -9

Therefore, H^+ =1.778 *10^-9

4 0
3 years ago
How do you figure out the # of<br> neutrons?
Colt1911 [192]

Answer:

Subtracting the number of protons from the atomic mass.

5 0
3 years ago
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Please help! I'd appreciate it.
jonny [76]

I believe your answer is the second option.

7 0
3 years ago
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