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yanalaym [24]
3 years ago
5

Can u pls help me with this question ​

Chemistry
1 answer:
lorasvet [3.4K]3 years ago
8 0

Answer:

b i im pretty sure or a

Explanation:

f y bib0f84f69g85

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A photon has a frequency of 2.68 x 10^6 HZ calculate it's energy
Nat2105 [25]

Answer:

1.77*10^-27

Explanation:

E= hf

=6.63*10^-34 * 2.68*10^6

=1.77*10^-27

8 0
3 years ago
Acid indigestion is sometimes neutralized with an antacid such as magnesium hydroxide (Mg(OH)2). What products will be released
Lunna [17]

Answer: d) MgCl_2 and H_2O​

Explanation:

A double displacement reaction is one in which exchange of ions take place. The salts which are soluble in water are designated by symbol (aq) and those which are insoluble in water and remain in solid form are represented by (s) after their chemical formulas.

A neutralization reaction is a double displacement reaction in which an acid reacts with base to produce salt and water. The H^+ ions from water reacts with OH^- ions from base to give water.

2HCl+Mg(OH)_2\rightarrow MgCl_2+2H_2O

Thus products that will be released when the antacid is mixed with the hydrochloric acid in the stomach are MgCl_2 and H_2O​

3 0
3 years ago
The diagram above shows the repeating groups of atoms that make up two samples. Will the properties of the two samples likely be
Fed [463]
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6 0
3 years ago
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A 6 kg rock is sitting at the edge of a 100 m tall cliff. What is the potential energy of the rock with respect to the ground?
Hatshy [7]
Potential energy can be calculated by the formula Pe=mgh. Plug in your values:

Pe=mgh
Pe=(6 kg)(9.8m/s^2)(100 m)
Pe=5880 kg x m^2/s^2, or 5880 Joules
5 0
3 years ago
What is the formula used to calculate the heat required to warm or cool one phase of matter
Ronch [10]

Answer:

SPECIFIC HEAT CAPACITY

Explanation:

Q = MC DELTA T

q = heat

c = specific heat

T = temperature ( final - initial )

4 0
3 years ago
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