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2 years ago

Your friend had an upset stomach caused by indigestion. His mother explained to him

Chemistry

1 answer:

ddd [48]2 years ago

4 0

Answer:

because it may cause burn that causes acid to build up which causes you to keep having an upset stomach

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Imagine that you are playing a game of Clue in which Mrs. White is killed in the conservatory. You have a device in each room to

myrzilka [38]

Answer:

Mr. Plum killed Mrs. White.

Explanation:

1) Wavelengths for the different light colors (visible light) and related character:

Color Wavelength related character

Violet 380–450 nm ← Professr Plum

Blue 450–485 nm ← Mrs. Peacock

Cyan 485–500 nm

Green 500–565 nm ← Mr. Green

Yellow 565–590 nm ← Colonel Mustard

Orange 590–625 nm

Red 625–740 nm ← Miss Scarlet

2) At the time of the murder, the spectrometers recorded:

a) In the dining room: 520 nm.

520 nm is in the range 500 - 565 nm, which is the range for green color, so Mr. Green was in the dining room and is no more a suspect.

b) In the lounge and study: lower frequencies.

Since frequency and wavelength are inversely related, the wavelengths in the longe and study have to be of yellow and red colors, which are the only two with longer wavelengths from the option given.

Then, Mustard and Scarlet are not criminal.

c) In the library: the second shortest wavelength of the five recorded.

The second shortest wavelength, as per the table, is that of blue color. So, Mrs. Peacock is not the killer.

The only left option is violet, so Mr. Plum is the only who could be at the conservatory and he is the killer.

7 0

3 years ago

Which feature forms at convergent

geniusboy [140]

B trench

Explanation:

The feature found at most convergent margins is a trench.

A trench is a large depression that typifies most convergent margins.

Oceanic trenches are natural topographic depressions found on the sea floor.
These depressions forms where two plate boundaries converges.
The denser one slides beneath the less dense one into the asthenosphere below.
This is called a subduction zone.
The margin between the two plates that are depression is a trench.

learn more:

Lithosphere brainly.com/question/2998243

#learnwithBrainly

8 0

3 years ago

0. A liquid solution of LiCl in water at 25°C contains 1 mol of LiCl and 7 mol of water. If 1 mol of LiCl⋅3H2O(s) is dissolved i

kupik [55]

Answer:

19.488 kJ

Explanation:

The overall reaction mechanism shows the reaction between LiCl and H₂O

$LiCl.3H_2O ------> Li +\frac{1}{2} Cl_2+3H_2+\frac{3}{2} O_2$ -------- (1)

$2Li+Cl_2+10H_2O ----->LiCl.10H_2O$ -------- (2)

$3H_2+\frac{3}{2}O_2 -----> 3H_2O$ --------- (3)

$LiCl.7H_2O ------> Li + \frac{1}{2} Cl_2+7H_20$ ---------- (4)

The overall reaction =

$LiCl.7H_2O +LiCl.3H_2O ------> 2LiCl.10H_2O$

The heat effects of the above reactions from 1-4 respectively are in the order ; 11311.34 kJ, -857.49 kJ, -873.61 kJ and 439.288kJ respectively

The overall enthalpy change is:

$\delta H = \delta H _{LiCl.3H_2O}+\delta H_{3H_2O} + \delta H_{2(LiCl.5H_2O)} + \delta H _{liCl.7H_2O}$

$\delta H =Q$ at constant pressure;

Thus; Q = 1311.3 (kJ) 857.49 (kJ) -873.61 (kJ) + 439.288 (kJ)

Q = 19.488 kJ

Thus, the heat effect = 19.488 kJ after the addition of 1 mol of LiCl⋅3H2O(s)

4 0

3 years ago

According to Frank, what is the “10 second rule"?

Lelechka [254]

Answer:

The first option, aka Opick it up off the gound within 10 seconds, and it's o.k. to eat

Explanation:

The 10 second rule is a rule when you drop foods, but if you get it off the floor under 10 seconds, you can eat it.

Did you know that food picked up under 10 seconds and after 10 seconds has almost the same number of bacterias? The 10 second rule is basically worthless.

4 0

2 years ago

3. Which of the following mass measurements is the smallest?

kogti [31]

It’s going to be ( A) because kg is the lowest measurement for the mass

8 0

3 years ago