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zlopas [31]
3 years ago
11

Christy is a forensic scientist. She is given a white powder and asked to determine whether it’s sugar. She analyzes the white p

owder with a mass spectrometer in her lab. The test results reveal that the substance has a different molecular mass than sugar. What do these test results say about the initial hypothesis and what would be a reasonable next step for Christy’s investigation?
Chemistry
1 answer:
leva [86]3 years ago
6 0

Answer:

A. is not

B.  incorrect

C. identify substances that have the measured molecular mass

Explanation:

Since in the question it is mentioned that the Christy who is a forensic scientist and she gave a white powder and identify whether it is a sugar or not when she tested she seen that the molecular mass is different as compared with the sugar

So here it can be concluded that the white powder does not show a sugar that means it is not a sugar so automatically the hypothesis of Christy is wrong. And, the next step is to track the substance that shows the molecular mass i.e. measured

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A soda is made of 5% CO2 gas, 10% powdered drink mix, and 80% water.
Aleonysh [2.5K]

Answer:

Water is a solvent, and CO2 gas and the powdered drink mix are both solutes.

Explanation:

In order to successfully answer this question, we need to remember that solutions consist of solutes and solvents.

Solutes are components of solutions that are dissolved (typically ionic salts if we have a polar solvent), while solvents are fluids (usually liquids) that provide a medium for the solutes to dissolve (water is the most common polar solvent for ionic salts, for example).

As a general rule, solvent is used in great excess, that is, it makes the greatest percentage in terms of mass of a particular solution.

Applying the theory above for this problem, notice that the greatest percentage of this solution belongs to water, besides, water is a common solvent in general. Thus, it is our solvent.

Also, solution would only have one solvent and one or several solutes. This leaves the two other components, carbon dioxide and powdered drink mix, as our solutes, as they have a lower percentage than our solvent.

8 0
4 years ago
Compared with surface currents, deep currents are a. colder and less dense. c. warmer and denser. b. warmer and less dense. d. c
Katyanochek1 [597]

The correct answer is option d, that is, colder and denser.  

The surface currents refer to the currents at the surface of the water, to a few hundred meters deep, while deep currents refer to the currents when the density increases to a greater extent.  

The surface current takes place close to the surface and move horizontally. This kind of currents are caused by global winds, an example of surface current is Gulf Stream. On the other hand, deep current takes place in the ocean and is affected by the density of water, temperature, and salinity. An example is Antarctica Bottom Water. In comparison to surface currents, deep currents are colder and denser.  


5 0
3 years ago
Read 2 more answers
What is the volume occupied by 112.0 grams of mercury
-BARSIC- [3]

Answer:

V= 8.235 ml

Explanation:

The man above me copied me from the comments

I did it >:C

8 0
3 years ago
What mass of KCL is contained in .350 M solution of KCL?
Sergio039 [100]
The mass of KCl per volume of solution=.35X(35.5+39)=26.075g/L
5 0
4 years ago
Gamma-ray bursters emit pulses of gamma rays with high energies. The frequency of the most energetic pulses has been measured at
Novosadov [1.4K]

The wavelength of these gamma rays will be  1x110^{-13} m.

How do you define wavelength?

The distance between two successive troughs or crests is known as the wavelength. The peak of the wave is the highest point, while the trough is the lowest.

The wavelength is also defined as the distance between two locations in a wave that have the same oscillation phase.

The length of a wave is measured in its propagation direction. The wavelength is measured in meters, centimeters, nanometres, and other units since it is a distance measurement.

The relationship between the wave's wavelength, frequency, and speed is given as

wavelength = speed of light ÷ frequency

wavelength = \frac{3 X10^8}{3.0 X10^{21}}

wavelength = 1x10^{-13} m

Hence the wavelength of these gamma rays will be 1 X 10^{-13}m.

To learn more about the wavelength refer to the link;

brainly.com/question/7143261

#SPJ1

7 0
2 years ago
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