The mass of Sodium hydroxide which is needed to make 2.500 L of a 2.000 M NaOH solution is 200 grams.
Mass of any substance will be calculated by using their moles as:
n = W/M, where
W = required mass
M = molar mass
Given that, molarity of NaOH = 2M
Volume of NaOH solution = 2.5L
Moles of NaOH will be calculated by using the below equation as:
M = n/V
n = (2)(2.5) = 5 moles
Now we calculate the mass of NaOH of 5 moles as:
W = (5mol)(40g/mol) = 200g
Hence option (4) is correct.
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Answer:
d
Explanation:
Answer:
A) Biotechnology use can lead to a decrease in pesticide and herbicide use, maintaining soil quality.
Explanation:
just took test on edge
Answer:
d
Explanation:
b. results in "smokers breath."
c. can lead to premature aging.
Smoking marijuana can be as unhealthy as smoking cigarettes and can cause cancer.
a. can cause cancer.
Smoking marijuana can be as unhealthy as smoking cigarettes, and it can cause cancer. Marijuana smoke contains many of the same harmful chemicals as cigarette smoke, including tar, carbon monoxide, and carcinogens. These chemicals can damage DNA and lead to the development of cancer.
In addition to cancer, smoking marijuana can also lead to other health problems, such as respiratory problems, heart disease, and lung infections. It can also impair cognitive function and increase the risk of accidents.
The other options, b. results in "smokers breath" and c. can lead to premature aging, are also possible effects of smoking marijuana, but they are not as serious as cancer.
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B. Bright areas appear on the screen
C. Light bends around the edges of the slit
D. Dark areas appear on the screen
The three phenomena occur during a double-slit experiment and support the wave model of light is bright areas appear on the screen, light bends around the edges of the slit, dark areas appear on the screen. Therefore, option B, C and D are correct.
The double-slit experiment, which was conducted to study the characteristics of light in the eighteenth century, has subsequently been found to illustrate the duality of photons as well as the ideas of superposition and quantum interference.
It implies that things we refer to as "particles," like electrons, in some ways mix the traits of both particles and waves. That is quantum physics' renowned wave-particle duality.
The three phenomena occur during a double-slit experiment and support the wave model of light is bright areas appear on the screen, light bends around the edges of the slit, dark areas appear on the screen.
Thus, option B, C and D are correct.
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Answer:BC And D
Explanation:just did the quiz