2) compound because the proportion of its atoms can vary
3) mixture because the proportion of its components is fixed
4) mixture because the proportion of its components can vary
Answer:
4) mixture
Explanation:
The answer is 4) because salt water has 2 properties which are salt and water. Never the less the amount of salt or water you keep adding the substance would always remain as salt water.
66.7 mL
133 mL
167 mL
To solve this we use the equation,
M1V1 = M2V2
where M1 is the concentration of the stocksolution, V1 is the volume of the stock solution, M2 is the concentration ofthe new solution and V2 is its volume.
3 M x V1 = 0.50 M x .400 L
V1 = 0.07 L or 66.67 mL of the 3M sodium hypochlorite solution
The correct answer is the second option given.
Answer:
V2 = 66.67mL
Explanation:
Hello! To calculate this we have to take into account the equation that relates two substances:
M1 * V1 = M2 * V2
We have the concentration and volume of a substance and the concentration of the second. We have to find out the volume.
M1 = 0.5M
V1 = 400mL
M2 = 3M
V2 = (M1 * V1) / M2
V2 = (0.5M * 400mL) / 3M
V2 = 66.67mL
A weather forecast differs from the weather report in that the weather forecast is the application of science and technology to predict the state of the atmosphere for a given location; whereas the weather report is a systematic statement of the existing and usually the predicted meteorological conditions over a particular area.
b. compound
c. solution
d. suspension
e. colloid
The substances that can't be separated into simpler substances or converted into other substances by chemical processes are elements. They are fundamental substances and cannot be changed into other elements through chemical processes. The correct answer to the given question is option a. elements
The answer to your question is a. elements. In chemistry, elements are substances that cannot be separated into simpler substances or converted into another substance by chemical processes.
This is what makes them fundamental substances. Chemical processes can change compounds, solutions, suspensions, and colloids into different substances, but they cannot change an element into a different element. For example, hydrogen is an element that cannot be converted into any other element through chemical processes. It is fundamentally hydrogen.
The correct answer to the given question is option a. elements
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a base
an acid
neutrality
The correct answer is:
neutrality
on the pH scale 7 is neutral above 7 is basic and below 7 is acidic.
Explanation:
The pH is an example of how acidic/basic water is. The scale goes from 0 - 14, with 7 being neutral, pH of less than 7 designates acidity, whereas a pH of greater than 7 intimates a base. pH is really a pattern of the relative amount of free hydrogen and hydroxyl ions in the water.pH is a measure of how acidic/basic water is.
It is neutral because, at this pH, the molar concentrations of Hydroxide and Hydronium are same, therefore the substance is not a base nor an acid.
On the pH scale, a 7 represents neutrality. It is not considered acidic nor basic, but instead, it represents a balanced solution, such as pure water.
On the pH scale, a 7 indicates neutrality. This means that the solution is neither acidic nor basic. The pH scale ranges from 0 to 14, with 7 being the midpoint. Solutions with a pH less than 7 are considered acidic, while those with a pH greater than 7 are considered base or alkaline. So, a pH of 7 is indicative of a perfectly balanced solution, like pure water.
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