Answer: The correct answer is (1).
Explanation:
Concentration of the solute in 1000 g of solution: 5 parts per million
1 part per million = 1 milligram/Liter
Then , 5 parts per million = 5 mg/liter
This means that 5 milligrams of solute is present in 1 liter solution.
1 gram = 1000 milligrams
Then 5 milligram = = 0.005 grams
Hence, 0.005 grams is the total mass of solute in 1000 grams of a solution having a concentration of 5 parts per million.
Parts per million (ppm) is how many parts a certain molecule or compound makes up within the one million parts of the whole solution.
Concentration of the solute in 1000 g of solution: 5 parts per million
1 part per million = 1 milligram/Liter
Then , 5 parts per million = 5 mg/liter
This means that 5 milligrams of solute is present in 1 liter solution.
1 gram = 1000 milligrams
Then 5 milligram = 5 X = 0.005 grams.
Hence, 0.005 grams is the total mass of solute in 1000 grams of a solution having a concentration of 5 parts per million.
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Answer and explanation;
Coal has aromatic hydrocarbons with high molar mass and has a high ratio of carbon to hydrogen. Burning coal produces more soot than burning other fossil fuels does because of it.
Fossil fuel mixtures of hydrocarbons that formed from the remains of plants or animals. Burning fossil fuels increases the amount of carbon dioxide in the atmosphere. This increase may affect temperatures, amounts of rain and sea levels worldwide. Some sulfur and nitrogen are in fossil fuels, and air contains nitrogen.
Coal produces more soot than other fossil fuels as it is a carbon-rich fossil fuel, where some carbon atoms form soot particles during burning. The combustion of coal is less efficient, producing more particulates and carbon dioxide per unit energy output, thus contributing to air pollution and global warming.
Coal typically produces more soot than other fossil fuels when burned due to its composition. Unlike natural gas or oil, coal is a carbon-rich fossil fuel. When this carbon burns, it reacts with oxygen to form carbon dioxide, but not all carbon atoms complete this reaction. Some form tiny carbon particles or soot instead. These soot particles consist of amorphous carbon, which has a disorganized and complex structure, leading to the dark, dust-like quality of soot.
Historically, the burning of coal was ubiquitous in the Industrial Age, leading to severe air pollution with coal soot covering surfaces in industrial cities. This is because the combustion of coal is less efficient than other fossil fuels, producing more particulates and carbon dioxide per unit energy output. Consequently, the combustion of fossil fuels, and coal in particular, contributes to the greenhouse effect and global warming. In fact, coal-fired power plants produce the greatest amount of CO₂ per unit energy output compared to natural gas or oil, making it the least efficient fossil fuel in terms of greenhouse gas emissions.
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When dynamite explodes, it releases a large amount of light and heat. This is an example of _____.
slow combustion
rapid combustion
an exothermic reaction
an endothermic reaction
a chemical change
a physical change
Answer
Rapid Combustion
Explanation:
An explosion is a combustion and a quick reaction, That makes it rapid
D. CIF3
got it correct on test <3
Explanation:
Hydrogen's placement on the periodic table is a subject of debate among chemists. It's in Group 1 because it has one electron in its outermost shell, like the alkali metals. However, it's not a typical alkali metal and has some nonmetallic properties, like being a diatomic gas. Its unique position results from historical reasons and its ability to both lose and gain electrons, making it difficult to classify as a typical metal or nonmetal. Hydrogen's placement reflects its anomalous nature and the periodic table's limitations in fully capturing its properties.
Answer:
d = 1.85 g/cm³
Explanation:
Given data:
Volume of sulfuric acid = 35.4 mL
Mass of sulfuric acid = 65.14 g
Density of sulfuric acid = ?
Solution:
1 ml = 1cm³
Formula:
d = m/v
d = 65.14 g / 35.2 cm³
d = 1.85 g/cm³