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Chemistry

Delve into the study of matter, its properties, composition, structure, and the changes it undergoes during chemical reactions. Chemistry is the central science connecting other scientific disciplines.

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Q: What is the definition of organic matter
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Q: How many equivalents of Mg^ 2+ are present in a solution that contains 2.60 mol of Mg^ 2
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Q: How many particles are there in a mole of O2
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Q: Is al2o3 a ionic or covalent compound
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Q: Is n2o3 ionic or covalent compound
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Q: Is CH4 a ionic or covalent compound
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Q: Is so3 ionic or covalent compounds
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Q: pure iron is not used to make utensils why
2 answers
Q: What volume of the stock solution (Part A) would contain the number of moles present in the diluted solution (Part B)
2 answers
Q: All landscape change is caused by humans true or false
2 answers
Q: What is the difference between a homogenous and a heterogenous mixture
2 answers
Q: Potassium chloride and water is homogeneous mixture and why
2 answers
Q: Water spills wine a vessel filled completely with water is heated
2 answers
Q: How many moles are in a sample containing 2.71 x 10^24 atoms of iron
9 answers
Q: Which of the following statements about neutrons is true
5 answers
Q: 2.6272 mol of Ne is held at 2.0999 atm and 653.33 °C. What is the volume of its container in liters ____ L
2 answers
Q: The pressure is changed from 500 kPa to 250 kPa. What would you expect the new volume to be if the initial volume is 200 mL
2 answers
Q: Which of the following is an example of a solution Iron metal, iron ore, iron alloy, iron rust
2 answers
Q: Using the phase diagram for H2O, which of the following correctly describes water at 0°C and 1 atm
12 answers
Q: is oxygen poisonous yes or no
2 answers
Q: Is mixture of iodine and water heterogeneous and why
2 answers
Q: What is the mass number of an atom that contains
2 answers
Q: which of the following is not a use for the air-water syringe in four-handed dentistry
3 answers
Q: ice crystals forming on a window a chemical change
2 answers
Q: What colour would green laces look in red light and why
2 answers
Q: Which gas found in the atmosphere is used to make fertilizers and explosiver
2 answers
Q: in titration of 25 mL of the solution containing Cu2+ with the concentration of 0.01 molar , with SCN – (0.01 Molar) , if we use the indicator that changed its color in PSCN= 9. Calculate the error of titration PKSP(CuSCN) =13.4
2 answers
Q: Burning Fat Vs Burning Calories
2 answers
Q: The elements in each____ have the same number of
2 answers
Q: Property of cement
2 answers
Q: Formation of ordinary Portland cement
2 answers
Q: What is the name for the formula Mn2O5
5 answers
Q: Why do I have cold water and no hot water coming in my Fossetts
2 answers
Q: as dry as
3 answers
Q: How do I make a chemical reaction
6 answers
Q: What are the component element of protein
2 answers
Q: What is a good indicator of a person's age
2 answers
Q: Explain a cause-effect relationship. For example, “If you mix ____ and ____ then you get _____.”
2 answers
Q: Which is the most accurate way to read graduated cylinder
3 answers
Q: What is Oxidation number of ZnBr2
2 answers
Q: How many Protons, neutrons, and electrons are in Sulfur-25
2 answers
Q: True or False: A chemical reaction is the rearrangement of atoms you start with to form new compounds
2 answers
Q: Name the change of state that occurs when osmium is heated from 4000©to6000©
2 answers
Q: True or False. The imbalance of electrons in an atom creates a movement of electrons called the electric current
4 answers
Q: which statement best explains why the lady's dressing room is satirical
4 answers
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