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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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Questions
Q: Element. All helium atoms have 2 protons. What is the atomic number of helium
5 answers
Q: How many CI atoms are in Zn(CIo3)2
7 answers
Q: The water in a barrel weights 381.8 pounds if a gallon of water weights about 8.3 pounds how many gallons are in the barrel
2 answers
Q: How many dots should be placed around argon in a dot diagram
2 answers
Q: What ion does sulfur have
1 answer
Q: Reaction to convert ethyl bromide into methane
1 answer
Q: The main reason for learning to correctly pour fluids in a laboratory is to conserve costly chemicals. true or false
1 answer
Q: Product of H2 plus O2
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Q: In the reaction MgCI2 plus 2KOH Mg(OH)2 plus 2KCI if 6 moles mgci2 are added to 6 moles koh which is the limiting reagent
8 answers
Q: What is the symbol for a chlorine ion
1 answer
Q: In the redox reaction AgNO3 plus Na NaNO3 plus Ag which element has been oxidized
3 answers
Q: What is the name of the particle that orbits the nucleus of an atom
5 answers
Q: Potassium chloride (KCl) is a compound formed when K transfers an electron to Cl. What kind of bond holds KCl together
4 answers
Q: Water ionizes into hydrogen ions and hydroxide ions. It has a value.
2 answers
Q: What is the difference between charcoal graphite and diamond
2 answers
Q: Is pepperoni pizza an element or a compound or heterogeneous mixture or a homogeneous mixture
1 answer
Q: Which one of the following compounds is copper(I) chloride
1 answer
Q: Would the oils and sweat make a homogeneous mixture or a heterogeneous mixture Explain your answer
2 answers
Q: How do you convert acetic acid to methylamine
1 answer
Q: Which of the following elements has the same Lewis dot structure as phosphorus
2 answers
Q: What are the limitations of infrared spectroscopy
6 answers
Q: What is the fingerprint region in infrared spectroscopy
2 answers
Q: Is battery acid ionic
1 answer
Q: If you choose to change the pH of a solution very slightly should you add a strong acid or weak acid
2 answers
Q: What is the overall charge of ionic compound
2 answers
Q: How do the oxygen (O2) and carbon dioxide (CO2) levels change over time
1 answer
Q: How do differences in air pressure cause smoke to rise up a chimney
1 answer
Q: Is smog an element or a compound
2 answers
Q: Metallic bonds are
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Q: Cd solid reacts with 2HBr aq to produce
2 answers
Q: Total number of atoms in one molecule in table sugar
1 answer
Q: What does zncl stand for
1 answer
Q: Three other gaseous elements that probably will not burn either
9 answers
Q: The number of elements in hydrogen peroxide
1 answer
Q: Total number of atoms in one molcule in epsom salts
1 answer
Q: Which group of metals is charterised by a single valence electron and very active atoms
2 answers
Q: Epinephrine (adrenaline) is 59.0 carbon 7.1 hydrogen 26.2 oxygen and 7.7 nitrogen by mass. What is the empirical formula of epinephrine if its molar mass is 180 gmol
2 answers
Q: Styrene has the empirical formula CH. It has a molar mass of 104 g. What is the multiplier to get the molecular formula
2 answers
Q: What does water contains
3 answers
Q: Gold has a shiny metallic
1 answer
Q: What is the common name for CaCl2
2 answers
Q: The chemical combination of two or more different atoms in fixed amounts is called
4 answers
Q: You are using a pipette that has a mark every 0.1 mL. If you want to measure 5.15 mL of liquid using this pipette to what level should you fill the pipette
2 answers
Q: If an atom such as hydrogen is able to form covalent bond describe what happens when the electrons shells of two atoms overlap
1 answer
Q: A family of elements that has two electrons in its outer energy level is
2 answers
Q: What is the oxidation number of carbon in methanol
1 answer
Q: Of the following elements which one would have the largest ionization energy Hydrogen (H atomic 1) Cesium (Cs atomic 55) Sodium (Na atomic 11) Potassium (K atomic 19)
2 answers
Q: Describe energy in an exothermic reaction
8 answers
Q: A three-demensional medium that has components of clay glass plastic bronze metal wood stone or wire is called what
1 answer
Q: A substance has a pH of 7. Which of the following descriptions matches this pH
3 answers
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