Archive day

January 17, 2026

415 public questions were asked on this day.

← Jan 16 Jan 18 →
Carbonic acid (H2CO3) forms when carbon dioxide (CO2) dissolves in water according to this equation: CO2 + H2O→H2CO3 How many moles of CO2 must dissolve in an excess of water to produce 2 moles of H2CO3? Responses 1 mol...
Asked by ruth 1 answer
Methane (CH4), ammonia (NH3), and oxygen can react to form hydrogen cyanide (HCN) and water according to this equation: 2CH4+2NH3+3O2→2HCN+6H2O About how many grams of methane are required to produce 1 mole of HCN? Respo...
Asked by ruth 1 answer
Hydrogen gas and nitrogen gas can react to form ammonia according to this equation: N2(g)+3H2(g)→2NH3(g) How many liters of nitrogen gas are required to produce 2 moles of NH3(g)? One mole of gas occupies 22.4 liters und...
Asked by ruth 1 answer
Which equation represents an incorrectly balanced chemical equation? Responses 2ZnS(s)+2HCl(aq)→4ZnCl2(aq)+H2S(g) 2 uppercase Z lowercase n uppercase S open parenthesis lowercase s close parenthesis plus 2 uppercase H C...
Asked by ruth 1 answer
Which equation describes a single-replacement reaction? Responses Cl2(g) + 2Kl(s) → 2KCl(s) + l2(g) uppercase C lowercase l subscript 2 end subscript open parenthesis lowercase g close parenthesis plus 2 uppercase K l op...
Asked by ruth 1 answer
Which feature of a chemical equation represents the law of conservation of matter? Responses chemical formulas chemical formulas coefficients coefficients balanced equation balanced equation subscripts subscripts
Asked by ruth 1 answer
How many electrons are depicted in the electron dot diagram of an electrically neutral oxygen atom? Responses six six five five two two eight
Asked by ruth 1 answer
Which property are nonmetals most likely to have? Responses high boiling point high boiling point easily conducts electricity easily conducts electricity lower melting points lower melting points malleable
Asked by ruth 1 answer
Which element is the most electronegative? Responses chlorine chlorine potassium potassium francium francium astatine astatine
Asked by ruth 1 answer
In which group of the periodic table do you find halogens? Responses 7A 7A 2A 2A 8A 8A 1A 1A
Asked by ruth 1 answer
An atom of magnesium has an atomic number of 12 and a mass number of 24. How many protons plus neutrons are in the nucleus? Responses 12 12 24 24 36 36 48 48
Asked by ruth 1 answer
Which subatomic particles are found outside the nucleus of an atom? Responses protons and neutrons protons and neutrons electrons electrons neutrons neutrons protons protons
Asked by ruth 1 answer
A miner finds a small mineral fragment with a volume of 5.74 cm³ and a mass of 14.4 g. What is the density of the mineral fragment? Responses 2.00 g/cm³ 2.00 g/cm³ 2.51 g/cm³ 2.51 g/cm³ 5.00 g/cm³ 5.00 g/cm³ 10.0 g/cm³ 1...
Asked by ruth 1 answer
Which chemical formula represents both an element and a molecule? Responses NO2 uppercase N O subscript 2 end subscript Ar uppercase A lowercase r Cl2 uppercase C lowercase l subscript 2 end subscript KCl
Asked by ruth 1 answer
What type of chemist studies how living things get energy from food? Responses physical chemist physical chemist inorganic chemist inorganic chemist organic chemist organic chemist biochemist
Asked by ruth 1 answer
The characters Amanda Gorman (poet), Maya Angelou (poet), Mercedes (From The Call Of The Wild), and Walter MItty(From The Secret Life of Walter Mitty) are all at a game night. Where will the game night take place? Why? W...
Asked by ISSC 1 answer
What does Walter Mitty look like? What are some of his personality traits? (From The Secret Life Of Walter Mitty) Respond in 2+ sentences
Asked by ISSC 1 answer
Is Mercedes a protagonist or antagonist? How do you know? (From The Call of The Wild) Respond in 2+ sentences
Asked by ISSC 1 answer
What does Mercedes look like, and what are some of her personality traits? (From The Call of The Wild)
Asked by ISSC 1 answer
What are some negative traits of Mercedes? (from The Call of The Wild)
Asked by ISSC 1 answer
What are some things you like about Mercedes (From The Call of The Wild)
Asked by ISSC 1 answer
What does Amanda Gorman look like? What are some character traits that she has?
Asked by ISSC 1 answer
Is Maya Angelou a protagonist or antagonist?
Asked by ISSC 1 answer
What does Maya Angelou look like, and what are some of her personality traits?
Asked by ISSC 1 answer
What are a few things you dislike about Maya Angelou?
Asked by ISSC 1 answer