• Can you make water stable?

    9 answers · 2 days ago
  • Chemistry help? Thanks?

    The mass of a neutron is Select one: a. about the same as that of a proton. b. about the same as that of an electron. c. double that of a proton. d. double that of an electron. An atom of potassium has 19 protons and 20 neutrons. What is its mass number? Select one: a. 19 b. 20 c. 39 d. 10 A nuclear particle that... show more
    The mass of a neutron is Select one: a. about the same as that of a proton. b. about the same as that of an electron. c. double that of a proton. d. double that of an electron. An atom of potassium has 19 protons and 20 neutrons. What is its mass number? Select one: a. 19 b. 20 c. 39 d. 10 A nuclear particle that has about the same mass as a proton, but with no electrical charge, is called a[n] Select one: a. nuclide. b. neutron. c. electron. d. isotope. The average atomic mass of an element is the average of the atomic masses of its Select one: a. naturally occurring isotopes. b. two most abundant isotopes. c. nonradioactive isotopes. d. artificial isotopes. The atomic sublevel with the next highest energy after 4p is Select one: a. 4d. b. 4f. c. 5p. d. 5s. How many valence electrons are present in silicon? Select one: a. One b. Two c. Four d. Six How does the energy of an electron change when the electron moves closer to the nucleus? Select one: a. It decreases. b. It increases. c. It stays the same. d. It doubles. How many half filled orbitals are in a sulfur atom (atomic number 16)? Select one: a. 0 b. 1 c. 2 d. 3
    4 answers · 4 hours ago
  • How many ml in half a pint of milk?

    4 answers · 1 day ago
  • A scientific law is _____.?

    A. a concise statement summarizing the results of numerous observations and experiments B. a theory that has gained universal acceptance by the scientific community C. a detailed statement explaining the results of numerous observations and experiments D. a detailed statement summarizing the conclusions drawn... show more
    A. a concise statement summarizing the results of numerous observations and experiments B. a theory that has gained universal acceptance by the scientific community C. a detailed statement explaining the results of numerous observations and experiments D. a detailed statement summarizing the conclusions drawn from numerous hypotheses
    7 answers · 3 days ago
  • Which substance was developed by chemists? (A) nylon (B) aspirin (C) silk?

    Best answer: Substances from chemists.....

    Silk is made by moth larvae, aspirin is derived from tree bark, nylon was made initially in a laboratory, but aspirin and even synthetic silk can be produced by chemists. Of the three, only nylon has no naturally occur source.
    Best answer: Substances from chemists.....

    Silk is made by moth larvae, aspirin is derived from tree bark, nylon was made initially in a laboratory, but aspirin and even synthetic silk can be produced by chemists. Of the three, only nylon has no naturally occur source.
    8 answers · 4 days ago
  • Chemistry homework, need help!?

    Calculate the mass in grams for a sample of titanium that loses 1.36×104 J when it cools from 185 ∘C to 36 ∘C. I got 168g but my online homework says that I either rounded incorrectly or used the wrong number of sig figs. (I also typed in 169 and 167) Thank you!
    Calculate the mass in grams for a sample of titanium that loses 1.36×104 J when it cools from 185 ∘C to 36 ∘C. I got 168g but my online homework says that I either rounded incorrectly or used the wrong number of sig figs. (I also typed in 169 and 167) Thank you!
    4 answers · 1 day ago
  • In which of the following is the name and formula paired correctly?

    Best answer: (C)iron(III) phosphate, FePO4
    Best answer: (C)iron(III) phosphate, FePO4
    5 answers · 3 days ago
  • Please Help ASAP!!!!!!!!!!!!!!!?

    A certain organic compound in the vapor state has a density of 9.81 g/L at 95°C and 758 torr. What is the molecular weight? 297 g/mol and C6H12Cl6 49.5 g/mol and CH2Cl 198 g/mol and C4H8Cl4 99.1 g/mol and CH2Cl So I did the problem two different times and got the molecular weight equaling both A and D.
    A certain organic compound in the vapor state has a density of 9.81 g/L at 95°C and 758 torr. What is the molecular weight? 297 g/mol and C6H12Cl6 49.5 g/mol and CH2Cl 198 g/mol and C4H8Cl4 99.1 g/mol and CH2Cl So I did the problem two different times and got the molecular weight equaling both A and D.
    5 answers · 2 days ago
  • Calculate the mass in grams for a sample of aluminum that absorbs 9.70 kJ when heated from 16.0 ∘C∘C to 25.2 ∘C.?

    Best answer: (9.70 x 10^3 J) / (897 (J/kg·°C)) / (25.2 - 16.0)°C = 1.1754 kg = 1175 grams Al
    Best answer: (9.70 x 10^3 J) / (897 (J/kg·°C)) / (25.2 - 16.0)°C = 1.1754 kg = 1175 grams Al
    4 answers · 2 days ago
  • Is acid demonic?

    4 answers · 2 days ago
  • Help with Chemistry questions please?

    Which of the following substances is an element? Select one: a. Baking soda b. Iron c. Salt d. Sugar The chemical symbol for iron is ____. Select one: a. fe b. FE c. Fe d. Ir During what type of process are the atoms that make up the substances involved actually rearranged? Select one: a. For chemical changes... show more
    Which of the following substances is an element? Select one: a. Baking soda b. Iron c. Salt d. Sugar The chemical symbol for iron is ____. Select one: a. fe b. FE c. Fe d. Ir During what type of process are the atoms that make up the substances involved actually rearranged? Select one: a. For chemical changes only. b. For physical changes only. c. For chemical and physical changes. Chemical properties Select one: a. include changes of state of a substance. b. include mass and color. c. include changes that alter the identity of a substance. d. can be observed without altering the identity of a substance. Which is a chemical property of copper? Select one: a. has a boiling point of 2567° C b. reacts in air to form a green layer c. has the symbol Cu d. is a solid at room temperature A physical change occurs when a Select one: a. peach spoils. b. copper bowl tarnishes. c. bracelet turns your wrist green. d. glue gun melts a glue stick. The triple point of a substance is the temperature and pressure conditions at which Select one: a. density is greatest. b. states of a substance coexist at equilibrium. c. equilibrium cannot occur. d. kinetic energy is at a minimum. Which are the first particles to evaporate from a liquid? Select one: a. particles with the lowest kinetic energy b. particles with the highest kinetic energy c. particles below the surface of the liquid d. All particles evaporate at the same rate.
    6 answers · 3 days ago
  • If a single molecule does not have a temperature, what does temperature measure?

    Best answer: ... temperature measures the average transferable kinetic energy of a sample of material. since a graph of the KE's of molecules in a sample forms a bell curve, the KE of one molecule has little meaning as far as temperature goes. individual molecules in samples at greatly different temperatures can have... show more
    Best answer: ...
    temperature measures the average transferable kinetic energy of a sample of material.

    since a graph of the KE's of molecules in a sample forms a bell curve, the KE of one molecule has little meaning as far as temperature goes.
    individual molecules in samples at greatly different temperatures can have individual molecules with the same KE.

    When you get a good response,
    please consider giving a best answer.
    This is the only reward we get.
    You may have to wait an hour to award BA.
    4 answers · 2 days ago
  • Is the atomic bomb the most powerful bomb?

    Best answer: Bomb strength.... 1. Hydrogen bombs (aka fusion bombs) are the most powerful. 2. Atomic bombs (aka fission bombs) are less powerful than hydrogen bombs, but will also ruin your day 3. MOAB (aka chemical bomb) is the most powerful non-fission bomb, but is several orders of magnitude less powerful than an atomic... show more
    Best answer: Bomb strength....

    1. Hydrogen bombs (aka fusion bombs) are the most powerful.
    2. Atomic bombs (aka fission bombs) are less powerful than hydrogen bombs, but will also ruin your day
    3. MOAB (aka chemical bomb) is the most powerful non-fission bomb, but is several orders of magnitude less powerful than an atomic bomb. ... MOAB = "mother of all bombs", more correctly called a GBU-43/B Massive Ordnance Air Blast Bomb
    4 answers · 3 days ago
  • What is air why can we not see it?

    6 answers · 5 days ago
  • Can you stabilize water?

    5 answers · 4 days ago
  • Why do we use pH scale instead of pOH scale?

    Best answer: Why do we use pH scale instead of pOH scale?
    I doubt it.

    ~Peanuts2345
    Best answer: Why do we use pH scale instead of pOH scale?
    I doubt it.

    ~Peanuts2345
    5 answers · 4 days ago