Emiko

Popular questions and responses by Emiko
  1. Physics

    During launches, rockets often discard unneeded parts. A certain rocket starts from rest on the launch pad and accelerates upward at a steady 3.45 m/s2 . When it is 250 m above the launch pad, it discards a used fuel canister by simply disconnecting it.

    asked on January 29, 2019
  2. chemistry

    What type of reaction does the following equation represent? AgNO3 + NaCl ---> AgCl + NaNO3 A. Single-displacement reaction B. Synthesis C. Combustion D. Double-displacement reaction

    asked on September 13, 2014
  3. Math

    You mix soda water, fruit punch concentrate, and ginger ale in the ratio of 1 : 2 : 5 to make fruit punch. How many pints of each ingredient should you use to make 4 gallons of fruit punch?

    asked on October 24, 2019
  4. chemistry

    What is the electronegativity difference for a bond between potassium and iodine? A. 3.3 B. 0.4 C. 4.6 D.1.7

    asked on September 13, 2014
  5. chemistry

    According to Boyle, pressure and volume of a confined gas are ____ proportional, and according to Charles, the volume of a gas at a constant pressure is____ proportional to its Kelvin temperature. A. directly; inversely B. directly; not C. inversely;

    asked on September 14, 2014
  6. chemistry

    which of the following is true regarding the transition elements? A. Multiple oxidation states resulting from the involvement of d electrons in bonding is a characteristic of transition elements. B. Most transition elements have lower melting and boiling

    asked on September 11, 2014
  7. chemistry

    Which of the following statements correctly describes energy levels? A. Electrons can never move to a higher or lower energy level. B. In its outermost energy level, oxygen has 4 valence electrons C. The second energy level holds a maximum of eight

    asked on September 2, 2014
  8. Math

    There are 12 boys and 10 girls in your gym class. If 6 boys joined the class, how many girls would need to join for the ratio of boys to girls to remain the same?

    asked on October 24, 2019
  9. chemistry

    What mass of sulfur has to burn to produce 4.5L SO2 at 300°C and 101 kPa in the following reaction? S(s) + O2(g) -> SO2(g) A. 3.07 g S B. 41.0 g S C. 13.5 g S D. 68.8 g S

    asked on September 14, 2014
  10. chemistry

    Which element's atomic radius changes the most in size when it becomes ionized? A. Fluorine B. Lithium C. Sodium D. Chlorine

    asked on September 13, 2014
  11. chemistry

    _____ was responsible for first grouping elements into triads based on similar properties. A. Döbereiner B. Moseley C. Dalton D. Mendeleev

    asked on September 4, 2014
  12. chemistry

    What type of reaction does the following equation represent? AgNO3 + NaCl ---> AgCl + NaNO3 A. Single-displacement reaction B. Synthesis C. Combustion D. Double-displacement reaction

    asked on September 13, 2014
  13. chemistry

    which pairing below does not correctly match the scientist with the contribution to the understanding of the atom A. Proust and the realization that the elements of compounds are found in certain proportions by mass B. Thomson and the law of definite

    asked on September 7, 2014
  14. chemistry

    Which of the following is true? A. Group 1 elements are more reactive than the group 2 elements because they have more valence to lose. B.Lithium is the least reactive element in group, because its valence electron is held more tightly than the others in

    asked on September 13, 2014
  15. chemistry

    What mass of sulfur has to burn to produce 4.5L SO2 at 300°C and 101 kPa in the following reaction? S(s) + O2(g) -> SO2(g) A. 3.07 g S B. 41.0 g S C. 13.5 g S D. 68.8 g S

    asked on September 14, 2014
  16. chemistry

    What type of reaction does the following equation represent? AgNO3 + NaCl ---> AgCl + NaNO3 A. Single-displacement reaction B. Synthesis C. Combustion D. Double-displacement reaction

    asked on September 13, 2014
  17. chemistry

    What is the molecular mass of potassium hydrogen carbonate (KHCO3)? A. 110g/mol B. 84g/mol C. 68g/mol D. 116g/mol

    asked on September 14, 2014
  18. chemistry

    Covalent bonding (with an electronegativity difference below 0.5) results when fluorine bonds with A. hydrogen B. potassium C. iodine D. fluorine

    asked on September 13, 2014
  19. chemistry

    The temperature of a substance ____ as its heat of fusion is added to melt the substance A. increases B. decreases C. remains constant D. fluctuates from rapid increases and decreases

    asked on September 14, 2014
  1. Social Studies

    THE REAL ANSWERS question1 through the travels of Chinese Buddhist monks question2 by establishing trade networks between japan, china, and India question3 (dropdown) Buddhist shrines question4 the Vietnamese adopted the civil service exam question5

    posted on November 12, 2019
  2. Social Studies

    thx MI

    posted on October 31, 2019
  3. math

    Thanks this helped alot

    posted on October 24, 2019
  4. Science

    D because of the weight of the marbles, it would sink, but the toothpicks won't.

    posted on March 27, 2018
  5. Math

    24^2 = 8^2

    posted on May 18, 2015
  6. chemistry

    what do u mean?

    posted on September 14, 2014
  7. chemistry

    like which one changes the most in size.

    posted on September 13, 2014
  8. chemistry

    thx

    posted on September 13, 2014