• I'm asking for chemistry?

    Best answer: Add Bromine water (Br2) which is red/orange/brown in colour. The Hex-1-ene will decolorise the bromine water to colourless. The Cyclohexane will NOT decolorise bromine water. It will remain red/orange in colour. NB This is the classic test for Alkenes.
    Best answer: Add Bromine water (Br2) which is red/orange/brown in colour. The Hex-1-ene will decolorise the bromine water to colourless. The Cyclohexane will NOT decolorise bromine water. It will remain red/orange in colour. NB This is the classic test for Alkenes.
    3 answers · Chemistry · 2 weeks ago
  • What is the nuclear decay equation for Carbon-14? #Chemistry?

    Best answer: [14/6]C = [14/7]N + beta decay(b-) beta decay is an electron emitted from the nucleus. A neutron disintegrates to form a proton and an electron [1]n = [1]p + e^- Hence the six protons (Carbon)have changed to 7 protons (Nitrogen). The mass remains the same as 1 neutron = 1 proton (by mass). The half life of the decay process is 5570... show more
    Best answer: [14/6]C = [14/7]N + beta decay(b-) beta decay is an electron emitted from the nucleus. A neutron disintegrates to form a proton and an electron [1]n = [1]p + e^- Hence the six protons (Carbon)have changed to 7 protons (Nitrogen). The mass remains the same as 1 neutron = 1 proton (by mass). The half life of the decay process is 5570 years.
    2 answers · Chemistry · 4 weeks ago
  • Whatssup? THIS ONE. Solve it chemistry experts?

    Best answer: This is an esterification reaction between propan-1-ol (Alcohol) and ethanoic acid . The con. sulphuric acid and heat are used to speed up the reaction. CH3COOH + CH3CH2CH2OH <== (H^+/heat)==> CH3C(=O)OCH2CH2CH3 + H2O Hence 'y' is ethanoic acid The ester is an 'oily' substance and does not hydrogen bond to... show more
    Best answer: This is an esterification reaction between propan-1-ol (Alcohol) and ethanoic acid . The con. sulphuric acid and heat are used to speed up the reaction. CH3COOH + CH3CH2CH2OH <== (H^+/heat)==> CH3C(=O)OCH2CH2CH3 + H2O Hence 'y' is ethanoic acid The ester is an 'oily' substance and does not hydrogen bond to waater nor acid.
    1 answer · Chemistry · 4 weeks ago
  • Which of the following compounds is the most soluble in water?

    Best answer: B Propanoic Acid
    Best answer: B Propanoic Acid
    2 answers · Chemistry · 3 weeks ago
  • Predict the products of the following reactions using the solubility rules. Include proper physical states, changes and cofficients.?

    Best answer: 2AgNO3(aq) + CuCl2(aq) = 2AgCl(s) + Cu(NO3)2(aq) Silver Chloride, AgCl , and precipitates as a WHITE solid. Classic Halide test. Ba(NO3)2(aq) + CuSO4(aq) = BaSO4(s) + Cu(NO3)2(aq) Barium Sulphate (BaSO4) ; and precipitates down as a WHITE solid. Classic Sulphate test.
    Best answer: 2AgNO3(aq) + CuCl2(aq) = 2AgCl(s) + Cu(NO3)2(aq) Silver Chloride, AgCl , and precipitates as a WHITE solid. Classic Halide test. Ba(NO3)2(aq) + CuSO4(aq) = BaSO4(s) + Cu(NO3)2(aq) Barium Sulphate (BaSO4) ; and precipitates down as a WHITE solid. Classic Sulphate test.
    2 answers · Chemistry · 4 weeks ago
  • In terms of protons and electrons; describe a negative ion.?

    Best answer: A negative ion (ANION) contains more electrons than protons. e.g. Cl^- (Chloride ion) A positive ion (CATION) contains more protons than electrons. e.g. K^+ (Potassium ion)
    Best answer: A negative ion (ANION) contains more electrons than protons. e.g. Cl^- (Chloride ion) A positive ion (CATION) contains more protons than electrons. e.g. K^+ (Potassium ion)
    5 answers · Chemistry · 1 month ago
  • Brâ‚‚ initiated UV______chemistry?

    Best answer: This is FREE RADICAL SUBSTITUTION using Bromine instead of chlorine. (a) Mistry gas is Hydrogen Bromide (b) CH3CH2CH2CH2CH2CH3 + Br2 = CH3CH2CH2CH2CH2CH2Br + HBr (c) Because sunlight provides u.v. Ultra Violet) light, which breaks the Br-Br covalent bond into two free radicls Br2 = 2Br* (d) 1. Br2 ==uv==> 2Br* 2. C6H14 + Br* =... show more
    Best answer: This is FREE RADICAL SUBSTITUTION using Bromine instead of chlorine. (a) Mistry gas is Hydrogen Bromide (b) CH3CH2CH2CH2CH2CH3 + Br2 = CH3CH2CH2CH2CH2CH2Br + HBr (c) Because sunlight provides u.v. Ultra Violet) light, which breaks the Br-Br covalent bond into two free radicls Br2 = 2Br* (d) 1. Br2 ==uv==> 2Br* 2. C6H14 + Br* = C6H13* + HBr C6H13* + Br2 = C6H13Br + Br* 3. Any two free radical form a molceule 2Br* = Br2 C6H13* + Br* = C6H13Br C6H13* + C6H13* = C12H26
    2 answers · Chemistry · 2 months ago
  • X equals minus b plus-or-minus the square root of b-squared minus 4ac, divided by 2a. How much money is that worth?

    Best answer: You have quoted the solution to the 'Quadratic Equation.
    Best answer: You have quoted the solution to the 'Quadratic Equation.
    7 answers · Mathematics · 2 months ago
  • Hi For my science prac, I need to write an equation as to how the following salts ionize in water 1. KNO3 2. K2SO4?

    Best answer: 1' KNO3(s)= K^+(aq) + NO3^-(aq) 2' K2SO4(s) = 2K^+(aq) + SO4^2-(aq)
    Best answer: 1' KNO3(s)= K^+(aq) + NO3^-(aq) 2' K2SO4(s) = 2K^+(aq) + SO4^2-(aq)
    2 answers · Chemistry · 2 months ago
  • What habitats are in Chile? (Example: rainforests, deserts, etc.)?

    Best answer: Northern Chile is desert ( The Atacama Desert) ; It is the driest place on Earth. with 0.1 mm rain per year. Central Chile is Mediterranean climate (Hot dry summers, cool wet winters). Southern Chile is North West European Climate ( Warm summers, cool winters , with preciptation(rain/snow) at all seasons.
    Best answer: Northern Chile is desert ( The Atacama Desert) ; It is the driest place on Earth. with 0.1 mm rain per year. Central Chile is Mediterranean climate (Hot dry summers, cool wet winters). Southern Chile is North West European Climate ( Warm summers, cool winters , with preciptation(rain/snow) at all seasons.
    2 answers · Geography · 2 months ago
  • What is the molecule name? *Please help*?

    Best answer: CH3-CH2-CH(CH3)=CH-CH3 3-methylpent-2-ene Depending on the isomerism of the alkene bond it coul be either 'E/trans' or 'Z/cis' form . If the hydrogens on carbons '3' & '2' are on the same/opposite side of the double bond then it is 'Z/cis/E/trans' form The double bond is at carbon number... show more
    Best answer: CH3-CH2-CH(CH3)=CH-CH3 3-methylpent-2-ene Depending on the isomerism of the alkene bond it coul be either 'E/trans' or 'Z/cis' form . If the hydrogens on carbons '3' & '2' are on the same/opposite side of the double bond then it is 'Z/cis/E/trans' form The double bond is at carbon number '2' ; counting from the lowest number. Hence E-3-methylpent-2-ene or Z-3-methylpent-2-ene
    2 answers · Chemistry · 2 months ago
  • What is the pressure in Pa in a container with a volume of 0.076 m3 containing 4.5 x 1023 nitrogen molecules at a temperature of 19. oC?

    Best answer: PV = nRT (The Ideal Gas Equation) P = nRT / V n (moles) = 4,5 x 10^23 / 6.022 x 10^23 =0.7475 moles R = 8.31 (The Gas Constant0 T = 19 + 271 = 292 K (Note it is Kelvin(K)) V = 0.076 m^3 (Note it is in Cubic metres(m^3)) Hence P = 0.7475 x 8.31 x 292 / 0.076 P = 23866.3665 Pa P = 23.866 kPa
    Best answer: PV = nRT (The Ideal Gas Equation) P = nRT / V n (moles) = 4,5 x 10^23 / 6.022 x 10^23 =0.7475 moles R = 8.31 (The Gas Constant0 T = 19 + 271 = 292 K (Note it is Kelvin(K)) V = 0.076 m^3 (Note it is in Cubic metres(m^3)) Hence P = 0.7475 x 8.31 x 292 / 0.076 P = 23866.3665 Pa P = 23.866 kPa
    2 answers · Chemistry · 2 months ago
  • Is San Francisco still on the West Coast?

    Best answer: YES!!!! It has never moved!!!!!
    Best answer: YES!!!! It has never moved!!!!!
    18 answers · Geography · 3 months ago
  • How do you multiply percents on paper?

    Best answer: 0.05 = 5/100 Hence 5,000,000 X 5 / 100 = Cancel down by '100' Hence 50,000 x 5 = 250,000 By decimals on paper. 5,000,000 x 0.05 = 25,000,000 Then because there are two decimal places in the multiple you place the decimal point two places to the left. Hence 25,000,000 becomes = 250,000.00 = 250,000 show more
    Best answer: 0.05 = 5/100 Hence 5,000,000 X 5 / 100 = Cancel down by '100' Hence 50,000 x 5 = 250,000 By decimals on paper. 5,000,000 x 0.05 = 25,000,000 Then because there are two decimal places in the multiple you place the decimal point two places to the left. Hence 25,000,000 becomes = 250,000.00 = 250,000
    7 answers · Mathematics · 3 months ago
  • What is the hydorxide ion concentration of a solution that has a pOH of 9.24?

    Best answer: pOH = -log(10) [OH-] It mathematical inverse is [OH-] = 10^(-pOH) [OH-] = 10^(-9.24)
    Best answer: pOH = -log(10) [OH-] It mathematical inverse is [OH-] = 10^(-pOH) [OH-] = 10^(-9.24)
    1 answer · Chemistry · 3 months ago
  • What is the concentration of hydronium ions in a solution witha pH of 1.65?

    Best answer: pH = -log(101)[ H+] It mathematical inverse is [H+] = 10^(-pH) Hence [H+] = 10^(-1.65)
    Best answer: pH = -log(101)[ H+] It mathematical inverse is [H+] = 10^(-pH) Hence [H+] = 10^(-1.65)
    2 answers · Chemistry · 3 months ago
  • What is the distance of the line AB whose points are at A (3,2) and B (9,5)?

    Best answer: Use Pythagoras. AB^2 = (3 - 9)^2 + ( 2 - 5)^2 AB^2 = (-6)^2 + (-3)^2 AB^2 = 36 + 9 = 45 AB^2 = 45 AB = Sqrt(45) = 3Sqrt(5) AB = 6.708....
    Best answer: Use Pythagoras. AB^2 = (3 - 9)^2 + ( 2 - 5)^2 AB^2 = (-6)^2 + (-3)^2 AB^2 = 36 + 9 = 45 AB^2 = 45 AB = Sqrt(45) = 3Sqrt(5) AB = 6.708....
    2 answers · Mathematics · 8 months ago
  • Why are buckminster fullerenes good lubricants?

    Best answer: Because they are spherical, 'roll like balls'. Also the electron cloud of the B/Fullerene repels other species from attaching.
    Best answer: Because they are spherical, 'roll like balls'. Also the electron cloud of the B/Fullerene repels other species from attaching.
    1 answer · Chemistry · 3 months ago
  • Please help with my math?

    Best answer: Apply Pythagoras d^2 = (1- 4)^2 + ( 5 - - 3)^2 d^2 = 3^3 + 8^2 d^2 = 9 + 64 d^2 = 73 d = qrt(73) = 8.544 km d = 8.5 km ( Nearest tenth of a km).
    Best answer: Apply Pythagoras d^2 = (1- 4)^2 + ( 5 - - 3)^2 d^2 = 3^3 + 8^2 d^2 = 9 + 64 d^2 = 73 d = qrt(73) = 8.544 km d = 8.5 km ( Nearest tenth of a km).
    4 answers · Mathematics · 3 months ago
  • Factorize 2520 and 6468 into prime factors, hence find their GCD.?

    Best answer: Since it is an even numbers divide by the first prime number Hence 2)2520 2)1260 2)630 2)315 Since it is no longer an even number, we try the next prime number ; '3' 3)315 3)105 5)35 Then '5' 7)7 = 1 When reduced to '1' we have all the factors. Hence 2520 = 2^4 X 3^2 x 5^1 x 7^1 Similarly for 6468... show more
    Best answer: Since it is an even numbers divide by the first prime number Hence 2)2520 2)1260 2)630 2)315 Since it is no longer an even number, we try the next prime number ; '3' 3)315 3)105 5)35 Then '5' 7)7 = 1 When reduced to '1' we have all the factors. Hence 2520 = 2^4 X 3^2 x 5^1 x 7^1 Similarly for 6468 2)6468 2)3234 3)1617 7)539 (NB '5' will not divide) 7)77 11)11 = 1 Hence 6468 = 2^2 x 3^1 x 7^2 x 11^1 Hence 2^2 x 3^1 x 7^1 is common to both 4 x 3 x 7 = 84 is the GCD
    6 answers · Mathematics · 3 months ago