• What type of chemical reaction will occur if caustic soda is added to vinegar ?

    Neutralisation Caustic Soda is Sodium Hydroxide (NaOH) Vinegaar is a solution of Ethanoic (Acetic)Acid (CH3COOH) Hence the reaction equation is NaOH + CH3COOH = H2O + CH3COONa The products are water and sodium ethanoate(acetate)
    Neutralisation Caustic Soda is Sodium Hydroxide (NaOH) Vinegaar is a solution of Ethanoic (Acetic)Acid (CH3COOH) Hence the reaction equation is NaOH + CH3COOH = H2O + CH3COONa The products are water and sodium ethanoate(acetate)
    3 answers · Chemistry · 21 hours ago
  • 15=x^2+4x?

    x^2 + 4x - 15 = 0 This will not factor , so use 'Completing the Square'. x^2 + 4x = 15 (x + 2)^2 - (2)^2 = 15 (x + 2)^2 = 15 + 4 = 19 (x + 2 )^2 = 19 x + 2 = +/-sqrt(19) x = -2 +/- sqrt(19)
    x^2 + 4x - 15 = 0 This will not factor , so use 'Completing the Square'. x^2 + 4x = 15 (x + 2)^2 - (2)^2 = 15 (x + 2)^2 = 15 + 4 = 19 (x + 2 )^2 = 19 x + 2 = +/-sqrt(19) x = -2 +/- sqrt(19)
    3 answers · Mathematics · 21 hours ago
  • Give the Atom and Three ions?

    The atom is Argon (At) The three possible ions are Chloride (Cl^-) , Sulphide (S^2-) & Phosphide (P^3-) Each of these three ions has the same electronic configuration as Argon. because each atom has gained an electron(s) to assume the complete octet structure of Argon.
    The atom is Argon (At) The three possible ions are Chloride (Cl^-) , Sulphide (S^2-) & Phosphide (P^3-) Each of these three ions has the same electronic configuration as Argon. because each atom has gained an electron(s) to assume the complete octet structure of Argon.
    3 answers · Chemistry · 1 day ago
  • What is the 2 refering to in trans 2 butene?

    The position in the carbon chain where the alkene double bond starts. H- C(1)H3 -C(2)=C-(3)- C(4)H3 - H For convenience I have labelled in brackets the carbon numbers in the chain . NB You always start with the lowest number.
    The position in the carbon chain where the alkene double bond starts. H- C(1)H3 -C(2)=C-(3)- C(4)H3 - H For convenience I have labelled in brackets the carbon numbers in the chain . NB You always start with the lowest number.
    3 answers · Chemistry · 1 day ago
  • In the Energy Interaction Model, why is there never a Δ in front of Q (heat)?

    The 'Delta' sign refers to the 'DIFFERENCE' in heat between two species. Delta / D / Difference ; It is from Classical Greek alphabet.
    The 'Delta' sign refers to the 'DIFFERENCE' in heat between two species. Delta / D / Difference ; It is from Classical Greek alphabet.
    2 answers · Chemistry · 1 day ago
  • If you started with 15 moles of CH4, to start with, how many moles of H2O would be produced? Usingbalanced equation CH4+ 2O2 -> CO2+ 2H2O?

    CH4 + 2O2 = CO2 + 2H2O Notice the molar ratios are 1:2::1:2 Hence by equivalence 15 : 30 : 15 : 30 Hence '30' moles of water are produced.
    CH4 + 2O2 = CO2 + 2H2O Notice the molar ratios are 1:2::1:2 Hence by equivalence 15 : 30 : 15 : 30 Hence '30' moles of water are produced.
    4 answers · Chemistry · 1 day ago
  • Balance the following equation: ___CH4+___O2 -> ___CO2+_____H2O?

    CH4 + 2O2 = CO2 + 2H2O
    CH4 + 2O2 = CO2 + 2H2O
    5 answers · Chemistry · 1 day ago
  • Chemistry density problem!?

    volume of the rock is 17 - 11.3 = 5.7 mL Density = mass / volume Density = 12.1 / 5.7 = 2.1228 g /mL
    volume of the rock is 17 - 11.3 = 5.7 mL Density = mass / volume Density = 12.1 / 5.7 = 2.1228 g /mL
    2 answers · Chemistry · 1 day ago
  • What do you think of the name Regina for a girl?

    'The word 'Regina' is Latin for 'Queen'. So on a girl its fine!!!!
    'The word 'Regina' is Latin for 'Queen'. So on a girl its fine!!!!
    33 answers · Baby Names · 2 days ago
  • What do you think of the name Riley Sophia for a girl?

    'Riley' ; NO!!! It is an Irish surname Sophia ; YES!!! It means wise.
    'Riley' ; NO!!! It is an Irish surname Sophia ; YES!!! It means wise.
    20 answers · Baby Names · 2 days ago
  • Chemistry Molarity Question!?

    Remember the two 'moles' equations. moles = mass / Mr & moles = [conc] x vol / 1000 Equating mass/Mr = [conc] x vol / 1000 mass = Mr x [conc] x vol / 1000 For 'a' mass = (58.5) x 0.2 x 125 / 1000 mass = 1.4625 g Similarly for 'b' mass = (72 + 12 + 96) x 0.36 x 250 / 1000 mass = 180 x 0.36 x 250 / 1000 mass =... show more
    Remember the two 'moles' equations. moles = mass / Mr & moles = [conc] x vol / 1000 Equating mass/Mr = [conc] x vol / 1000 mass = Mr x [conc] x vol / 1000 For 'a' mass = (58.5) x 0.2 x 125 / 1000 mass = 1.4625 g Similarly for 'b' mass = (72 + 12 + 96) x 0.36 x 250 / 1000 mass = 180 x 0.36 x 250 / 1000 mass = 16.2 g NB the '1000' is used to convert 'mL' to 'dm^3'.
    2 answers · Chemistry · 3 days ago
  • 3x-3 = xy -y and x is not equal to 1 what is the value of y?

    3/x^3 = y(x - 1) y = 3/(x^3(x - 1)) y = 3/(x^4 - x)
    3/x^3 = y(x - 1) y = 3/(x^3(x - 1)) y = 3/(x^4 - x)
    5 answers · Mathematics · 3 days ago
  • Why was a water bath is used to heat naphthalene?

    Because if a burning flame is used, it is likely to ignite the naphthalene.
    Because if a burning flame is used, it is likely to ignite the naphthalene.
    3 answers · Chemistry · 3 days ago
  • The headlights of an automobile are set such that the beam drops 3 in for each 23 ft in front of the car.?

    23ft = 12 x 23 = 276 ins. Tan (Angle) = 3/276 Tan(Ang;e) = 0.01086... Angle = Tan^-1(0.01086...) Angle = 0.62275 ... degrees. (Just slightly more than one half a degree).
    23ft = 12 x 23 = 276 ins. Tan (Angle) = 3/276 Tan(Ang;e) = 0.01086... Angle = Tan^-1(0.01086...) Angle = 0.62275 ... degrees. (Just slightly more than one half a degree).
    4 answers · Physics · 4 days ago
  • Trent's kite is flying on 108 feet of string.?

    Use Pythagoras h^2 = a^2 + b^2 h = 108 a = 54 Hence 108^2 = 54^2 + b^2 b^2 = 108^2 - 54^2 b^2 = ( 108 - 54)(108 + 54) b^2 = 54(162) b^2 = 8748. 0 b = sqrt(8748) b = 93.54 ft. (high)
    Use Pythagoras h^2 = a^2 + b^2 h = 108 a = 54 Hence 108^2 = 54^2 + b^2 b^2 = 108^2 - 54^2 b^2 = ( 108 - 54)(108 + 54) b^2 = 54(162) b^2 = 8748. 0 b = sqrt(8748) b = 93.54 ft. (high)
    6 answers · Mathematics · 4 days ago
  • What is half of 5 3/8?

    5 3/8 X 1/2 = 43/8 X 1/2 = 43/16 = 2 11/16
    5 3/8 X 1/2 = 43/8 X 1/2 = 43/16 = 2 11/16
    20 answers · Mathematics · 4 days ago
  • Is it OK to teach your children how and when to lie?

    NO!!! Of God's Ten Commandments one is ' Thou shalt not bear false witness'. In modern English 'You shall not lie'.
    NO!!! Of God's Ten Commandments one is ' Thou shalt not bear false witness'. In modern English 'You shall not lie'.
    116 answers · Religion & Spirituality · 4 days ago
  • What is moscow?

    Moscow is the capital city of Russia. There is also another Moscow in Ayrshire in Scotland.
    Moscow is the capital city of Russia. There is also another Moscow in Ayrshire in Scotland.
    6 answers · Geography · 4 days ago
  • Arithmetic progression:?

    S(n) = (n/2)(2a + (n- 1)d) Hence 243 < (n/s)(2(-12) + 9n- 1)3) 243< =(n/2)(-24 +3n - 3) 243 < (n/2)(-27 + 3n) 486 < -27n + 3n^2 3n^2 - 27n - 486 > 0 3(n^2 - 9n - 162) > 0 n^2 - 9n - 162 > 0 Factor ( n - 18)(n + 9) > 0 n > 18
    S(n) = (n/2)(2a + (n- 1)d) Hence 243 < (n/s)(2(-12) + 9n- 1)3) 243< =(n/2)(-24 +3n - 3) 243 < (n/2)(-27 + 3n) 486 < -27n + 3n^2 3n^2 - 27n - 486 > 0 3(n^2 - 9n - 162) > 0 n^2 - 9n - 162 > 0 Factor ( n - 18)(n + 9) > 0 n > 18
    4 answers · Mathematics · 5 days ago
  • What was the name of this empire?

    Mongol Empire
    Mongol Empire
    1 answer · Geography · 6 days ago