Topic
Q:
- \( (a+b)^{2}=a^{2}+2 a b+b^{2} \)
Q:
Données: \( \mathrm{C}=12 \mathrm{~g} / \mathrm{mol} ; \mathrm{H}=1 \mathrm{~g} / \mathrm{mol} ; \mathrm{V}_{\mathrm{m}}=22,4 \mathrm{~L}_{\mathrm{mol}} \mathrm{mol}^{-1} \)
Tu es le rapporteur du groupe.
1-Donne la formule brute générale des alcynes.
2-Ecris l'équation bilan de la réaction d'hydrogénation d'un alcyne
3- Détermine:
3-1. La formule brute de l'alcyne A .
3-2.la masse \( \mathrm{m}_{\mathrm{B}} \) de l'alcane formé.
Q:
Яка із заданих точок належить осі \( O z ? \)
\( \begin{array}{llll}\text { А } A(3 ; 0 ; 0) & \text { Б } B(0 ; 0 ;-5) & \text { В } C(0 ;-4 ; 0) \quad \text { Г } D(2 ; 3 ; 0)\end{array} \)
Q:
Eli wants to know which exhibit at a science museum is the most popular. Which is the best group to survey to find this information?the museum staff who set up all of the current exhibitsevery person buying a ticket to the science museumevery fifth person who leaves the museum one afternoona group of classmates
Q:
\( \begin{array}{ll}\text { Яка з точок } A(6 ; 3 ; 0), B(0 ; 7 ;-6), & C(-8 ; 0 ; 9) \text { належить координат- } \\ \text { ній площині } y O z ? & \\ \text { А Точка } A & \text { В Точка } C \\ \text { Б Точка } B & \text { г Жодна } 3 \text { даних точок }\end{array} \)
Q:
If a line goes up from left to right, what can you say about its slope? Give an example.
Q:
Find the slope for the points (0, 0) and (4, 8).
Q:
Write the decimal expansion for \( \frac{5}{9} \)
Q:
M y N empiezan a jugar cartas con igual cantidac
de dinero cada uno. Cuando \( M \) ha perdido \( \$ 50 \), e
tiene la tercera parte delo que tiene \( N \), icon cuánto
empezó a jugar cada uno?
Q:
Find the value of \( x \) in the equation \( 81^{x} \times \frac{1}{3} \times 9^{2 x}+74=317 \)
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