Carbon tetrachloride was used as a dry cleaning agent until it was recognized that long-term exposure caused negative effects to the liver and kidneys. Which formula would be named carbon tetrachloride?
What is the ion symbol of the oxide ion?
What is the ion symbol of the oxide ion?
Which element can be classified as a metal with variable cha…
Which element can be classified as a metal with variable charge?
What is the charge of the ions formed by group 7A elements?…
What is the charge of the ions formed by group 7A elements?
Which atom fits the electron-dot symbol shown below?
Which atom fits the electron-dot symbol shown below?
Which of the following compounds is classified as covalent?…
Which of the following compounds is classified as covalent?
Which pair of elements will form an ionic compound?
Which pair of elements will form an ionic compound?
Which element may have more than eight valence electrons aro…
Which element may have more than eight valence electrons around it when present in a covalent compound?
For the graph shown. State the range in interval notation. …
For the graph shown. State the range in interval notation.
Dans la salle de classe, il y a un tableau blanc avec trois…
Dans la salle de classe, il y a un tableau blanc avec trois feutres–un feutre bleu et deux feutres oranges. Le feutre bleu dit, «Bonjour, je m’appelle Barney le Feutre-Bleu. Je suis un feutre et j’écris en bleu. Comment vous appellez-vous?» Un feutre répond, «Je m’appelle Olivier le Feutre-Orange. Je suis un feutre aussi, mais j’écris en orange. Et voici ma soeur Opal le Feutre-Orange. Ça va, Barney?» Barney le Feutre-Bleu répond, «Ça va bien. Et toi?» Olivier le Feutre-Orange dit, «Moi, je vais très bien, mais ma soeur Opal le Feutre-Orange va mal.» «Pourquoi?» demande (asks) Barney le Feutre-Bleu. Olivier le Feutre-Orange répond, «La prof aime la couleur orange et elle écrit beaucoup au tableau en orange, mais Opal est fatiguée et elle n’écris plus (not any more). La prof est fachée (mad).» «Pauvre Opal!» répond Barney. 1. The white board has three markers.