As transformações estão presente em nosso cotidiano, elas nunca param de acontecer, na sua maioria invisível a olho nu. Quais critérios é preciso observar para identificar se ocorreu transformação?

How many grams of kbr must be dissolved to make 25.0 ml of a solution that has a molarity of 0.85 m?

Which of the following particles is found outside the nucleus of an atom

How would the strength of an electromagnet be affected if its 1.5V battery is replaced by a 9V battery while using the same nail and coil?

A bubble of air is rising up through the ocean. When it is at a depth of 20.0 m below the surface, where the temperature is 5.00°C, its volume is 0.90 cm3.

What does emulsion mean?

Why reducing power of elements increase, on moving down a group?

Which of the following is not a result of air pollution? A. Smog B. Breathing problems C. Global warming D. Soil erosion

rank the following list of aqueous solutions and solvents according to decreasing vapor pressure the substance with the higher vapor pressure should be placed at top 0.10 M glucose pure water 0.050 M urea 0.20 M sucrose

What does the p mean in 1s22s22p63s1?

Why are alkaline earth metals and alkali metals found in nature by themselves?