Pls help!!Why do scientists use models?
Question 1 options:
because some systems are so large, small, or complex they are difficult to predict
all answers are true
to aid in the development of questions and explanations about systems
to replicate and simplify physical reality to allow for precise experiments
Answers: 2
Chemistry, 22.06.2019 10:30, officialalex6330
Balance and in which category does it fit in? single or double displacement or synthesis or decomposition? (a) k2 o โ k + o2 (b) na + i2 โ nai (c) cu(no3 )2 + naoh โ cu(oh)2 + nano3 (d) kclo3 โ kcl + o2 (e) ca(no3 )2 + hbr โ cabr2 + hno3 (f) sn(oh)2 โ sno + h2 o (g) p4 + n2 o โ p4 o6 + n2 (h) fe + al2 (so4 )3 โ feso4 + al (i) alcl3 + na2 co3 โ al2 (co3 )3 + nacl (j) c3 h6 + o2 โ co2 + h2 o
Answers: 1
Chemistry, 23.06.2019 02:30, kieante01
Which statement best describes the liquid state of matter? a. it has definite shape but indefinite volume. b. it has definite shape and definite volume. c. it has indefinite shape and indefinite volume. d. it has indefinite shape but definite volume.
Answers: 1
Chemistry, 23.06.2019 02:50, igraha17
Dumbledore decides to gives a surprise demonstration. he starts with a hydrate of na2co3 which has a mass of 4.31 g before heating. after he heats it he finds the mass of the anhydrous compound is found to be 3.22 g. he asks everyone in class to determine the integer x in the hydrate: na2co3ยทxh2o; you should do this also. round your answer to the nearest integ
Answers: 2
Pls help!!Why do scientists use models?
Question 1 options:
because some systems are s...
because some systems are s...
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