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Which of the following represents a system that is completely open? A. a pot of boiling water B. a pressure cooker C. a capped soda bottle D. a pressurized canister of helium gas

Help please!!! Having trouble on question 6 The expeditions conducted by Francisco Vzquez de Coronado and Juan de Oate were politically significantfor all of these reasons exceptA. Spain claimed all of the lands up to QuiviraB. Coronado created alliances with the Wichita American IndiansC. Spanish maps included all lands up to Quivira, including OklahomaD. new Spanish claims served as the border between Spanish and French explorations Write 46 sentences explaining why it is important to have precise definitionsin mathematics. Choose five terms, some from geometry and some from otherareas of mathematics, and give a precise definition of each. Then change eachof those definitions so that it still describes the term but not precisely enough to avoid ambiguity. formulate counter examples, with sketches when feasible, that show how things could satisfy the less precise definitions but not match the intended terms. pleaseeee help asap !avoid ambiguity. Formulate counterexamples, with sketches when feasible, thatshow how things could satisfy the less precise definitions but not match theintended terms. How many grams of solid potassium chlorate (KClO 3, 122.55 g/mol) are needed to make 150 mL of 0.50 M solution Why do some elements that are classified as metals not look metallic? If c(x)=5/x-2 and d(x)=x+3,. What is the domain of (CD)(x) what is (- 4/5) x (- 5/8) One characteristic of Italian Renaissance art is:Question 2 options:One characteristic of Italian Renaissance art is:Question 2 options:The figures in them have ideal beauty and physical perfectionThe art contains bright, neon colorsThe figures are abstract and difficult to identifySome of the art is photography 6x^2 - 9x + 3- (8x+ 7x - 1) A store sells a variety of sets for building molecular models. The sets are described by the diagram below. Each circled letter represents a box of 6 model atoms of one element. For example, the circled letter "P" represents a box with 6 model phosphorous atoms.Set 1 has 12 carbon, 12 oxygen, and 18 hydrogen atoms. Set 2 has 12 carbon, 12 oxygen, and 24 hydrogen atoms. Set 3 has 6 carbon, 12 oxygen, 12 hydrogen, 6 nitrogen, and 6 phosphorous atoms. Set 4 has 6 carbon, 6 oxygen, 6 hydrogen, and 6 phosphorous atoms.Kendra wishes to build a model of a carbohydrate molecule, ideally containing as many monomers as possible. Which set should she choose?A.Set 1B.Set 2C.Set 3D.Set 4 At the movie theatre, child admission is $6.40 and adult admission is $9.50. On Sunday, 165 tickets were sold for a total sales of $1266.80. How many adult tickets were sold that day? Why is access to Baltic sea important for Russia Integral..Could you help me,please? Iron filings are attracted by a magnet. This is a physical property of iron but not of most other materials, including sand. How could you use this difference in physical properties to separate a mixture of iron filings and sand? 1) A plane lands on a runway with a speed of 125 m/s, moving east, and it slows to a stop in 13.0 s. What is the magnitude (in m/s2) and direction of the plane's average acceleration during this time interval?2) Influenced by the gravitational pull of a distant star, the velocity of an asteroid changes from from +20.8 km/s to 17.1 km/s over a period of 2.01 years.(a) What is the total change in the asteroid's velocity? (Indicate the direction with the sign of your answer.)(b) What is the asteroid's average acceleration during this interval? (Indicate the direction with the sign of your answer.) what do you mean by electromagnet induction?under what condition is this phenomenon possible? sam has 24 muffins,which need to be split into dozens. 8 of the muffins are blueberry. how many boxes does he need? When was the Occupational Safety and Health Act passed? What conclusion can you draw about the location of the cities around the world. Help me plz I need help!!