Which refers to a measure of how acidic or basic a solution is? a]pH b]solubility c]reactiveness d]hardness

HELP ME PLEASE REALLY IMPORTANT OR ILL GET IN TROUBLE!! WILL MARK AS BRAINLEST IF YOU GET IT CORRECT!! Please answer this correctly Be sure to answer all parts. Three 8L flasks, fixed with pressure gauges and small valves, each contain 4 g of gas at 276 K. Flask A contains He, flask B contains CH4, and flask C contains H2. Rank the flask contents in terms of: Read the sentence. I love reading travel books because they include beautiful pictures of faraway places and they motivate me to explore the world. How should this sentence be revised? I love reading travel books, because they include beautiful pictures of faraway places and they motivate me to explore the world. I love reading travel books because they include, beautiful pictures of faraway places and they motivate me to explore the world. I love reading travel books because they include beautiful pictures of faraway places, and they motivate me to explore the world. I love reading travel books because they include beautiful pictures of faraway places and, they motivate me to explore the world. Graph g(x)=-2|x-5|-4 Which character is the most anxious to have Helen back at home? (after her week with Annie in the garden house) James, Captain Keller, Annie Sullivan, Percy, Kate Esterification is what type of reaction? 1.addition 2.neutralization 3.combustion 4.equilibrium Jaden had 2 7/16 yards of ribbon. He used 1 3/8 yards of ribbon to make a prize ribbon. How much does he have now? Could someone help me match the types of resources with their descriptions ? if a=3i+9j and b=4i-6j, find 5a-3b Write your answer in the form i + j. Write 18-2 square root of -9 in the form of a+bi The "three R's" describe an infant or toddler'sA. angry reactions to other children.B. verbal responses to adults.C. general interactions with others.D. reaction to physical abuse by another child. Which is not a reason why it is extremely dangerous to drive a car under the influence of marijuana?A. Users have a loss of motor coordination.B. Users have increased heart rates.ByC. Users feel sleepy or drowsy.D. Users have difficulty judging distances. 7. Do you have any reservations about taking this course? Explain. How can I help? I dont understand what it means by reservations please help I just started this and I'm already stressed out What is the factorization of 729x15 + 1000? A block rests on a frictionless horizontal surface and is attached to a spring. When set into simple harmonic motion, the block oscillates back and forth with an angular frequency of 8.1 rad/s. The drawing shows the position of the block when the spring is unstrained. This position is labeled x= 0 m. The drawing also shows a small bottle located 0.080 m to the right of this position. The block is pulled to the right, stretching the spring by 0.050 m, and is then thrown to the left. In order for the block to knock over the bottle,it must be thrown with a speed exceeding v0. Ignoring the width of the block, find v0. If you slide down a rope, it's possible to create enough thermal energy to burn your hands or your legs where they grip the rope. Suppose a 30 kg child slides down a rope at a playground, descending 2.5 m at a constant speed.How much thermal energy is created as she slides down the rope? hey pls show some working i need some serious help which of these is an example of quantitative data a. Recording amount of chemicals used in an experiment and any temperature changes observedb.Listing the materials equipment and process is required for an experimentc. Recording color changes in other visible effects observed during an experiment The blood platelet counts of a group of women have a bell-shaped distribution with a mean of 255.4 and a standard deviation of 63.9. (All units are 1000 cells/muL.) Using the empirical rule, find each approximate percentage below. a. What is the approximate percentage of women with platelet counts within 3 standard deviations of the mean, or between 63.7 and 447.1? b. What is the approximate percentage of women with platelet counts between 191.5 and 319.3?