Câu 1:Cho 25ml dung dịch AgNO3 0.1248N vào 20ml dung dịch NaCl. Chuẩn độ lượng AgNO3 dư thấy tiêu tốn hết 11.54 ml dung dịch KCNS 0.0875 N. Tính nồng độ của dung dịch NaCl.

Solve the equation -9p - 17 =10 a -3 b. 16 c. 18 d -16

Find the greatest common factor of the followig monomials 21u^5v,3u^4v^6, and 3u^2v^5

Me max recorded the heights of 500 male humans. he found that the heights were normally distributed around a mean of 177 centimeters. which statements about max’s data must be true? a) the median of max’s data is 250 b) more than half of the data points max recorded were 177 centimeters. c) a data point chosen at random is as likely to be above the mean as it is to be below the mean. d) every height within three standard deviations of the mean is equally likely to be chosen if a data point is selected at random.