What is #14 + 18 -:2 * 18 -7#, using order of operations?
14+18-:2xx18-7=color(blue)169 PEMDAS is an anagram that helps us to remember the order of operations. 14+18-:2xx18-7 There are no parentheses or exponents, so we start with …
An ion with 7+ charge contains 18 electrons. Which ion is it?
2018年6月12日 · Manganese(VII). Since the ion has 18 electrons in its +7 oxidation state, in its neutral form, it must have 18+7=25 electrons. That also means that it has 25 protons when it's …
How do you determine the number of possible triangles and find …
2017年10月31日 · A=20^@,B_1= 25^@19', C_1 = 134^@41' and A=20^@,B_2= 154^@41'', C_2 = 5^@19' Since the given information is for a SSA triangle it is the ambiguous case. In the …
Write an Equation Given the Slope and a Point - Socratic
What is x-intercept? It is such an argument (x-value) where y-value equals 0. In equations you would tell that it is root of the equation.
18.7 is what percentage of the number 56.1? - Socratic
By inputting values (18.7 as x, and 56.1 as y), the result becomes #18.7/56.1*100# If you weren't allowed to use a calculator, you could divide 56.1 by using long division. If you were allowed a …
Percent Composition - Chemistry - Socratic
The molar mass of #H_2O# is 18 g/mol The hydrogens make up 2g (since each mole of hydrogen is 1g) The oxygen makes up 16g. The percent composition of the compound is: H = (2g/18g) x …
Direct Variation - Algebra - Socratic
The circumference of a circle varies directly with the diameter. If the circumference is 18.85 inches for a circle with a diameter of 6 inches, what is the circumference of a circle with a diameter of …
What’s the empirical formula of a molecule containing 18.7
2014年7月16日 · "Li"_2"CO"_3 Solution: 1) Assume "100 g" of the compound is present. "100 g" of this compound on decomposition gives me "Li" => 18.7 % or "18.7 g" of "Li" "C" => 16.3 % …
How do you solve the system of equations #8x - y = 18# and
2016年12月14日 · x = 1 and y = -10 Step 1) Solve the first equation for y: 8x - y + y - 18 = 18 - 18 + y 8x - 0 - 18 = 0 + y 8x - 18 = y or y = 8x - 18 Step 2) Substitute 8x - 18 for y in the second …
Does fluorine-18 undergo positron decay? - Socratic
2014年5月11日 · Fluorine-18 undergoes positron emission with a half-life of 109.7 min. > The equation for the emission is ""_9^18"F" →color(white)(l) _8^18"O" +color(white)(l) …