Answer:65
Explanation:When you eliminate the 89 do more matha and recyt u get 65 haha
Answer:
397 g
Explanation:
From the information given in the question ,
the atomic mass of X = 12 ,
and , the atomic mass of Y = 1 .
For the molecular formula , X₇Y₁₁ , the molecular mass is given as -
X₇Y₁₁ = 7 * atomic mass of X + 11 * atomic mass of Y
= 7 * 12 + 11 * 1
= 84 + 11 = 95 g / mol
Hence , molecular mass of X₇Y₁₁ = 95 g / mol .
Moles is denoted by given mass divided by the molecular mass ,
Hence ,
n = w / m
n = moles ,
w = given mass ,
m = molecular mass .
From question ,
moles n = 4.18 mol
and ,
m = molecular mass of X₇Y₁₁ = 95 g / mol .
To find the mass of the compound X₇Y₁₁ , the above formula can be used , and putting the respective values ,
n = w / m
4.18 = w / 95
w = 4.18 * 95 = 397 g
Explanation:
They are called consumer testing or comparative testing, is a process of measuring the properties or performance of products. ... Product testing might be accomplished by a manufacturer, an independent laboratory, a government agency, etc. Often an existing formal test method is used as a basis for testing
hope this helps
count the elements in eqn MgI2 + Br2 -> MgBr2 + I2
1 Mg, 2I, 2Br on the left n
1 Mg, 2I, 2Br on the right
they are equal so the eqn is balanced
