al6iceBowtaagaliema al6iceBowtaagaliema

23-09-2016
Chemistry

contestada

what is the mass of 5.35×1021 platinum atoms?

Respuesta :

HomertheGenius HomertheGenius

05-10-2016

Atomic weight of a Platinum:
195.078 u = 195.078 * 1.66 * 10^(-27) kg = 3.2382948 * 10^(-25) kg
m ( Pt ) = 3.2382948 * 10^(-25) * 5.35 * 10^(21) =
= 1.732488 * 10^(-3) kg = 1.732448 g

Answer Link

Otras preguntas

When a trait is always expressed, it is considered to be a trait. O Recessive O Codominant O Dominant O Incomplete

can someone please answer my math question WILL GIVE BRAINIEST

Sherane rolls a standard, six-sided number cube. Find p (not composite).

Choisissez la bonne réponse. Complétez avec le pronom relatif composé. C’est ma meilleure amie ____ j’écris souvent relatif composee fast plss

What is the probability of rolling a number greater than or equal to 8 with the sum of two dice, given that at least one of the dice must show a 6?

How many (and of what nature) roots does the function have?

In quadrilateral QRST, Angle R S T measures (5x+15)°. Angle TQR measures (4x+3)°. Circle P is inscribed with quadrilateral Q R S T. What is the measure of angle

Which of the following equations is not balanced? O 2NaHCO3 + H2SO4 -> Na2SO4 + 2H2O + CO2 O 2NO + O2 -> 2NO2 O Cu + 2AgNO3 -> Cu(NO3)2 + 2Ag O 2Mg + O

5. The circumference of the earth is about 24,855miles. Find the surface area of the Western Hemisphere of Earth.

Please answer quickly!!! Which social media has the best safety settings compared to the other top platforms?