baileychyna182 baileychyna182

17-02-2018
Chemistry

contestada

What is the percent by mass of NaHCO3 in a solution containing 70 g of NaHCO3 dissolved in 800 mL of H2O?

Respuesta :

Аноним Аноним

17-02-2018

The percent by mass will be the amount of NaHCO3 divided by the total mass times 100.

20g/(400g + 20g) x 100 = 4.76%

Answer Link

Otras preguntas

Earths tectonic plates move in response to convection a. in earths crust b. In the outer core c. Due to earthquakes d. In the asthenosphere

What best describes the underlying cause of the Cold War? A. The remaining anger of enemies on opposing sides in World War II B. Soviet financial aid to Britain

How are Muslim and Chines calendars different? A. the Muslim calendar is based on the Jewish calendar, while the Chinese calendar is based on the Gregorian cal

A teacher says she has identified an organism with these characteristics: eukaryotic, multicellular, autotrophic, and a cell wall made of cellulose. Which kingd

You will be administratively suspended if you have a breath or blood alcohol level of ____ or above or refuse to submit to a chemical test.

In organisms other than plants, when and where is the most ATP produced? in thylakoids, during photosynthesis in nuclei, during cellular respiration in chloropl

Which of these statements about the organization of the periodic table is true? a. Elements in the same column have the same number of valence electrons. b. E

What is the prefix of irresponsible? ir- irres- response responsible -ible

You wish to mentally estimate the total cost of items that have the following prices: $1.85, $.98, $3.49, $9.78, and $6.18. Rounding off the items to the neares

Exit What is the number of moles of solute in 250 mL of a 0.4 M solution? Don't forget the unit.