Halle la cantidad de protones, si el número de masa es 94 y el número de neutrones es 37.

a) 40

b) 57

c) 60

d) 70

e) 131

A beam of light has a wavelength of 24.0 μm (μm = 10 - 6m). What is its frequency? Choices: a. 1.25 x 1013 Hz b. 8.00 x 10-8 Hz c. 1.25 x 107 Hz d. 8.00 x 10-11 Hz

How many hydrogen bonds can CH2O make to water?

A sample of gas is held at constant pressure. Increasing the Kelvin temperature of this gas sample causes the average kinetic energy of its molecules to (1) decrease and the volume of the gas sample to decrease (2) decrease and the volume of the gas

In the formula XF2, the element represented by X can be classified as a Group 1 metal Group 2 metal Group 1 nonmetal Group 2 nonmetal

7.00 g of a certain Compound X, known to be made of carbon, hydrogen and perhaps oxygen, and to have a molar mass of 70. g/mol, is burned completely in excess oxygen, and the mass of the products carefully measured. 21.96 g of carbon dioxide and 8.

Which pack has the greatest change in enthalpy, warm packs (such as hand warmers) or cold packs (such as an ice pack) ?

A gay cylinder what are the variables in gay-lussacs law

What is the cosmic address of earth in the cosmos?

What values do we plot on the y-axis of a graph

What is the n factor of Ba (MnO4) 2 in acidic medium when it reacts with H2O2?