What is a physical change? a. a change of state b. a change that can be measured without reference to other substances c. a change in reactivity d. a change of atomic structure Differentiate between chemical and physical changes. Explain how physical changes in matter take place. ...
How do you think scientists established this reactivity series? Is there an element there that seems out of place to you? Please answer in at least 100 words and add citations and references. Is air classified as an element, a compound, or a mixture? Explain. ...
Explain why even if a chemical reaction has a yield close to 100%, the atom economy may be poor. What is the comparative reactivity and hazards of NaBH4 compared to LiAlH4? Compare the different results when they are added to water, ethyl acetate and methanol. ...
Indeed, DMSO is known to have a significant effect on the cell membrane, for example, by creating pores in the phospholipid bilayers and altering the water permeability of the cell membrane [40,41,42,43]. However, the correlation between cell membrane fluidity and DMSO reactivity in MSCs and...
1f). The specificity of the two HER3 antibodies used in the assay was further confirmed by the absence of cross-reactivity in SDS-PAGE/western blot and VeraTag assays using cell lines expressing variable levels of HER3, HER2, and HER1 (data not shown). Impact of HER3 expression on ...
Parent report indicates attention and affective problems as well as emotional reactivity. Extremely low motor skills are reported on the VABS (Motor Standard Score = 40) and patient has below average receptive language (PPVT-4 Standard Score = 84). Parent report about patient’s social ...
Coal char reactivity is described in detail, using models for carbon heterogeneous chemistry, pore struture, and mass transport previously developed at PSI. Volatile release is handled in a semi-empirical manner, and potential gas phase reactions between fuel and oxygen in the bubbles are allowed. ...
Cells use cellular transport to move molecules both in and out of the cell. The molecules that are moved can be nutrients, ions, water, waste products or large particles of food. The type of transportation used is determined by the type of particles th...