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Decorate your home, get cracking on that gift list or give yourself a well-deserved treat.
Sodium percarbonate or sodium carbonate peroxide is a chemical substance with empirical formula Na 2 H 3 C 2 O 6.It is an adduct of sodium carbonate ("soda ash" or "washing soda") and hydrogen peroxide (that is, a perhydrate) whose formula is more properly written as 2 Na 2 CO 3 · 3 H 2 O 2.
The first Lowe's store, Mr. L.S. Lowe's North Wilkesboro Hardware, opened in North Wilkesboro, North Carolina, in 1921 by Lucius Smith Lowe. [8] After Lowe died in 1940, the business was inherited by his daughter, Ruth Buchan, who sold the company to her brother, James Lowe, for $4,200, [ 9 ] that same year.
Laundry detergent fluorescing under ultraviolet light. Optical brighteners, optical brightening agents (OBAs), fluorescent brightening agents (FBAs), or fluorescent whitening agents (FWAs), are chemical compounds that absorb light in the ultraviolet and violet region (usually 340-370 nm) of the electromagnetic spectrum, and re-emit light in the blue region (typically 420-470 nm) through the ...
Levelers, second class brighteners (e.g. allyl sulfonic acid, formaldehyde chloral hydrate) in concentration 0.0045-0.15 g/L produce (in combination with carrier brighteners) brilliant deposit. [ 5 ] Auxiliary brighteners (e.g. sodium allyl sulfonate, pyridinium propyl sulfonate) in concentration 0.075-3.8 g/L. [ 5 ]
Shop the best melasma treatments and serums for hyperpigmentation. Expert-recommended products include La Roche Posay, Neutrogena, SkinCeuticals and more.
The lighthouse was designed by Alexander Mitchell, an Irish engineer who developed the screwpile concept.It was the first screwpile lighthouse ever to be lit. Although construction of the Maplin Sands Light on the northern bank of the Thames estuary had started before Wyre Light, the latter was completed in a much shorter period of time. [4]
High-altitude clouds on Neptune have been observed casting shadows on the opaque cloud deck below. There are high-altitude cloud bands that wrap around the planet at constant latitudes. These circumferential bands have widths of 50–150 km and lie about 50–110 km above the cloud deck. [90]
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