Is all green glass uranium? Perhaps the most reliable way to identify the presence of uranium in the glass is to expose it in the dark to a source of ultraviolet light (e.g., a black light). If the glass glows a rich green color, it contains uranium. Why is depression glass called depression? Depression glass […]
What type of acid is sodium hydroxide?
What type of acid is sodium hydroxide? sodium compounds Sodium hydroxide (NaOH) is a corrosive white crystalline solid that readily absorbs moisture until it dissolves. Commonly called caustic soda, or lye, sodium hydroxide is the most widely used industrial alkali. It is highly corrosive to animal and vegetable tissue. The alkaline solutions it forms… Is […]
What is spectrophotometer and its uses?
What is spectrophotometer and its uses? A spectrophotometer is an analytical instrument used to quantitatively measure the transmission or reflection of visible light, UV light or infrared light. Applications for specs include measurement of substance concentration such as protein, DNA or RNA, growth of bacterial cells, and enzymatic reactions. What is spectroscopy principle? What Is […]
Why can self-heating cans be used only once?
Why can self-heating cans be used only once? Answer: Self-heating food packaging is active packaging with the ability to heat food contents without external heat sources or power. Packets typically use an exothermic chemical reaction. Why self-heating cans are very expensive? Self-heating cans have dual chambers, one surrounding the other, making a self-heating food package. […]
What exercises can I do at home?
What exercises can I do at home? Keep the fuss to a minimum and stick with the basics. Lunges. Challenging your balance is an essential part of a well-rounded exercise routine. Pushups. Drop and give me 20! Squats. Standing overhead dumbbell presses. Dumbbell rows. Single-leg deadlifts. Burpees. Side planks. Is exercising 15 minutes a day […]
What is formed when two or more substances are combined?
What is formed when two or more substances are combined? Two or more elements combined into one substance through a chemical reaction form a chemical compound. All compounds are substances, but not all substances are compounds. A chemical compound can be either atoms bonded together in molecules or crystals in which atoms, molecules or ions […]
Is there a direct relationship between time in the air and the range?
Is there a direct relationship between time in the air and the range? There is no direct relationship between air time and range because when the initial angle changes, the initial velocity divides into x and y components. as x-velocity increase, the range increases up 5. What is the purpose of a motion graph? Describing […]
What color is closest to the central maximum?
What color is closest to the central maximum? Violet and blue will be seen closer to the central maximum — then green and yellow and orange and finally red, farthest from the white central maximum. a) is a diffraction source. Why is diffraction grating better than a prism? However, a diffraction grating is less sensitive […]
What is the result of wasted energy?
What is the result of wasted energy? Wasted energy is energy that is not usefully transferred or transformed. Energy is transformed into a different form that can be used. When energy is transformed or transferred only part of it can be usefully transformed or transferred. The energy that is not used in this process is […]
How many histones are in a nucleosome?
How many histones are in a nucleosome? eight proteins Do histones organize DNA? ‘Sticky’ histones keep DNA organized, but it takes a team of proteins to get them into the nucleus without causing a tangle. Cells contain two meters of DNA which, if left to its own devices, would soon end up in a knot. […]