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 […]
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 […]
How do I calculate density?
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 can make sperm not to reach the egg?
What can make sperm not to reach the egg? The most common problems include: Fallopian tube obstruction. Blocked or scarred fallopian tubes that prevent sperm from reaching the egg are a frequent cause of infertility, especially among African Americans. Irregular uterine shape. Ovulation disorder. Male factor. What to do if a girl gets pregnant by […]
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 […]
How do you tell if it is a niche?
How do you tell if it is a niche? If you’re struggling to decide, or you need more data to work with, use the following five steps to find your niche. Identify your interests and passions. This may be something you’ve already done. Identify problems you can solve. Research your competition. Determine the profitability of […]
What are the two types of local winds?
What are the two types of local winds? The main types of local winds are: Sea breezes and land breezes, Anabatic and katabatic winds, and Foehn winds. What is local winds give examples? The local winds include the sea and the land breeze created due to the pressure difference between the air over the sea […]
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 effect of molecular weight on melting and boiling points of alkanes?
What is the effect of molecular weight on melting and boiling points of alkanes? Their melting and boiling points of alkanes are relatively low. The higher the molecular weight (the greater the number of carbons), the higher the boiling point. What is the major use of alkanes? Use of Alkanes Alkanes are important raw materials […]