A1 The diagram below shows the percentages of common elements found present in Earth's crust.aluminium, 8.1%iron, 5.0%一calcium, 3.6%sodium, 2.8%silicon potassium, 2.6%28%magnesium, 2.1%others, 0.8%Use elements from the diagram to answer the following questions.(a) Which element is extracted...
Why is the sodium element represented by Na? Why are hydrogen bonds the strongest of the intermolecular forces? What do melting and evaporation have in common? What is the percentage of sodium in pure table salt? What type of chemical bond holds the Na+ and Cl- ions together in table ...
Theadrenal glandsmake hormones that help control the way the body uses food, the levels of minerals such as sodium and potassium in the blood, heart rate, blood pressure and other functions involved in stress reactions. Adrenal cortex The adrenal cortex is the outside part of theadrenal gland...
What is the name of the Ne element?Sodium is in the first representative group. An atom of sodium has ... valence electronsWhat are the electrical properties and physical properties of covalently bonded solids?What are the requirements for a solid ionic conductor? Provide an ...
Element name Oxygen (O) Silicon (Si) Aluminum (Al) Iron (Fe) Calcium (Ca) Sodium (Na) Potassium (K) Magnesium (Mg) Who was Democritus? What did he do? WARM UP Read p Review of Elements #1-20 Good Luck!! FabulousFunFriskyDr. Evil ...
Sodium Hydroxide323 °C613.4 °F Sodium Hypochlorite18 °C64.4 °F Stearic Acid71.2 °C160.2 °F Sucrose186 °C366.8 °F Sulfuric Acid10.31 °C50.558 °F Toluene-95 °C-139 °F Water, Fresh0 °C32 °F Water, Sea-2.38 °C27.7 °F...
a含汞、钠等有害元素,不环保 Including mercury, sodium and so on harmful element, not environmental protection [translate] aCentral to this is our commitment to consistency which helps us to deliver predictable outcomes for our customers, regardless of their building type, location or the sector ...
after element symbols represent the number of atoms. If there is no subscript, it means one atom is present in the compound. Read on to find out the molecular formula of common chemicals, such as salt, sugar, vinegar, and water, as well as representational diagrams and explanations for ...
What are common uses of curium?Curium:Curium is an element with no stable isotopes. It was created in a lab at the University of California Berkeley in 1944 by a team of physicists involved in the identification and production of several new elements....
Answer to: Select the element that is not one of the four most common elements in living matter. A) carbon B) hydrogen C) nitrogen D) oxygen E)...