science
- 👍
- 👎
- 👁
- ℹ️
- 🚩
-
- 👍
- 👎
- ℹ️
- 🚩
-
- 👍
- 👎
- ℹ️
- 🚩
-
- 👍
- 👎
- ℹ️
- 🚩
-
- 👍
- 👎
- ℹ️
- 🚩
Respond to this Question
Similar Questions
-
use the mole quick check
1. The atomic mass is equivalent to 1/12 of the mass of a neutral atom of which element? a. gold b. hydrogen c. carbon d. oxygen 2. for an element, how does Avogadro’s number connect the atomic in the macroscopic scales? a. it
-
Science
According to the law of conservation of mass, which statement about chemical reactions is always true? The number of atoms of each element in the reactants is the same as the number of atoms of each element in the products. The
-
Chemistry
1. An atom has 3 protons, 4 neutrons, and 3 electrons. Use the periodic table to determine which atom would have similar chemical properties to this atom. A)12 protons, 12 neutrons, and 12 electrons B)11 protons, 11 neutrons, and
-
chemistry
Question 1. A Compound Containing 3 Atoms Of Carbon & 8 Atoms Of Hydrogen Is Combined In A Reaction With Oxygen Molecules. The 2 End Products Of This Equation Are Carbon Dioxide &water. What Element Should You Look At 1st In
-
Physics
100g of radioactive element X are placed in a sealed box. The half-life of this isotope of X is 2 days. After 4 days have passed, what is the mass of element X in the box? b) If the box is completely evacuated (perfect vacuum),
-
chemistry
When magnesium is heated in air, it reacts with oxygen to form magnesium oxide. 2Mg + O2 --> 2MgO If the mass of the magnesium increases by 0.335 g, how many grams of magnesium reacted? A. 0.882 B. 0.441 C. 0.509 D. 1.02 E. Not
-
chemistry
Examine the scenario. A magnesium (Mg) atom gives one electron to two atoms of another element, and takes on a 2+ charge. The two atoms of the other element each form a 1− charge. As a result, the magnesium ion and the two ions
-
Chemistry
Which of the following are key parts of Dalton's Atomic Theory (Click the 4 that apply)? (1 point) All elements are composed of tiny indivisible particles called atoms*** Atoms of the same element are identical. The atoms of any
-
Chemistry (The Composition of an Atom)
In 1808, John Dalton wrote his atomic theory of matter. The following is a list of points from that theory. If it is still considered true today, label it true. If it is not considered true today, label it false. 1)Atoms cannot be
-
Chemistry
Name and give the symbol for each of the following: a)the element in period 3 group 2 = Magnesium = Mg b)the halogen in period 4 = Bromine = Br c)the element in period 6 and group 11 = Gold = Au d)the akali metal in period 2 =
-
Science
Luster, Malleable, Ductile, Conductor, Solid at room temperature: Which element could be described by the list of properties above? A) magnesium B) mercury C) neon D) phosphorus***
-
chemistry
How many atoms of each element are in this compound? MgBr2 A. 2 magnesium atoms and 2 bromine atoms B. 2 magnesium atom and 2 bromine atoms C. 2 magnesium atoms and 1 bromine atom D. 1 magnesium atom and 2 bromine atoms