Answer:
<em>Heat</em>
Explanation: When matter is heated enough, the molecules move faster and with greater energy. If enough heat is added, a solid can become liquid and a liquid can become gas. In the same way, molecules slow down when they are cooled.
Nonvolatile<span>, transparent crystalline solid that is nontoxic, dissolves quietly in water, and is ... main types: ionic bonds, </span>covalent bonds, and metallic bonds. ... as hexane, the attractions between the non-polar molecules<span> of the liquid and the ions ...</span>
Answer;
N2O (Nitrogen (i) oxide.
Explanation;
The decomposition would be; 2N2O(g) = 2N2 (g)+ O2 (g)
Which means the ratio of; N2O :N2 :O2 = 2:2:1
The volume of colorless gas is 2.5 liters, N2 is 2.5 liters and oxygen is 1.25 liters; which also gives us a ratio of; 2: 2: 1.
Alternatively; here is twice as much N2 as O2. therefore; the formula would be N2O
(nitrogen dioxide) to make 1 volume of N2 for every 2 volumes of O2.
Answer:
The volume is 1143,78 L
Explanation:
We use the formula PV=nRT. The conditions STP are 1 atm of pressure and 273K of temperature. We calculate the weight of 1 mol of CH4.
Weight 1 mol CH4= weight C+ (weight H)x4= 12 g + 1 g x4= 16 g/mol
16 g----1 mol CH4
817,5g--x=(817,5gx1 mol CH4)/16g= 51, 1 mol CH4
PV=nRT V=(nRT)/P
V= (51,1 mol x 0,082 l atm/K mol x 273 K)/1 atm
V= 1143,78 liters
Answer:
A. From sense organs concentrated in their heads.
Explanation:
Hello,
Since animals with radial symmetry have body parts arranged around a central point, they have lines of symmetry. Due to the circular assortment of their parts, radially symmetrical animals do not have distinct front or back ends but they have a central head, that's why they must focus their senses into the head to get information.
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