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7nadin3 [17]
3 years ago
5

Which element is a liquid at STP? (1) bromine (3) francium (2) cesium (4) iodine

Chemistry
2 answers:
ollegr [7]3 years ago
7 0
Among the choices, bromine exists as liquid under standard temperature and pressure conditions. Unlike other diatomic molecules which exist as gases, due to its heavy molecular weight, it exists as solid. Francium and cesium are solids while iodine is gas.Answer is 1.
8_murik_8 [283]3 years ago
4 0

Answer:

1. Bromine

Explanation:

Reference Table S shows bromine’s melting point at 266 K and its boiling point as 332 K.   Standard temperature and pressure (STP) is 273 K and one atmosphere of pressure. Bromine is a liquid at STP.

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LiOH+HBr---> LiBr +h20 If you start with 10.0 grams of lithium hydroxide, how many grams of lithium bromide will be produced?
kicyunya [14]
<span>LiOH+HBr---> LiBr +h20. Moles of LiOH = 10/24 = 0.41moles. According to stoichiometry, moles of LiOH = moles of LiBr = 0.41moles. Therefore mass of LiBr =moles of LiBr x molecular weight of LiBr = o.41 x 87 = 35.67g. Hope it helps </span>
7 0
2 years ago
What is the correct 1 letter code for the amino acid sequence Glutamic Acid-Histadine-Tyrosine Select one: a. E-H-Y b. G-H-T c.
EastWind [94]

Answer:

a. E-H-Y

Explanation:

A group of three nucleotides is called a codon that codes for a specific amino acid in the protein. There are 20 essential amino acids present in human body and are required in the diet.

Each amino acid is given a one-letter code that makes the study of amino acid sequences easy. One letter code for the given amino acid sequence Glutamic Acid-Histidine-Tyrosine is E-H-Y in which E is code for Glutamic Acid, H is a code for Histidine, and Y is a code for Tyrosine.

Hence, the correct answer is "a. E-H-Y".

6 0
3 years ago
Please help !!
ozzi

Answer:

State the major concepts behind the kinetic molecular theory of gases.

Demonstrate the relationship between kinetic energy and molecular speed.

Apply the kinetic molecular theory to explain and predict the gas laws.

Explanation:

7 0
3 years ago
Read 2 more answers
When the equation __H2O2 --&gt; __H2O + __O2 Is completely balanced, the sum of all the coefficients will be A) 5 B) 8 C) 3 D) 4
kkurt [141]

Answer:

A)5

Explanation:

2H2O2 --> 2H2O + 1O2

2+2+1=5

sum=5

8 0
3 years ago
How is energy related to the change of state represented by
pychu [463]

Answer:

Energy is related to the change of state represented by the model in this way - C. Atoms lose energy as a gas changes to a solid. As a certain gas is changing its state into that of a solid material, its atoms are going to lose some energy.

Explanation: hope this helped

7 0
3 years ago
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