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Jlenok [28]
3 years ago
11

PLEASE HELP!!!

Chemistry
1 answer:
Romashka-Z-Leto [24]3 years ago
7 0

Answer:

43.76 g = 0.04376 Kg

Explanation:

The equation of the reaction is given as;

H2 + Cl2 --> 2HCl

From the equation;

1 mol of Cl2 produces 2 mol of HCl

Converting to mass;

Mass = Number of mol * Molar mass

Cl2;

Mass = 1 mol * 70.906 g/mol = 70.906 g

HCl;

Mass = 2 mol * 36.458 g/mol = 72.916 g

This means;

70.906 g of Cl2 produces 72.916 g of HCl

x g of Cl2 would produce 45g of HCl

70.906 = 72.916

x = 45

x = 45 * 70.906 / 72.916

x = 43.76g

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Please choose the correct number (associated with the vocab word) from the drop down menu that matches the definition
andrew11 [14]

Answer:

1. succession

2. exponential growth

Explanation:

1. Ecological succession is how biological communities change, re-structure and re-assemble over time, usually after some change or disturbance, or occupation of a new habitat. Ecological succession usually starts with a very simplistic structure, with some founder species that begin, then over time (it could be 10 years, it could be millions of years), the population grows in complexity and develops.

2. Exponential growth refers to a specific pattern of growth that occurs when resources are not limited. This pattern is when the size of the population is always increasing at a greater and greater rate. The best example is in bacteria. When they are in favourable conditions, the cells keep dividing, doubling every day, leading to exponential growth until nutrients become limited and growth slows.

6 0
3 years ago
How many moles of HNO3 are present in 697 grams of HNO3?
katrin [286]

Answer:

Explanation:

given mass = 697 g

molar mass = mass of H × mass of N × 3 × mass of O

= 1 × 14 × 3 × 16 = 672 g

no. of moles = given mass / molar mass = 697 / 672 = 1.03 moles

Hope this helps

plz mark as brainliest!!!!!!

4 0
3 years ago
Group 1A element sodium combines with Group 7A element chlorine to form sodium chloride or table salt. Based on this information
Ymorist [56]
The answer is Na < Cl

Chlorine is more electronegative than sodium because this follows the trend of the periodic table. The trend states that an element's electronegativity increases from left to right of a period and bottom to up of a group. Since sodium and chlorine are from the same period, and chlorine is at the right of sodium, chlorine is more electronegative. 
8 0
3 years ago
Water and minerals move up the xylem because of a vacuum created by _____.
Galina-37 [17]

Answer:

The right answer is B) evaporation

Explanation:

Transpiration occurs at the leaf surface which is the loss of water due to the evaporation. This phenomenon works as trigger of water and mineral movement above to the xylem. Due to the evaporation of water at the leaf, negative pressure is created at the surface of leaf. Tension is produced which results in the pull of water from roots up to the xylem vessels.  

4 0
3 years ago
My teacher is being weird about it?? every answer i put is wrong someone please help
Kruka [31]
Answer is 146. G/mol
7 0
3 years ago
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