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Brrunno [24]
3 years ago
8

In a chemical reaction, 18 grams of hydrochloric acid reacts with 20 grams of sodium hydroxide to produce sodium chloride and wa

ter. Which statement is correct?
The mass of water formed is 38 grams.

The mass of sodium chloride formed is 38 grams.

The total mass of sodium chloride and water formed is greater than 35 grams.

The total mass of sodium chloride and water formed is less than 35 grams.
Chemistry
1 answer:
Licemer1 [7]3 years ago
7 0

Answer:is it correct

Explanation:

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Morgarella [4.7K]

Answer:

A.) DNA is a double helix, and RNA is a single strand.



C.) DNA is involved only in transcription, and RNA is involved in both transcription and translation.



E.) DNA does not have uracil as a nitrogen base, but RNA does have uracil as a nitrogen base.











Explanation:

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#TheWizzer

3 0
2 years ago
Read 2 more answers
Serena is making an experiment. for that, she needs 20 grams of a 52% solution of salt. she has two large bottles of salt water:
maksim [4K]
This is a simple algebraic problem, specifically for the mixture type of problem. Let x be the mass of 40% solution and y be the mass of 70% solution. The first equation would then be:

x + y = 20 --> eqn 1

The second equation would be the mass balance shown below:

(x)(0.40) + y(0.70) = 20(0.52) --> eqn 2

Rearranging eqn 1,
x = 20 - y
Substitute this to eqn 2:

(20 - y)(0.40) + y(0.70) = 20(0.52)
Solve for y,
y = 8 grams
 
Finally, solve for x.
x = 20 - 8 = 12 grams

<em>Therefore, Serena needs 12 grams of the 40% solution and 8 grams of the 70% solution.</em>
5 0
3 years ago
Which compound contains both ionic and covalent
DedPeter [7]
(1) CaCO3 is your answer. The positive ion is \text{Ca}^{2+ and the negative radical ion is \text{CO}_3^{-}. There exists covalent bonds between the carbon and oxygen atoms in the \text{CO}_3^{-}.
6 0
4 years ago
Help please If there are 10 moles of HCl gas occupying 15L at 350°C, what is the pressure? Be sure to show the setup and
lord [1]

Answer:

P = 34.1 L

Explanation:

Given data:

Number of moles = 10 mol

Volume occupy = 15 L

Temperature = 350°C

Pressure of gas = ?

Solution:

The given problem will be solve by using general gas equation,

PV = nRT

P= Pressure

V = volume

n = number of moles

R = general gas constant = 0.0821 atm.L/ mol.K  

T = temperature in kelvin

Now we will convert the temperature.

350+273 = 623 K

by putting values,

P×15 L = 10 mol ×0.0821 atm.L/ mol.K ×623 K

P = 511.48atm.L/15L

P = 34.1 L

5 0
3 years ago
The combustion of hydrogen gas in oxygen, is it an endothermic or exothermic process? Write a chemical reaction for this process
Crank

Answer:

exothermic process because the process of association of oxygen and hydrogen is taking place..

6 0
3 years ago
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