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Scorpion4ik [409]
3 years ago
11

Which substance has a giant covalent structure and contains atoms of more than one element?A diamondB graphiteC methaneD sand

Chemistry
1 answer:
marysya [2.9K]3 years ago
4 0

which substance has a giant covalent structure and contains atoms of more than one elements?

Explanation:

answer:methane

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The density of a 0.75M NaOH solution is 1.1g/ml. Calculate the mass percent of NaOH in the solution
Slav-nsk [51]

Answer:

2.73%

Explanation:

Molarity of NaOH = 0.75 M

Density of solution = 1.1 g/mL

Mass percent of NaOH = ?

Solution:

Number of moles of NaOH = 0.75 mol    from 0.75 mol/L

Mass of NaOH = number of moles × molar mass

Mass of NaOH = 0.75 mol × 40 g/mol

Mass of NaOH =  30 g

Mass of solution:

d = m/v

1.1 g/ mL = m/ 1000 mL

m = 1100 g

Percentage of NaOH:

% NaOH = mass of solute / mass of solution × 100

% NaOH =  30 g/ 1100 g × 100

% NaOH = 2.73%

5 0
3 years ago
How many moles of oxygen are in 2.00 moles of NaCIO4?​
Klio2033 [76]

Answer: 8 Moles of Oxygen

Explanation: The formula shows that there are (exactly) 4 oxygen atoms in each mole or formula unit. Therefore 4 * 2.00 = 8.

3 0
3 years ago
How many atoms are in 10.0 moles of titanium
Tema [17]
The answer should be 479 i could possibly be wrong but that’s what i got because one mole is 47.90 grams
8 0
2 years ago
Air contains nitrogen, oxygen, argon, and trace gases. Ifthe partial pressure of nitrogen is 592 mm Hg, oxygen is160 mm Hg, argo
Katena32 [7]

Answer:

760 mmHg

Explanation:

Step 1: Given data

  • Partial pressure of nitrogen (pN₂): 592 mmHg
  • Partial pressure of oxygen (pO₂): 160 mmHg
  • Partial pressure of argon (pAr): 7 mmHg
  • Partial pressure of the trace gas (pt): 1 mmHg

Step 2: Calculate the atmospheric pressure

Since air is a gaseous mixture, the atmospheric pressure is equal to the sum of the gases that compose it.

P = pN₂ + pO₂ + pAr + pt = 592 mmHg + 160 mmHg + 7 mmHg + 1 mmHg = 760 mmHg

6 0
3 years ago
Compound that contains a terminal carbonyl?
malfutka [58]

Many compunds have a terminal carbonyl

Aldehyde, Ketone, Carboxylic acid, Amide, Imide, Acid anhydride are the first that come to my mind.

7 0
3 years ago
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