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2 years ago

Which of the following metals will react with water to produce a metal hydroxide and hydrogen gas? (2 points) Mg Li Al Pb

1 answer:

7 0

Technically, with the right conditions and catalyst(s), all of the metals will react with water to form a metal hydroxide and hydrogen gas. However, at room temperature and atmospheric pressure, lithium is the only metal that will undergo the reaction to a significant extent.

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A compound is composed of 13% carbon, 4.3% hydrogen, 30.4% nitrogen, and 52.2% oxygen. The mystery compound has a molar mass of

vredina [299]

Answer:

C₂H₈N₄O₆ is the molecular formula for the compound

Explanation:

Data from the problem:

13 g of C in 100 g of compound

4.3 g of H in 100 g of compound

30.4 g of N in 100 g of compound

52.2 g of O in 100 g of compound

Firstly we determine, the mass of each in 184 g of compound, which is 1 mol

(13 g / 100 g) . 184 g = 24 g C

(4.3 g / 100 g) . 184 g = 7.91 g H ≅ 8 g H

(30.4 g / 100 g) . 184 g = 56 g N

(52.2 g / 100 g) . 184 g = 96 g O

And now, we divide the mass by the molar mass of each to determine the moles:

24 g C / 12 g/mol = 2 mol C

8g H / 1 g/mol = 8 mol H

56 g N / 14 g/mol = 4 mol N

96 g O / 16 g/mol = 6 mol O

So the molecular formula of the compound is C₂H₈N₄O₆

8 0

2 years ago

Dosage calculation order: 3 mg available: 2 mg per 6 ml how many ml will be given?

Anna35 [415]

9ml will be given for the case of dosage calculation order: 3 mg available: 2 mg per 6 ml

Conversion factors are necessary for dosage calculation, such as when translating from pounds to kilograms or liters to milliliters. This approach, which is straightforward in design, enables physicians to deal with different units of measurement and convert factors to arrive at the solution.

dosage calculation techniques serve as a second or third check on the accuracy of the previous computation techniques. Dimensional Analysis, Ratio Proportion, and Formula or Desired Over Have Method are the three main approaches for dosage calculation. dosage calculations are frequently prescribed and labeled based on their weight or, for solutions, their strength, which is the amount of weight dissolved or suspended in a given volume.

To learn more about dosage calculation please visit -
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3 0

1 year ago

How does the behavior of the water molecules change as the pan of water is heated?

VladimirAG [237]

The behavior of the water molecules change as the pan of water is heated, As the water is heated, the water molecules move faster and farther apart. The molecules change as the water is heated and the water molecules move faster and farther.<span>
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5 0

3 years ago

The empirical formula of a group of compounds is CHCl. Lindane, a powerful insecticide, is a member of this group. The molar mas

Sergeeva-Olga [200]

Answer:

Explanation:

since, n = molar mass / empirical formula mass

Empirical formula mass = Total mass of atoms present in empirical formula

CHCl = 12+1+35.5

= 48.5

Given, Molar mass = 290.8 g.

So, n = 290.8/48.5

= 5.995 , that is approx 6.

So, Molecular formula = n × Empirical formula

= 6 × CHCl

= $C_{6}H_{6}Cl_{6}$

So, Number of C = 6

3 0

3 years ago

The electron-domain geometry of a carbon-centered compound ch4 is tetrahedral. the hybridization of the central carbon atom is _

Nata [24]

The hybridization of the central carbon compound CH4 tetrahedral is
SP^3 hybridization

In tetrahedral molecular geometry a central atom is located at the center with 4 substituent that are located at the corners of tetrahedron. Example in methane molecules is made up of b equally spaced sp^3 hybrid orbital forming bond angle of 109.5

5 0

3 years ago