A 8.07 g sample of HCN is found to contain 0.299 g of H and 4.18 g of N. Find the mass of carbon in a sample of HCN with a mass of 3.28 g .

Answer: Cr (chromium) has multiple oxidation states, while Ca (calcium) only has one.

Explanation: You only specify with a Roman numeral when the metal/positively charged ion in the compound has multiple charges. Chromium is a transition metal, and most transition metals have multiple charges. Calcium is a group 2 metal so it will only have a charge of +2.

Answer: 7 pills

Explanation:

A day is 24 hours so you multiply 12 x 2 and do the same to 525, 525 x 2 = 1050

then divide 1050 by 150 and you get 7

1. "Fn" stands for "Normal Force," "Fg" for "Gravity Force," "Ff" for "Force Friction," and "A" for "Applied Force." 2. As a result of the friction, which causes the ball to stop. 3. The reason the ball rolls is due to the force that is imparted to it.

The definition of force is: The push or pull on a massed object changes its velocity. An external force is an agent that has the power to alter the resting or moving condition of a body. It has a direction and a magnitude. A force that opposes this motion of the hands is activated when they brush against one another. Frictional force is the force resisting motion applied in the direction perpendicular to the direction of motion of the hands.

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Answer:She became one of the six space tourists transported by Blue Origin's New Shepard spacecraft, proving that there is room in the universe for all those who strive to reach it. The ten-minute trip marked the fifth successful manned mission for Jeff Bezos' company, but the feat of a lifetime for Echazarreta.

Explanation:

Answer:

0.0970 moles NaCl

Explanation:

To find the amount of moles, you need to multiply the mass (grams) by the molar mass of NaCl. The molar mass exists as a ratio that compares the mass of a substance per every 1 mole. The molar mass is made up of the individual atomic masses of every element in the molecule. The final answer should have 3 sig figs like the given value (5.67 = 3 sig figs).

Atomic Mass (Na): 22.770 g/mol

Atomic Mass (Cl): 35.453 g/mol

Molar Mass (NaCl): 22.990 g/mol + 35.453 g/mol

Molar Mass (NaCl): 58.443 g/mol

 5.67 grams NaCl                 1 mole
----------------------------  x  -------------------------  =  0.0970 moles NaCl
                                        58.443 grams

The heat capacity of liquid is  1.53 J/ g°C

Heat capacity measures the energy required to raise temperature of a unit mass of a substance by a unit degree

Formula used:

          Q = m × c ×  ΔT

               = m × c × ( T₂ - T₁ )

where,

Q = Amount of heat gained or lost  = 53 J

m = mass of liquid = 15 g

c = specific heat of liquid = ?

ΔT = change in temperature

T₁ = initial temperature = 10.7 °C

T₂ = final temperature = 13 °C

Substituting the values in the formula

        53 J = 15 g × c × ( 13 - 10.7) °C

         53 J = 15 g × c × 2.3 °C

             c = 53/ ( 15 × 2.3 )

                = 1.53 J/ g°C

Thus we can conclude that the heat capacity of liquid is  1.53 J/ g°C

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The calculated answer is 96.7

In the chemical process of combustion, an object quickly combines with oxygen to produce heat. The original substance is referred to as the fuel, and the oxygen's source as the oxidizer. Although it is typically a liquid for airplane propulsion, the fuel can be a solid, liquid, or gas.

In an air-burning flame of pure hydrogen, hydrogen (H2) combines with oxygen (O2) to generate water (H2O), releasing energy in the process. Instead of producing pure oxygen, hydrogen combustion in ambient air can occasionally produce a tiny amount of nitrogen oxides along with the water vapor. Hydrogen can be utilized as a fuel thanks to the energy emitted.

Methanol burns in the following way: CH3OH(l)+ 23O2(g)21CO2(g)+2H2O (l)

G= [G f CO2 (g)+2 G f H2O(l)] reaction

[Gf CH3OH(l)+23Gf O2 (g)]

[−394.36+2(−237.13)]

− [−166.27+0]

=−702.35kJmol−1

How well Gibbs free energy is converted into meaningful labor

= "H reaction," "G reaction," and "100."

= −702.35×100/−726

=96.7

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The number of cups of coffee in  a 2010-gal cup of coffee  is 16086 cups of coffee

The  number of cups of coffee in  a 2010-gal cup of coffee is calculated as follows:

Number of cups of coffee = volume of 2010-gal in ml/473 ml

Volume of large cup of coffee = 2010-gal

Number of mL in 1 gal = 3785.41 mL

2010 gal in mL = 2010 * 3785.41

2010 gal in mL = 7608674.1 mL

Number of cups of coffee = 7608674.1 mL/473 mL

Number of cups of coffee = 16086 cups of coffee

In conclusion, the number of cups pf coffee in 2010 gal is obtained using the conversion factor between gal and mL

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Answer:

see the step by step answer is up

Answer:15

Explanation:

The diagrams of a chemical compound give an idea of the structure and composition of the compound.

Because a molecular formula often does not accurately describe a single molecule, structural formulae must be created for organic compounds. Isomers are different compounds with the same chemical formula, and the abundance of organic isomers is a reflection of carbon's exceptional plasticity in creating stable bonds with both other elements and itself.

We refer to such compounds as constitutional isomers when the atoms that make up the molecules of various isomers are linked together in fundamentally different ways. The formulae share a similar structural element and represent all known and hypothetical C4H10O compounds. No double or triple bonds and no rings exist in any of these structures.

Therefore, the diagrams of a chemical compound give an idea of the compound.

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The answer will be 3,279 km/hr.

Pedometer is a device used to measure the number of steps covered by a person.

Pedometer sensor = Step count and IMS sensor used.

Peak Speed rate recorded in the pedometer = 91.1 cm/s

1 Km = 100 * 1000 cm

1 hour = 60 * 60 = 3600 sec

Now, 1 cm = 10^-5 km

1 sec = 0.00027777777 hour

speed = 91.1 cm /s = 91.1 * 10^-5 / 0.00027777777 km/hour

speed = 3.279 km/hr

Steve's peak speed rate in km / hr would be 3.279 km/hr

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The reaction of -COOH and -NH₂ creates a peptide bond.

Peptide bond is defined as a type of amide type covalent chemical bond which is formed between the two simultaneous molecules of amino acid in such a way that carboxyl group of one molecule of amino acid get attached to the NH₂ group of another molecules of Amino acid.

Peptide bond is formed by the elimination of water molecules.

The hydroxyl group from the carboxyl and proton hydrogen cation from NH₂ group.

Thus, we concluded that the reaction of -COOH and -NH₂ creates a peptide bond by losing—OH from the -COOH and H+ from the -NH₂.

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Answer:

D. If I brush my teeth, I will get fewer cavities than if I don't brush my

teeth.

Explanation:

Answer:

27.3 g HCl

Explanation:

**Be sure to arrange the conversion in a way that allows for the cancellation of units.

(Step 1)

Convert milliliters (mL) to liters (L).

1,000 mL = 1 L

 250 mL                1 L
---------------  x  -----------------  =  0.25 L
                         1,000 mL

(Step 2)

Use the molarity ratio to find the moles of HCl.

Molarity = moles / L

3 M = moles / 0.25 L

0.75 = moles

(Step 3)

Convert moles to grams using the molar mass of HCl.

Molar Mass (HCl): 1.008 g/mol + 35.453 g/mol

Molar Mass (HCl): 36.461 g/mol

0.75 moles HCl             36.461 g
--------------------------  x  --------------------  =  27.3 g HCl
                                         1 mole

Answer:

ans is b 62 g/mole

because mass of h is 2 an carbon is 12 and 3 atoms of oxygen in 16*3 =48 adding all we get 62 g/mole

Taking into account the reaction stoichiometry, the correct answer is option E. when 25.0 g of Zn reacts, 52 grams of ZnCl₂ are produced.

In first place, the balanced reaction is:

Zn + 2 HCl → H₂ + ZnCl₂

By reaction stoichiometry (that is, the relationship between the amount of reagents and products in a chemical reaction), the following amounts of moles of each compound participate in the reaction:

The molar mass of the compounds is:

Then, by reaction stoichiometry, the following mass quantities of each compound participate in the reaction:

The following rule of three can be applied: if by reaction stoichiometry 63.37 grams of Zn form 136.27 grams of ZnCl₂, 25 grams of Zn form how much mass of ZnCl₂?

mass of ZnCl₂= (25 grams of Zn× 136.27 grams of ZnCl₂)÷ 63.37 grams of Zn

mass of ZnCl₂= 53.76 grams

This mass can be considered approximately equal to 52 grams. Finally, the correct answer is option E. when 25.0 g of Zn reacts, 52 grams of ZnCl₂ are produced.

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The tuna fish that swam at a constant velocity of 1.2 meters per second toward a smaller fish in 7 seconds swam 8.4m.

The distance moved by a moving body can be calculated by multiplying the speed by the time taken as follows:

Distance = speed × time

According to this question, a tuna swam at a constant velocity of 1.2 meters per second toward a smaller fish. If the tuna swam toward the smaller fish for 7.0 seconds, the distance is calculated as follows:

Distance = 1.2m/s × 7s

Distance = 8.4m

Therefore, the tuna fish that swam at a constant velocity of 1.2 meters per second toward a smaller fish in 7 seconds swam 8.4m.

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Answer:

i think u have to mutiply but i might be confused

i think the answer is 8.4 im not sure tho

Explanation:

Answer:

Radium

Explanation: