All categories

4 years ago

Which wave can be transmitted through empty space

Chemistry

2 answers:

Leto [7]4 years ago

5 0

Electromagnetic waves can be transferred through empty space

Liono4ka [1.6K]4 years ago

3 0

Electromagnetic waves I think

You might be interested in

What mass of hydrogen gas would be produced if 46g of sodium was reacted with water?

bezimeni [28]

Answer: 2g of H2 will be produced

Explanation:Please see attachment for explanation

4 0

3 years ago

Which bond is the longest?

Andre45 [30]

Love the profile picture tho

8 0

3 years ago

Green plants use light from the Sun to drive photosynthesis. Photosynthesis is a chemical reaction in which water H2O and carbon

Mice21 [21]

Answer:

6.2 g

Explanation:

The mass of oxygen gas produced from 8.5 g CO2 would be 6.2 g.

First, let us look at the equation of the reaction:

$6CO_2 + 6H_2O --> C_6H_1_2O_6 + 6O_2$

From the equation, 6 moles of CO2 are required to produce 6 moles of O2.

Recall that: mole = mass/molar mass

8.5 g of CO2 = 8.5/44.01 = 0.1931 mole of CO2

Since the ratio of CO2 to O2 is 1:1, 0.1931 moles of CO2 will produce 0.1931 moles of O2.

Hence, mass of oxygen produced = mole x molar mass

= 0.1931 x 32

= 6.2 g to 2 significant digits.

5 0

3 years ago

(a) the characteristic odor of pineapple is due to ethyl butyrate, a compound containing carbon, hydrogen, and oxygen. combustio

ella [17]

By stoichiometry and assume that:

CxH2xOy + zO2 -> xCO2 + xH2O

CO2: 9.48/44 = 0.215 mmol
H2O: 3.87/18 = 0.215 mmol
mass of C = 0.215 * 12 = 2.58 mg
mass of H = 0.215 * 2 * 1 = 0.43 mg
mass of O in ethylbutyrate = 4.17 - 2.58 - 0.43 = 1.11 mg
So C/O = 2.58/1.11 ≈ 3

Thus we have C3H6O

8 0

3 years ago

Read 2 more answers

A student mixes a 10.0 mL sample of 1.0 M NaOH with a 10.0 mL sample of 1.0 M HCl in a polystyrene container. The temperature of

ElenaW [278]

Answer:

The experimental value of ΔH is -50 kJ/mol

Explanation:

Step 1: Data given

Volume of 1.0 M NaOH = 10.0 mL = 0.01 L

Volume of 1.0 M HCl = 10.0 mL = 0.01 L

Temperature before mixing = 20 °C

Final temperature = 26 °C

Specific heat of solution = 4.2 J/g°C

Density = 1g/mL

Step 2: Calculate q

q = m*c*ΔT

⇒ with m = the mass

⇒ 20.0 mL * 1g/mL = 20 grams

⇒ c = specific heat of solution = 4.2 J/g°C

⇒ ΔT = T2 -T1 = 26 -20 = 6 °C

q = 20g * 4.2 J/g°C * 6°C

q = 504 J

ΔHrxn = -q ( because it's an exothermic reaction)

ΔHrxn = -504 J

Step 3: Calculate number of moles

Moles = Molarity * volume

Moles = 1M *0.01 L = 0.01 moles

Step 4: Calculate the experimental value of ΔH

ΔHrxn = -504 / 0.01 mol = -50400 J/mol = -50.4 kJ/mol

The experimental value of ΔH is -50 kJ/mol

6 0

4 years ago