You would have 24, but check to be sure
Answer:
K2CO3 = K2O + CO2
Explanation:
In a chemical equation, the number of atoms on the left needs to be balanced with the number of atoms on the right, and there has to be the same number of the same *type* of atom on both sides as well.
On the left:
2 K
1 C
3 O
and on the right,
2 K
1 O
On the right, there are a few atoms missing, specifically, 1 C and 2 O.
The missing atoms then should be added to the side missing the atoms, preferably in a stable molecule. Luckily, CO2 contains exactly 1 C, and 2 O s, and is quite stable. So, a "CO2" has to be added on the left
To determine the amount of heat the block has absorbed, we simply multiply the mass of the block of ice to the heat of fusion of water which is given above. We calculate as follows:
Heat = 20.0 kg (3.34 x 10^5 J/kg)
Heat = 6680000 J
Hope this helped.
The law that regulates access to information about chemicals used in workplaces is called OSHA's Hazard Communication Standard.
<h3>What is the OSHA Hazard communication standard?</h3>
In a workplace, all employees should be introduced to dangers connected with exposure to hazardous chemicals. They should get a Material safety data sheet (MSDS) from the manufacturers about the chemicals. Employees can file a complaint in their local OSHA office if they think that their employer isn’t complying with the OSHA STANDARDS and for employees’ safety, the name of the complainant can be kept a secret. It is made for the safety of employees by enforcing some standards and rules.
To learn more about OSHA Hazard communication standards, visit: brainly.com/question/27993242
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Answers:
(a) 508 THz; (b) 337 zJ
Step-by-step explanation:
The formula relating the frequency (f) and wavelength (λ) of a photon is
fλ = c Divide both sides by λ
f = c/λ
The formula for the energy of a photon is
E = hf
Data:
c = 2.998 × 10⁸ m·s⁻¹
λ = 590 nm
h = 6.626 × 10³⁴ J·s
Calculations:
(a) <em>Frequency
</em>
f = 2.998 × 10⁸/(590 × 10⁻⁹)
= 5.08 × 10¹⁴ s⁻¹
= 508 × 10¹² s⁻¹
= 508 THz
(b) <em>Energy
</em>
E = 6.626 × 10⁻³⁴ × 508 × 10¹²
= 3.37 × 10⁻¹⁹ J
= 337 × 10⁻²¹ J
= 337 zJ