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2 years ago

CH4 and CO₂ are the chemical formulas for:

Chemistry

1 answer:

nadya68 [22]2 years ago

6 0

Answer:

CH4 = Methane

CO2 = Carbon dioxide

<h3>Hope this Helps!!</h3><h3>Hope this Helps!!:)</h3>

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Subject: science <br><br>what is radiation?

valina [46]

Answer:

Definition: - Radiation is the emission or transmission of energy in the form of waves or particles through space or through a material medium.

Example: A burning candle emits radiation in the form of heat and light.

6 0

2 years ago

Gold has a density of 19.3 g/cm^3. If you have a

Irina18 [472]

Answer:

The answer is

Explanation:

The mass of a substance when given the density and volume can be found by using the formula

<h3>mass = Density × volume</h3>

From the question

volume = 44.9 cm³

density = 19.3 g/cm³

We have

mass = 19.3 × 44.9

We have the final answer as

Hope this helps you

5 0

3 years ago

What would be your best course of action if exposed to this hazard?

Olenka [21]

Answer: Option C) Rinse the affected area with cool water for 10-15 minutes.

Explanation:

Once exposed to burns, whether chemical or heat, rinse the affected area of the body with cool water, as water is known to dissolve all burning particles attached to the skin, and cool off the blood vessels lying beneath the burned surface.

Unlike other options provided, rinsing affected area with cool water is the best first aid for skin burns

6 0

2 years ago

A 3.00-L flask is filled with gaseous ammonia, NH3. The gas pressure measured at 27.0 ∘C is 2.55 atm . Assuming ideal gas behavi

Whitepunk [10]

Answer : The mass of ammonia present in the flask in three significant figures are, 5.28 grams.

Solution :

Using ideal gas equation,

$PV=nRT\\\\PV=\frac{w}{M}\times RT$

where,

n = number of moles of gas

w = mass of ammonia gas = ?

P = pressure of the ammonia gas = 2.55 atm

T = temperature of the ammonia gas = $27^oC=273+27=300K$

M = molar mass of ammonia gas = 17 g/mole

R = gas constant = 0.0821 L.atm/mole.K

V = volume of ammonia gas = 3.00 L

Now put all the given values in the above equation, we get the mass of ammonia gas.

$(2.55atm)\times (3.00L)=\frac{w}{17g/mole}\times (0.0821L.atm/mole.K)\times (300K)$

$w=5.28g$

Therefore, the mass of ammonia present in the flask in three significant figures are, 5.28 grams.

8 0

3 years ago

What conclusion can you make about a hypothesis that contradicts an existing theory?

Naddika [18.5K]

What are you making a hypothesis for

6 0

3 years ago