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a_sh-v [17]
4 years ago
10

10 POINTS!!

Chemistry
2 answers:
Stella [2.4K]4 years ago
3 0

Answer:

I say A & B

Explanation:

You can test a hypothesis, and it can have an output = False.

marysya [2.9K]4 years ago
3 0

Answer:It must be testable

Explanation:Testability is the primary feature of a good hypothesis.

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4. Which of the following is NOT a basic function of a cell?A. RespirationB. IngestionC. SleepingD. Reproduction
Yanka [14]

Explanation:

C. Sleeping

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8 0
3 years ago
Read 2 more answers
PLEASE HELP??<br> Describe how the periodic table differentiates between metals and nonmetals.
Dovator [93]
Metals are the majority of the periodic table. Also, they are on the left side of the periodic table. The no metals are on the right side of periodic table.
Hope I Helped!
4 0
3 years ago
When 16.4 g of steam at 100°C condenses how much heat is released?
OLEGan [10]

Answer:

37064 J

Explanation:

Data Given:

mass of Steam (m) = 16.4 g

heat released (Q) = ?

Solution:

This question is related to the latent heat of condensation.

Latent heat of condensation is the amount of heat released when water vapors condenses to liquid.

Formula used

            Q = m x Lc . . . . . (1)

where

Lc = specific latent heat of condensation

Latent heat of  vaporization of water is exactly equal to heat of condensation with - charge

So, Latent heat of  vaporization of water have a constant value

Latent heat of  vaporization of water = 2260 J/g

So

Latent heat of condensation of water will be = - 2260 J/g

Put values in eq. 1

          Q = (16.4 g) x (- 2260 J/g)

          Q = - 37064 J

So,  37064 J of heat will be released negative sign indicate release of energy

4 0
4 years ago
Algae and other phytoplankton are the major producers of the earth's:
vredina [299]

Answer:

oxygen

Explanation:

pls mark me brainliest right

4 0
3 years ago
Ammonia (NH3) reacts with oxygen (O2) to produce nitrogen monoxide (NO) and water (H2O). Write and balance the chemical equation
bekas [8.4K]

Answer:

There is 1.6 L of NO produced.

Explanation:

I assume you have an excess of NH3 so that O2 is the limiting reagent.

<u>Step 1:</u> Data given

2.0 liters of oxygen reacts with ammonia

<u>Step 2:</u> The balanced equation

4NH3 + 5O2 → 4NO + 6H2O

For 4 moles of NH3, we need 5 moles of O2 to produce 4 moles of NO and 6 moles of H2O

Consider all gases are kept under the same conditions for pressure and temperature, we can express this mole ratio in terms of the volumes occupied by each gas.

This means:  when the reaction consumes  4  liters of ammonia (and 5 liters of oxygen) it produces  4  liters of nitrogen  monoxide

Now, when there is 2.0 liters of oxygen consumed, there is 4/2.5 = 1.6 L of nitrogen monoxide produced.

There is 1.6 L of NO produced.

4 0
4 years ago
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