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iren2701 [21]
3 years ago
10

Mrs. Rushing fills a balloon with hydrogen gas to demonstrate its ability to burn. Which combination could she

Chemistry
2 answers:
Mars2501 [29]3 years ago
8 0

Answer:

H2SO, and CaCO

Explanation:

kolezko [41]3 years ago
4 0

Answer:

D. Mg and HCl

Explanation:

I did this on ed

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What is the frequency of the sinusoidal graph?
Arisa [49]

Answer:

For finding frequency, we need to first find the period of the graph.

The period of a sinusoidal graph is the time interval in which it repeats its pattern.

In the graph, we can see, after 1/period time, it repeats its pattern.

Hence the period of the graph is  \pi /2.

Now we need to find its frequency 1/\pi /2

The formula for frequency is 2/\pi

This is the answer

i hope you pass the assignment

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8 0
2 years ago
Help me please omg I don’t know
Anna35 [415]

Answer:

5 1 2 4and 3 this is correct way

8 0
2 years ago
Which of these Group 14 elements has the most metallic properties? 1. C 2. Ge 3. Si 4. Sn
seraphim [82]
I would say that the answer is Sn.
C-is a non-metal
Ge-is a metalliod (consists both non-metal and metal)
Si -is a metalloid
Sn- is a pure metal 
5 0
3 years ago
Read 2 more answers
Whic number of the periodic table is the atomic number and which number is the atomic mass?
Anettt [7]

Answer:

The mass number (represented by the letter A) is defined as the total number of protons and neutrons in an atom. Consider the element helium. Its atomic number is 2, so it has two protons in its nucleus.

The atomic mass of a single atom is simply its total mass and is typically expressed in atomic mass units or amu. By definition, an atom of carbon with six neutrons, carbon-12, has an atomic mass of 12 amu.

5 0
2 years ago
Calculate the volume of a gas at a pressure of 150 kpa if its volume at 180 kpa is 1500 L
Anastaziya [24]

Answer: 1800 L

Explanation:

Given that,

Original pressure of gas (P1) = 180 kPa

Original volume of gas (V1) = 1500 L

New pressure of gas (P2) = 150 kPa

New volume of gas (V2) = ?

Since pressure and volume are given while temperature is held constant, apply the formula for Boyle's law

P1V1 = P1V2

180 kPa x 1500 L = 150 kPa x V2

270000 kPa•L = 150 kPa•V2

Divide both sides by 150 kPa

270000 kPa•L/150 kPa = 150 kPa•V2/150 kPa

1800L = V2

Thus, the new volume of the gas is 1800 liters.

8 0
3 years ago
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