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cricket20 [7]
3 years ago
10

Rank the four gases (air, exhaled air, gas produced from the decomposition of H2O2, gas from decomposition of NaHCO3) in order o

f decreasing concentration of CO2.
~
I need to know how to physically find the percentages of CO2 in H2O2 & NaHCO3
Chemistry
1 answer:
Komok [63]3 years ago
6 0
Astronomers use chemical signatures to determine<span> the age and .... </span>Gas<span> mixtures that contain more than </span>4<span>% hydrogen in </span>air<span> are potentially explosive. ... water vapor, </span>carbon dioxide<span>, and several other </span><span>gases</span>
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Which are components of cell theory? Check all that apply.
STatiana [176]

Answer:

All living things are made up of cells.

cells are the basic unit of structure and function of ll living things.

All cells are come from other cells.

Explanation:

The cell theory is historic scientific theory and is universally accepted. This theory was given by Robert Hook in 1665. According to this theory all living things are made up cells.

Cell:

Cell is the smallest unit of life and it is building block of life.

This theory consist of following points:

All living things are made up of cells.

Cells are the basic unit of structure and function of ll living things.

All cells are come from other cells. Which means that cells are originated from pre-existing cells.

The other given options:

Cells comes from nonliving matter.

Cells make up most organisms bu not all.

These are two are not the postulate of cell theory because all living organisms are made of cells.

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Calculate the density of argon gas at a pressure of 753 mmHg and a temperature of 35 °C
ycow [4]
PV=nRT
PV= (m/M)RT
PM=(m/v)RT
PM =dRT
d= (PM) ÷(RT)

substitute the the given data to the above equation. d-density, p-pressure, M- molar mass of argon gas, T- temperature. and R is a constant. make sure to substitute its value too.. :)
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A compound held together by ionic bonds is called a ___?
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A compound held together by ionic bonds is called a salt
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