Question

16 formula 1 punto convert 267.4 kpa to atm. (1 atm = 101 kpa) round to 1 decimal place. respuesta 17 elección múltiple 1 punto which of these is an compound? oxygen salt salt water oil and water 18 elección múltiple 1 punto which of these settles into layers? colloid solution suspension element 19 elección múltiple 1 punto which of these contains only 1 type of molecule? element homogeneous mixture compound heterogeneous mixture

Explanation:

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Step1: Set up conversion formula

We know that $1\ atm = 101\ kPa$. To convert $267.4\ kPa$ to atm, we use the formula $atm=\frac{kPa}{101}$.

Step2: Substitute and calculate

$atm=\frac{267.4}{101}\approx 2.6$

An element is made of one - type of atom, a compound is made of two or more different types of elements chemically bonded. Oxygen is an element. Salt water and oil - water are mixtures. Salt (sodium chloride, $NaCl$) is a compound made of sodium and chlorine.

A colloid does not settle out. A solution is a homogeneous mixture and does not settle. An element is a pure substance and does not settle into layers. A suspension is a heterogeneous mixture in which the particles settle out over time.

Answer:

$2.6$

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