How Africa's bedrock can have glacier scratches

1 answer:

ivann1987 [24]3 years ago

3 0

Means that the African continent was once in the higher latitudes, and in contact with Antarctica, where glaciers form due to the low temperatures in the poles. The continent drifted over time due to tectonic plate movement. Continental drift is powered by the convection current in the mantle of the earth.

You might be interested in

What is the term for the limited recyclable life of certain materials? o single-stream recycling o closed-loop recycling O dual-

Orlov [11]

Answer:

There are three main types of recycling: primary, secondary, and tertiary.Single-stream recycling is a system in which all recyclables, including newspaper, cardboard, plastic, aluminum, junk mail, etc., are placed in a single bin or cart for recycling. ... While collections costs are lower with a single stream system, processing costs are much higher.

Explanation:

Hope it helps u

FOLLOW MY ACCOUNT PLS PLS

4 0

3 years ago

PLSS HELP I'm really stuck!

ss7ja [257]

Answer:

The steps are explained below, the essential step is to find mass here, 120 g of NaOH.

Explanation:

In order to answer this question, we need to define molarity conceptually firstly to see what variables we need. According to the formula, molarity is equal to the ratio between moles and volume, while moles itself is a ratio between mass and molar mass. This means we have a formula for molarity involving mass, molar mass and volume:

$c = \frac{n}{V} = \frac{m}{MV}$

In order to prepare a 500.0 mL of stock solution of 6.0 M of NaOH, we then need to find the mass of NaOH dissolved in this solution using the equation above:

$m = cMV = 6.0 M\cdot 39.997 g/mol\cdot 0.5000 L = 120 g$

Now, since we have the mass of NaOH, we can describe the steps needed to prepare this solution:

measure 120 grams of solid NaOH;
add this mass of NaOH into a 500.0-mL Erlenmeyer flask;
fill approximately half of the flask with distilled water and stir gently to make sure that NaOH dissolves, if it doesn't, add more water and repeat the process;
when NaOH fully dissolves, fill the flask to the mark.

Our solution is prepared.

6 0

4 years ago

How many moles of sodium carbonate in 18.06x10 to the power 22

igor_vitrenko [27]

Answer:

$moles = \frac{ number \: of \: particles}{6.02 \times {10}^{23} }$