All categories

3 years ago

I NEED HELP!! ASAP Hdhshdhnajxhdbsbxhxhbdbsbxucfbsnzncjdjdjnddjjsusux

Chemistry

2 answers:

emmasim [6.3K]3 years ago

7 0

Answer:

Tectonic plates glide over the surface of Earth's mantle, and therefore changing the location of land over time. The fossils in the picture were originally together as the same area. However, over time, Earth's plates shifted over the mantle to separate these into two locations.

Serjik [45]3 years ago

5 0

Answer:They aren’t found in Africa

Explanation:

You might be interested in

if 9.0 grams of water contains 1.0 grams of hydrogen what mass of oxygen is contained in 36 grams of water?

elena-14-01-66 [18.8K]

9 gram of water contains 1 g of hydrogen and 8 grams of Oxygen

$\\ \sf\longmapsto \dfrac{8}{9}=\dfrac{x}{36}$

$\\ \sf\longmapsto 9x=36(8)$

$\\ \sf\longmapsto x=\dfrac{36(8)}{9}$

$\\ \sf\longmapsto x=4(8)=32$

36g of water contains 32g of oxygen

7 0

3 years ago

Which is the least likely result of selective breeding

MAXImum [283]

Correct answer is C.
But this is a biology question.

6 0

3 years ago

Which substance increases in solubility as the temperature decreases?

Arlecino [84]

NH₃ would. This is because of the fact that ammonia is a molecular gas while the other options are ionic crystals. Crystals increase in solubility when the temperature increases while gases increase in solubility while temperatures deceases.

I hope this helps. Let me know in the comments if anything is unclear or if you want me to explain anything is more detail.

7 0

3 years ago

Read 2 more answers

Cells come from the reproduction of

levacccp [35]

They come from the reproduction of existing cells

8 0

4 years ago

You want to make 500 ml of a 1 N solution of sulfuric acid (H2SO4, MW: 98.1). How many grams of sulfuric acid do you need?

umka21 [38]

Answer:

24.525 g of sulfuric acid.

Explanation:

Hello,

Normality (units of eq/L) is defined as:

$N=\frac{eq_{solute}}{V_{solution}}$

Since the sulfuric acid is the solute, and we already have the volume of the solution (500 mL) but we need it in liters (0.5 L, just divide into 1000), the equivalent grams of solute are given by:

$eq_{solute}=N*V_{solution}=1\frac{eq}{L}*0.5L=0.5 eq$

Now, since the sulfuric acid is diprotic (2 hydrogen atoms in its formula) 1 mole of sulfuric acid has 2 equivalent grams of sulfuric acid, so the mole-mass relationship is developed to find its required mass as follows:

$m_{H_2SO_4}=0.5eqH_2SO_4(\frac{1molH_2SO_4}{2 eqH_2SO_4}) (\frac{98.1 g H_2SO_4}{1 mol H_2SO_4} )\\m_{H_2SO_4}=24.525 g H_2SO_4$

Best regards.

4 0

4 years ago