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3 years ago

15

How do the different spheres of earth interact?

1 answer:

Vikki [24]3 years ago

5 0

South Pole and north Pole . it's about megnetic field different spheres of earth interact

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(3 pt) The cost of a space mission is roughly $60 million. What type of obstacle to space exploration does this represent? A. fu

erastova [34]

Im pretty sure its A funding because thats alot of money

7 0

3 years ago

Read 2 more answers

The rate of disappearance of HBr in the gas phase reaction2HBr(g) → H2(g) + Br2(g)is 0.301 M s-1 at 150°C. The rate of appearanc

jok3333 [9.3K]

Answer: 0.151

Explanation:

Rate law says that rate of a reaction is directly proportional to the concentration of the reactants each raised to a stoichiometric coefficient determined experimentally called as order.

$2HBr(g)\rightarrow H_2(g)+Br_2(g$

The rate in terms of reactants is given as negative as the concentration of reactants is decreasing with time whereas the rate in terms of products is given as positive as the concentration of products is increasing with time.

$Rate=-\frac{1d[HBr]}{2dt}=+\frac{1d[H_2]}{2dt}=+\frac{1d[Br_2]}{dt}$

Given: $-\frac{d[HBr]}{dt}]=0.301$

Putting in the values we get:

$\frac{0.301}{2}=+\frac{1d[Br_2]}{dt}$

$+\frac{1d[Br_2]}{dt}=0.151$

Thus the rate of appearance of $Br_2$ is 0.151

8 0

3 years ago

Which statement best summarizes what happens during cellular respiration?

morpeh [17]

Answer:

A

Explanation:

B and D have to do with plants

and C has nothing to do with cellular resporation.

8 0

2 years ago

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When potassium metal is added to water, a violent reaction occurs that releases a tremendous amount of light and thermal energy.

Thepotemich [5.8K]

Answer:

An Exothermic reaction.

Explanation:

An exothermic reaction produces heat, while endothermic reactions absorb heat

5 0

2 years ago

The density of ethanol is 0.789 g/mL. If you need 460.0 g of ethanol for an experiment, how many milliliters would you measure o

4vir4ik [10]

Answer:

The volume is 583.02 mL

Explanation:

Given that the density is:-

$\rho=0.789\ g/mL$

The mass, $m=460.0\ g$

The expression for the calculation of density is shown below as:-

$\rho=\frac{m}{V}$

Using the above expression to calculate the volume as:-

$V=\frac{m}{\rho}$

Applying the values to calculate the volume as:-

$V=\frac{460.0\ g}{0.789\ g/mL}=583.02\ mL$

<u>The volume is 583.02 mL.</u>

3 0

3 years ago