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3 years ago

3 why does soldium produce blue colour when dissolve in ammonia?

1 answer:

6 0

Keith may need some help from his manager. A customer is on the phone and she is really angry. She is threatening to post nasty comments on her blog. What should Keith say to his manager? O a) "She's angry. You deal with it." b) "So she's really angry. Her product never arrived. I think we should offer to send her a replacement product free of charge, but wanted your input." "So l'll tell her to calm down. I think she's overreacting. I doubt she'll post c) anything online." "She's really angry; she ordered the product last Wednesday, Don in customer d) service said it would arrive a week later. It was a dollhouse for her niece, Can you take it from here?"

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True or false: Atoms and mass are conserved in nature<br> True<br> False

katovenus [111]

Answer:

It’s true

Explanation:

If we account for all reactants and products in a chemical reaction, the total mass will be the same at any point in time in any closed system. ... The Law of Conservation of Mass holds true because naturally occurring elements are very stable at the conditions found on the surface of the Earth.

5 0

3 years ago

Olympic athletes have lower resting heart rates because

Burka [1]

<span>they exercise regularly, which improves the efficiency of their heart.

Hope this helps!

-Payshence xoxo</span>

3 0

4 years ago

5.) A spring with a spring constant of 500 n/m is stretched 1 meter in

Ymorist [56]

Answer:

250J

Explanation:

Given parameters:

Spring constant = 500N/m

Extension = 1m

Unknown:

Elastic potential energy = ?

Solution:

The elastic potential energy of a body is the energy stored within an elastic string.

EPE = $\frac{1}{2}$ k e²

k is the spring constant

e is the extension

Now;

EPE = $\frac{1}{2}$ x 500 x 1² = 250J

4 0

3 years ago

Which has a slightly greater mass in a nuclear reaction, the reactants or the products? why?

Shtirlitz [24]

<span>The reactants have a slightly greater mass. In a nuclear reaction, a small amount of mass is converted to energy according to the equation E = mc2. The difference in mass is referred to as the mass defect.</span>

6 0

3 years ago

How many moles of CO2 are there in 8.91 x 1023 molecules of CO2?<br> (1 mole= 6.02 x 1023)

Karo-lina-s [1.5K]

Answer:

<h2>1.48 moles</h2>

Explanation:

To find the number of moles in a substance given it's number of entities we use the formula

$n = \frac{N}{L} \\$

where n is the number of moles

N is the number of entities

L is the Avogadro's constant which is

6.02 × 10²³ entities

From the question we have

$n = \frac{8.91 \times {10}^{23} }{6.02 \times {10}^{23} } = \frac{8.91}{6.02} \\ = 1.480066...$

We have the final answer as

<h3>1.48 moles</h3>

Hope this helps you

6 0

3 years ago

3 why does soldium produce blue colour when dissolve in ammonia?​

3 why does soldium produce blue colour when dissolve in ammonia?