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Ronch [10]
3 years ago
10

I need help with this asap

Chemistry
2 answers:
stealth61 [152]3 years ago
5 0

Answer:

Are less reactive

Explanation:

Alkaline-earth metals are to the right of alkali metals.

UkoKoshka [18]3 years ago
3 0

Answer:

the answer is "are more reactive"

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2Na + Cl2 → 2NaCI<br> How many grams of NaCl will be produced from 33.0 g of Na and 34.0 g of Cl.?
Mademuasel [1]

54.936 grams of NaCl will be produced from 33.0 g of Na and 34.0 g of Cl.

Explanation:

Data given:

mass of Na = 33 grams

mass of Cl_{2} = 24 grams

atomic mass of Na = 23 grams/moles

atomic mass of Cl = 70 grams/mole

mass of NaCl formed =?

atomic mass of NaCl = 58.44 gram/mole

balanced chemical reaction:

2Na + Cl_{2} ⇒ 2NaCl

number of moles = \frac{mass}{atomic mass}

putting the values in the equation:

number of moles of Na = \frac{23}{33}

                                     = 0.69 moles

number of moles of chlorine gas = \frac{34}{71}

                                                        = 0.47 moles

limiting reagent is chlorine gas in the reaction

from the balanced chemical reaction:

1 mole of chlorine gas reacts to form 2 moles of NaCl

then 0.47 moles of chlorine gas will form x moles

\frac{2}{1} = \frac{x}{0.47}

x = 0.94 moles of NaCl is formed.

mass = atomic mass x number of moles

mass = 58.44 x 0.94

         = 54.936 grams of NaCl is produced.

4 0
3 years ago
If the point of the nail can be approximated as a circle with
maw [93]

Answer:

P = 795.77 Mpa

Explanation:

Given that,

Force exerted by the hammer, F = 10⁴ N

The nail can be considered as a circle with radius of 2\times 10^{-3}\ m

We need to find the pressure exerted on the wall. Pressure is equal to force acting per unit area. So

P=\dfrac{F}{A}\\\\P=\dfrac{10^4\ N}{\pi \times (2\times 10^{-3})^2}\\\\P=795774715.45\ Pa

We know that, 1 MPa = 1000000 Pa

So, P = 795.77 Mpa

So, the pressure exerted on the wall is 795.77 Mpa.

7 0
3 years ago
CAN ANYONE ELP ME WITH CHEMISTRY PLEASE?? I will be asking multiple questions but even if you can only answer one-- I will still
vlabodo [156]
3, 9, 16 are correct! 17 should be b because buffered means that it resists change in pH
6 0
4 years ago
Which of the following is the energy of moving electrons?
mezya [45]

Answer:

Electrical energy

Explanation:

Electrical energy is caused by the moving of electrons.

hope it helps!

6 0
3 years ago
Which of the following is a characteristic of a strong base
Sergeu [11.5K]
It contribus OH-ions
6 0
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