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ICE Princess25 [194]
3 years ago
14

Blance: Mg + HNO2 → Mg(NO2)2 + H2

Chemistry
2 answers:
Salsk061 [2.6K]3 years ago
8 0

Explanation:

Mg + <u>2</u>HNO2 → Mg(NO2)2 + H2

lbvjy [14]3 years ago
3 0

Answer:

Mg + 2HNO2 → Mg(NO2)2 + H2

Explanation:

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The temperature of a sample of water from the faucet increases from 22.7°C to 48.9°C when 3,710J are applied through electric sh
MakcuM [25]

Answer:

33.8.

Explanation:

Hello,

In this case, since the used equation is:

Q=mCp(T_2-T_1)

Whereas the specific heat is 4.184 J/(g°C), we compute the mass as follows:

m=\frac{Q}{Cp(T_2-T_1)}

Thus, the mass turns out:

m=\frac{3,710J}{4.184\frac{J}{g\°C} (48.9-22.7)\°C}\\\\m=33.8g

And without units:

33.8.

Best regards.

8 0
3 years ago
A net force of 66 newtons accelerates a child at 2.0 m/s? down a smooth playground slide. What is the mass of the
RideAnS [48]

Answer:

I think it’s 130 kg

Explanation:

6 0
3 years ago
Read 2 more answers
A sample of gas has a mass of 0.0707 grams and has a volume of 48.9 milliliters. What is the density of this gas?
GREYUIT [131]

The density of the gas is 1.45 g/L.

The mass of the gas is 0.0707 g.

The volume of the gas is 48.9 mL.

Density = mass/volume = 0.0707 g/48.9 mL = 1.45 × 10⁻³ g/mL = 1.45 g/L

3 0
3 years ago
Why do we think mercury has so many tremendous cliffs?
wlad13 [49]

Answer:

it is sticky

Explanation:

hope it helps

4 0
3 years ago
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NH3 (g) + HCl (g) + NH4Cl (s)<br> What type of reaction does this equation represent?
kogti [31]

Answer:

Synthesis

Explanation:

Reaction Given:

        NH₃+ HCI ------> NH₄Cl

Type of reaction = ?

Solution:

Look at the reactants and products of the reaction to know the type of reaction

          NH₃+ HCI ------> NH₄Cl

In this reaction two reactant combine and give 1 products.

Reactant of the reaction

NH₃ = Ammonia

HCl = Hydrochloric acid

Product of the reaction

NH₄Cl = Ammonium chloride

So,

That ammonia (NH₃) react with Hydrochloric acid (HCl) and produces salt.

in this reaction NH₃ is a week base and take a proton from HCl and form ammonium ion and Cl ion. these two ions in combine form gives a salt called ammonium chloride.  

Type of Reaction:

This is type of synthesis reaction, in which NH₃ and HCl combine and form a new compound that is ammonium chloride salt (NH₄Cl). As the synthesis reaction is that reaction in which two are more compounds or molecules combine and form a new compound.

6 0
3 years ago
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