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Flauer [41]
3 years ago
15

Heat never travels from a cooler object to a warmer object.

Chemistry
1 answer:
prohojiy [21]3 years ago
4 0

Answer:

I would say False.

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Given the chemical equation: KI +Pb(NO3)2—>KNO3 + Pbl2
Andrew [12]

Answer:

2KI +Pb(NO_3)_2\rightarrow 2KNO_3 + Pbl_2

Double replacement reaction.

It is in agreement with the law of conservation of mass because we have two potassium atoms, two iodine atoms, one lead atom, two nitrogen atoms and six oxygen atoms on both sides of the chemical equation (count them).

Explanation:

Hello there!

In this case, according to the given information, it turns possible for us to solve this problem by firstly considering that this reaction occurs between potassium iodide and lead (II) nitrate to yield potassium nitrate and lead (II) iodide which is clearly not balanced since we have one iodine atom on the reactants and two on the products, that is why the balance implies the placement of a coefficient of 2 in front of both KI and KNO3 as shown below:

2KI +Pb(NO_3)_2\rightarrow 2KNO_3 + Pbl_2

Thus, we infer this is a double replacement reaction due to the exchange of both cations, K and Pb with both anions, I and NO3. Moreover, we can tell this balanced reaction is in agreement with the law of conservation of mass because we have two potassium atoms, two iodine atoms, one lead atom, two nitrogen atoms and six oxygen atoms on both sides of the chemical equation (count them).

Regards!

7 0
3 years ago
Which effect are most likely from a hurricane? Check all that apply
const2013 [10]

The correct answers are option - A , B, D and E

Damaged homes due to flooding  

Uprooted trees due to high winds

Eroded coastline due to storm surge  

Damaged personal property due to hail

Reason -

A hurricane when strikes a coastal area causes serious hazards such as heavy rains, high winds, a storm surge, and even tornadoes. A storm surge pushes the sea water on the shore and thus causes flooding near the coast. However heavy rains cause flooding in inland areas. High winds, storm surge, flooding and tornadoes causes damaging of house, personal property and car.

5 0
4 years ago
Consider the reaction of ethyl acetate with sodium hydroxide: CH3COOC2H5(aq)+NaOH(aq)⇌CH3COONa(aq)+C2H5OH(aq) The reaction is fi
Alexus [3.1K]

Answer: The rate law is rate=k[CH_3COOC_2H_5]^1[NaOH]^1

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.

For the given reaction:

CH_3COOC_2H_5(aq)+NaOH(aq)\rightleftharpoons CH_3COONa(aq)+C_2H_5OH(aq)

k= rate constant

Rate law: rate=k[CH_3COOC_2H_5]^x[NaOH]^y

For the given rate law:

y =1 =  order with respect to NaOH

n = total order = 2

2= (x+y)

2= (x+1)

x= 1

Thus order with respect to CH_3COOC_2H_5 is 1 and rate law is : rate=k[CH_3COOC_2H_5]^1[NaOH]^1

6 0
3 years ago
Which step of mitosis involves the nucleus splitting and nuclear membranes forming around each new nucleus?
guapka [62]
“telophase” because it’s the only step that actually involves the cell to physically split, and it also involves the forming of a nuclear membrane

Hope this helps :)
6 0
3 years ago
Read 2 more answers
PLEASE PEOPLE I NEED HELP IN THIS PLEASEE ! !!! :,C
olganol [36]

Answer:

The last one is first, the first one is second, and the second one is third.

Explanation:

4 0
3 years ago
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