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2 years ago

Number the steps for balancing equations:

1 answer:

8 0

Step 1: The Unbalanced Chemical Equation. The unbalanced chemical equation is given to you. ...
Step 2: Make a List. ...
Step 3: Identifying the Atoms in Each Element. ...
Step 4: Multiplying the Number of Atoms. ...
Step 5: Placing Coefficients in Front of Molecules. ...
Step 6: Check Equation. ...
Step 7: Balanced Chemical Equation.

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The nursing department of a college surveyed two hundred graduates from their programs about their current

Fittoniya [83]

Answer:

8/9

Step-by-step explanation:

7 0

3 years ago

Using Newton's Law of Cooling. You are a medical examiner called to an abandoned house in which a dead body has been discovered.

Artyom0805 [142]

A) The differential equation comes from the fact that the rate of temperature change is proportional to the difference in temperatures.
$\frac{dT}{dt} = \alpha(T -52)$

B) Find general solution by separating variables and integrating $\int\frac{dT}{T-52} = \alpha \int dt \\ ln (T-52) = \alpha t + C \\ T = C e^{\alpha t} +52$ :

C) Initial condition is t=0, T = 87
$87 = C +52 \\ C = 35$

D) Total time elapsed is 10 minutes, new temperature is 84
$84 = 35 e^{10\alpha} +52$
solve for alpha
$e^{10\alpha} =\frac{32}{35} \\ \alpha = \frac{ln(32/35)}{10} \\ \alpha = -.00896$

E) Temperature function is:
$T = 35 e^{-.00896 t} +52$
solving for t
$t = \frac{ln (\frac{T-52}{35})}{-.00896}$
Plug in T = 98.6
$t = -31.95$

This is approximately 32 minutes before he arrived or about 1:20 AM

3 0

2 years ago

Please Answer all if you do I give brainly

Lera25 [3.4K]

Answer:

Squares:

1 is 12.4in

6.2 x 6.2 = 12.4

2 is 21 in

5 1/2 x 4 = 21

Triangles:

1 is 48 in

16+16+16=48

2 is 21 in

$A = \frac{h\x_{b} }{2} = \frac{7 * 6}{2} = 21$

hoped that helped:P

Step-by-step explanation:

4 0

2 years ago

Select all the sets of numbers that are possible values for x in the inequality, x<-3.

Solnce55 [7]

Answer: 2 and 3

Step-by-step explanation:

all (-9,-7,-5) and (-33,-22,-11) are negative numbers less than -3. So those answers are possible answers. ps i had this question on my test too.

6 0

3 years ago

10 more than a number c is 3, I need help on how to find the equation.

MA_775_DIABLO [31]

Answer:

equation: c + 10 = 3

Step-by-step explanation:

since 10 more = +10

c + 10 = 3

6 0

2 years ago